Uploaded May 2021 | Updated September 2026, 1 week ago
For the walky-talky project (youtu.be/d_h38X4_eQQ), I made a custom PCB in EasyEDA to hold the ESP32 dev board, the I2S Amplifier and the I2S Microphone. It worked really well, but there were a few shortcomings. In this video, we rectify those issues.
Thanks to PCBWay for sponsoring this video, PCBWay offer PCB Production, CNC and 3D Printing, PCB Assembly and much much more. You can find their details here: PCBWay.com/?from=atomic
There were a number of shortcomings to my original design.
* I didn't expose any of the spare GPIO pins - so wiring anything else into the board was a bit of a pain
* I should have shared the I2S pins between the amplifier and microphone saving a few GPIO pins
* I didn't wire up the shutdown pin on the amplifier so there was no way to put it into low power mode
Hopefully, this new version fixes all these issues and is now "perfect"...
----
Patreon: patreon.com/atomic14
ko-fi: ko-fi.com/atomic14
For the walky-talky project (youtu.be/d_h38X4_eQQ), I made a custom PCB in EasyEDA to hold the ESP32 dev board, the I2S Amplifier and the I2S Microphone. It worked really well, but there were a few shortcomings. In this video, we rectify those issues.
Thanks to PCBWay for sponsoring this video, PCBWay offer PCB Production, CNC and 3D Printing, PCB Assembly and much much more. You can find their details here: PCBWay.com/?from=atomic
There were a number of shortcomings to my original design.
* I didn't expose any of the spare GPIO pins - so wiring anything else into the board was a bit of a pain
* I should have shared the I2S pins between the amplifier and microphone saving a few GPIO pins
* I didn't wire up the shutdown pin on the amplifier so there was no way to put it into low power mode
Hopefully, this new version fixes all these issues and is now "perfect"...
----
Patreon: patreon.com/atomic14
ko-fi: ko-fi.com/atomic14
