{"id":11679,"date":"2023-10-30T18:32:11","date_gmt":"2023-10-30T16:32:11","guid":{"rendered":"https:\/\/learn.groundstudio.eu\/?p=11679"},"modified":"2024-10-31T09:29:08","modified_gmt":"2024-10-31T07:29:08","slug":"audio-laser-transmission","status":"publish","type":"post","link":"https:\/\/learn.groundstudio.eu\/en\/audio-laser-transmission\/","title":{"rendered":"Audio laser transmission"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Introduction<\/h2>\n\n\n\n<p>With this kit we can transmit audio signals wirelessly from one board to another, only through the light emitted by a laser diode.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">List of tools required for assembly and operation,<br>not included in the kit<\/h2>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Name <\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\"><strong>Image<\/strong><\/th><th class=\"has-text-align-center\" data-align=\"center\">Buy here<\/th><\/tr><\/thead><tbody><tr><td>Soldering iron<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-10927\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/letcon-cu-temperatura-reglabila-907-2.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/letcon-cu-temperatura-reglabila-907-2.jpg 607w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/letcon-cu-temperatura-reglabila-907-2-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/letcon-cu-temperatura-reglabila-907-2-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/letcon-cu-temperatura-reglabila-907-2-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/en\/home\/444-letcon-cu-temperatura-reglabila-907.html','_blank')\" style=\"\">\ud83d\uded2Buy<\/button><\/td><\/tr><tr><td>Solder wire<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-10925\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/fludor-08mm-100g-1.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/fludor-08mm-100g-1.jpg 607w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/fludor-08mm-100g-1-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/fludor-08mm-100g-1-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/fludor-08mm-100g-1-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/en\/home\/458-solder-wire-08mm-100g.html','_blank')\" style=\"\">\ud83d\uded2Buy<\/button><\/td><\/tr><tr><td>Pliers<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-10924\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/clete-pentru-fire-3.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/clete-pentru-fire-3.jpg 607w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/clete-pentru-fire-3-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/clete-pentru-fire-3-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/clete-pentru-fire-3-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/en\/electronics\/260-wire-cutter.html',_blank')\" style=\"\">\ud83d\uded2Buy<\/button><\/td><\/tr><tr><td>Helping hands <br>(device or a friend)<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-12304\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa.jpg 900w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa-768x768.jpg 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/suport-helping-hands-cu-lupa-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/home\/710-suport-helping-hands-cu-lupa.html','_blank')\" style=\"\">\ud83d\uded2Buy<\/button><\/td><\/tr><tr><td>Audio source* <em><br><\/em><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><tr><td><br>9V Power supply**<\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>*<strong> As an audio source, we recommend an inexpensive device, such as this Bluetooth receiver, to be connected to the kit. If the kit is not properly assembled, the audio device can become damaged. Do not use a smartphone wire connected to the kit<\/strong>,<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Bluetooth reveiver <br>+<br>Jack 3.5 cable<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-11629\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti.jpg 900w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti-768x768.jpg 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/receptor-audio-pentru-casti-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/electronics\/462-bluetooth-receiver-for-headsets.html',_blank')\" style=\"\">\ud83d\uded2 Buy<\/button><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">5V USB power supply<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"127\" class=\"wp-image-11631\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-5v-1a.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-5v-1a.jpg 632w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-5v-1a-300x253.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-5v-1a-14x12.jpg 14w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/electronica\/433-sursa-alimentare-5v-1a.html',_blank')\" style=\"\">\ud83d\uded2 Buy<\/button><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><strong>**To power the circuit, you&#8217;ll need a 9V power supply with a DC connector.<br>Here are some suggestions:<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\">Connector for 9V battery<br>+<br>battery<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img decoding=\"async\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/mufa-baterie-9v-conector.jpg\" alt=\"\" style=\"width: 150px;\"><br><strong>+<\/strong><br><img decoding=\"async\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/688e4463-9095-439c-a6f3-f1b7f870aaca.17ab2f9c62b095a509e0d58f079cae3b.webp\" alt=\"\" style=\"width: 150px;\"><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/relectronica\/134-mufa-baterie-9v-conector.html','_blank')\">\ud83d\uded2 Buy<\/button><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">9V power supply<\/td><td class=\"has-text-align-center\" data-align=\"center\"><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" class=\"wp-image-12124\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a.jpg\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a.jpg 900w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a-300x300.jpg 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a-150x150.jpg 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a-768x768.jpg 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/sursa-alimentare-9v-1a-12x12.jpg 12w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><td class=\"has-text-align-center\" data-align=\"center\"><button onclick=\"window.open('https:\/\/ardushop.ro\/electronica\/430-sursa-alimentare-9v-1a.html','_blank')\">\ud83d\uded2 Buy<\/button><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">List of components included in the kit <\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>Qty<\/th><th>Name<\/th><th><strong>Details<\/strong><\/th><th><strong>Footprint<\/strong><\/th><th><strong>Image<\/strong><\/th><\/tr><\/thead><tbody><tr><td>1<\/td><td>Resistor<\/td><td>620K<\/td><td>R1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11810\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png 453w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-300x209.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Resistor<\/td><td>100R<\/td><td>R2<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11810\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png 453w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-300x209.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Resistor<\/td><td>51K<\/td><td>R3<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11810\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R.png 453w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-300x209.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/R-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Laser Diode<\/td><td>red<\/td><td>D2<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"64\" class=\"wp-image-12317\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Laser-diode.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Laser-diode.png 442w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Laser-diode-300x128.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Laser-diode-18x8.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Photodiode<\/td><td><\/td><td>D1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"42\" class=\"wp-image-12686\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Photodiode.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Photodiode.png 552w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Photodiode-300x83.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/Photodiode-18x5.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Electrolytic capacitor<\/td><td>10uF<\/td><td>C2<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"57\" class=\"wp-image-11815\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png 666w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-300x114.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-18x7.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>4<\/td><td>Electrolytic capacitor<\/td><td>100uF<\/td><td>C3, C5, C7, C9<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"57\" class=\"wp-image-11815\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png 666w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-300x114.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-18x7.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Electrolytic capacitor<\/td><td>4.7uF<\/td><td>C10<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"57\" class=\"wp-image-11815\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1.png 666w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-300x114.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/CP-1-18x7.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Ceramic capacitor<\/td><td>220nF<\/td><td>C1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11819\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png 434w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-300x210.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>2<\/td><td>Ceramic capacitor<\/td><td>100nF<\/td><td>C4, C6<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11819\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png 434w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-300x210.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Ceramic capacitor<\/td><td>10nF<\/td><td>C8<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"105\" class=\"wp-image-11819\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C.png 434w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-300x210.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/C-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>2<\/td><td>Transistor<\/td><td>8050<\/td><td>Q1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"103\" class=\"wp-image-11817\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2.png 582w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2-300x205.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2-18x12.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2-392x272.png 392w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Transiztor-TO92-2-130x90.png 130w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>12<\/td><td>LED<\/td><td>red, 5mm<\/td><td>LED1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"71\" class=\"wp-image-11812\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/LED-red.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/LED-red.png 496w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/LED-red-300x143.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/LED-red-18x9.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Integrated circuit<\/td><td>LM386<\/td><td>U1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"133\" class=\"wp-image-11823\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8.png 350w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-300x266.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-14x12.png 14w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Socket<\/td><td>8 pins<\/td><td>U1<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"106\" class=\"wp-image-11822\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-socket.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-socket.png 480w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-socket-300x212.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/DIP-8-socket-18x12.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>2<\/td><td>Power connector<\/td><td>jack barrel, 9V<\/td><td>J1, J3<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"141\" class=\"wp-image-11937\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/jack-barrel.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/jack-barrel.png 431w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/jack-barrel-300x282.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/07\/jack-barrel-13x12.png 13w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Audio connector<\/td><td>jack 3.5<\/td><td>J2<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"114\" class=\"wp-image-12228\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector.png 381w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-300x228.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-16x12.png 16w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Speaker<\/td><td>8ohm<\/td><td><\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"141\" class=\"wp-image-12099\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/speaker.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/speaker.png 523w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/speaker-300x282.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/speaker-13x12.png 13w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>Cable for speaker<\/td><td><\/td><td><\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"34\" class=\"wp-image-12100\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable.png 805w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable-300x69.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable-768x176.png 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable-18x4.png 18w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/2-wire-cable-800x185.png 800w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><tr><td>1<\/td><td>PCB<\/td><td><\/td><td><\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"95\" class=\"wp-image-12319\" style=\"width: 150px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb.png 1346w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb-300x190.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb-1024x648.png 1024w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb-768x486.png 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-audio-laser-pcb-18x12.png 18w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Schematic<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"414\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-1024x414.png\" alt=\"\" class=\"wp-image-11695\" style=\"object-fit:cover\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-1024x414.png 1024w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-300x121.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-768x311.png 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-1536x622.png 1536w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-2048x829.png 2048w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/lase-audio-transmission-sch-5-18x7.png 18w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Operating principle<\/h2>\n\n\n\n<p>The circuit consists of two parts: the transmitter and the receiver. The audio signal source is connected to the transmitter, and the receiver plays the audio signal through a speaker.<\/p>\n\n\n\n<p><strong>Transmitter (TX)<\/strong><br>As input element in the transmitter we have the audio signal (through the J2 jack connector) and a 9V voltage source (the J3 connector). The output is the light generated by the laser diode D2. The audio signal is generally a weak signal with an alternating form (both negative and positive). The role of the NPN bipolar transistor 8050 is to shift the audio signal to a positive voltage so that it can light up the laser diode. Without this offset, the laser diode would not illuminate and would not be able to transmit the signal to the other board.<\/p>\n\n\n\n<p>In the screenshot below, two probes are connected to the oscilloscope:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Yellow for the input audio signal<\/li>\n\n\n\n<li>Purple for the signal on the laser diode It can be observed that the yellow signal is centered around the value of 0V, while the purple signal is shifted by approximately 3V. These 3V represent the voltage needed for the laser diode to illuminate, with varying light intensity, depending on the voltage value in the signal.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"480\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/SDS00002-1.png\" alt=\"\" class=\"wp-image-11738\" style=\"aspect-ratio:1.6666666666666667;width:752px;height:auto\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/SDS00002-1.png 800w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/SDS00002-1-300x180.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/SDS00002-1-768x461.png 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/SDS00002-1-18x12.png 18w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p><strong>Receiver (RX)<\/strong><br>The key components in the receiver are the photodiode, the LM386 audio amplifier, and the speaker. The light signal transmitted by the laser diode is received by the photodiode. When light is applied to the photodiode, it generates electricity (photovoltaic effect). The LM386 amplifier amplifies the voltage generated by the LED, with a significantly higher power supply voltage (9V on pin 1-GAIN) than the voltage generated by the photodiode(in millivolts). The amplified signal is then played through the speaker, making it audible.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Instructions for assembly preparation<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table\"><table><tbody><tr><td>Step 0<\/td><td class=\"has-text-align-left\" data-align=\"left\">Read all the instructions, from beginning to end.<\/td><\/tr><tr><td>Step 0 bis<\/td><td class=\"has-text-align-left\" data-align=\"left\">Reminder: It is very important to read all the instructions.<\/td><\/tr><tr><td>Step 1<\/td><td class=\"has-text-align-left\" data-align=\"left\">Make sure you have all the tools needed to assemble the kit.<\/td><\/tr><tr><td>Step 2<\/td><td class=\"has-text-align-left\" data-align=\"left\">Make sure you have all the components needed to assemble the kit.<\/td><\/tr><tr><td>Step 3<\/td><td class=\"has-text-align-left\" data-align=\"left\">To comply with the warranty conditions*, check\/measure each component separately.<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Assembly instructions<\/h2>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:100%\">\n<figure class=\"wp-block-table\"><table><thead><tr><th>Step<\/th><th class=\"has-text-align-left\" data-align=\"left\">Details<\/th><th>Image<\/th><\/tr><\/thead><tbody><tr><td>Step 1<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the resistors according to the markings on the PCB, regardless of orientation. Make sure you respect the values and markings<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"301\" class=\"wp-image-11766\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-R-1.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-R-1.png 606w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-R-1-300x201.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-R-1-18x12.png 18w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 2<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the ceramic capacitors, regardless of orientation<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"344\" class=\"wp-image-11764\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-C.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-C.png 532w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-C-300x230.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-C-16x12.png 16w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 3<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the electrolytic capacitors, so that the shorter terminal (the negative one, the cathode) corresponds to the hatched area on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"383\" class=\"wp-image-11768\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-CP.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-CP.png 606w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-CP-300x255.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-CP-14x12.png 14w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 4<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the transistor, so that the cut-out marking correspond to the one on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"458\" class=\"wp-image-11779\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Transistor-TO92.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Transistor-TO92.png 395w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Transistor-TO92-295x300.png 295w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Transistor-TO92-12x12.png 12w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 5<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the LED and the photodiode so that the longer terminal (the positive one) corresponds to the \u201c+\u201d sign on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"383\" class=\"wp-image-11770\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-LED.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-LED.png 606w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-LED-300x255.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-LED-14x12.png 14w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 6<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the socket, so that the cut-out marking correspond to the one on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"355\" class=\"wp-image-11777\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Socket.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Socket.png 606w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Socket-300x237.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-Socket-15x12.png 15w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 7<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the power connector according to the marking on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"449\" class=\"wp-image-11781\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Barrel-jack.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Barrel-jack.png 443w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Barrel-jack-300x300.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Barrel-jack-150x150.png 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/Barrel-jack-12x12.png 12w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 8<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the audio connector according to the marking on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"405\" class=\"wp-image-12235\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-pcb.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-pcb.png 369w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-pcb-300x270.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-pcb-13x12.png 13w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 9<\/td><td class=\"has-text-align-left\" data-align=\"left\">Insert the integrated circuit in its socket, so that the cut-out marking correspond to the one on the PCB<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"497\" class=\"wp-image-11786\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-IC-in-socket.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-IC-in-socket.png 440w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-IC-in-socket-272x300.png 272w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/icon-IC-in-socket-11x12.png 11w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 10<\/td><td class=\"has-text-align-left\" data-align=\"left\">Solder the laser diode to the marked pads, blue wire goes to B and red wire goes to R+<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"155\" class=\"wp-image-12320\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/laser-diode-pcb.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/laser-diode-pcb.png 546w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/laser-diode-pcb-300x103.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/laser-diode-pcb-18x6.png 18w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 11<\/td><td class=\"has-text-align-left\" data-align=\"left\">Power the circuit with the chosen power supply<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"247\" class=\"wp-image-12142\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/plug-the-power.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/plug-the-power.png 471w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/plug-the-power-300x165.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/plug-the-power-18x10.png 18w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 12<\/td><td class=\"has-text-align-left\" data-align=\"left\">Link the bluetooth receiver to your smartphone, play your favourite music, and connect the audio cable to the kit<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"157\" class=\"wp-image-12236\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-plugin.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-plugin.png 479w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-plugin-300x105.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/audio-connector-plugin-18x6.png 18w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 13<\/td><td class=\"has-text-align-left\" data-align=\"left\">Direct the laser diode towards the photodiode<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"279\" class=\"wp-image-12325\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2.png 1593w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2-300x186.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2-1024x634.png 1024w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2-768x476.png 768w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2-1536x952.png 1536w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/10\/rx-tx-laser-audio-play2-18x12.png 18w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><tr><td>Step 14<\/td><td class=\"has-text-align-left\" data-align=\"left\">And enjoy your laser transmitted music!<\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"450\" class=\"wp-image-11791\" style=\"width: 450px;\" src=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/5278593.png\" alt=\"\" srcset=\"https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/5278593.png 512w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/5278593-300x300.png 300w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/5278593-150x150.png 150w, https:\/\/learn.groundstudio.eu\/wp-content\/uploads\/2023\/11\/5278593-12x12.png 12w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-alpha-channel-opacity has-background is-style-wide\" style=\"margin-top:var(--wp--preset--spacing--50);margin-bottom:var(--wp--preset--spacing--50);background-color:#129788;color:#129788\"\/>\n\n\n<div data-post-id=\"11906\" class=\"insert-page insert-page-11906 \">\n<h2 class=\"wp-block-heading\">General assembly instructions for Warranty Compliance<\/h2>\n\n\n\n<p>As a precaution and to comply with the warranty conditions, we recommend testing each individual component before assembly. For example, resistors will be measured with an ohmmeter\/multimeter. The warranty is for each individual component, not for the whole assembly. Since assembly is done by unauthorized personnel, under unknown conditions or at unknown stages of completion, we cannot assume any legal liability related to any consequences or operation of devices assembled by any third party.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Transmit audio signals wirelessly from one board to another, only through the light emitted by a laser diode.<\/p>\n","protected":false},"author":2,"featured_media":11690,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[19],"tags":[],"class_list":["post-11679","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diykits"],"_links":{"self":[{"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/posts\/11679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/comments?post=11679"}],"version-history":[{"count":54,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/posts\/11679\/revisions"}],"predecessor-version":[{"id":12691,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/posts\/11679\/revisions\/12691"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/media\/11690"}],"wp:attachment":[{"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/media?parent=11679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/categories?post=11679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learn.groundstudio.eu\/en\/wp-json\/wp\/v2\/tags?post=11679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}