Uploaded April 2021 | Updated September 2026, 1 week ago
We've made a Walkie-Talkie using the ESP32. Audio data is transmitted over either UDP broadcast or ESP-NOW. So the Walkie-Talkie will even work without a WiFi network!
The custom PCBs I've had made up were manufactured by PCBWay and as always they've done a really great job. You can order the boards directly from PCBWay here: pcbway.com/project/shareproject/ESP32_Audio_Board_For_Walkie_Talkie_v2.html
And you can help support the channel by using my referral link: pcbway.com/setinvite.aspx?inviteid=403566 for other PCBs.
If you like ESP32 audio videos - I've got a complete set on this playlist: youtube.com/playlist?list=PL5vDt5AALlRfGVUv2x7riDMIOX34udtKD
I'm using my own microphone board (available on Tindie: tindie.com/products/21519/) but the code will work equally well with any I2S microphone (e.g. the INMP441) and you can easily modify it to use the built-in ADC for analogue microphones.
For output, I'm using an I2S amplifier breakout board which I'm using the drive a 4ohm speaker. Once again, you can modify the code to use the built-in DAC for output which will let you use headphones or an analogue amplifier board.
As always, the code is on GitHub: github.com/atomic14/esp32-walkie-talkie
I've got a great series of videos on ESP32 Audio which are a great resource for anyone who wants to learn more about audio on the ESP32 which you can find here: youtube.com/playlist?list=PL5vDt5AALlRfGVUv2x7riDMIOX34udtKD
For this project I've 3D printed a case - you can access the Fusion 360 project here: a360.co/2PXgAUS
You can access the PCB schematic here: easyeda.com/chris_9044/esp32-walkie-talkie
Thanks for watching - there are more videos coming - so don't forget to subscribe :)
Components:
TinyPico: amzn.to/3e525YR
Microphone: tindie.com/products/21519 or amzn.to/3e2oIgy
Amplifier: amzn.to/3xC0yRF
Speakers: amzn.to/3xzRkp2
----
Patreon: patreon.com/atomic14
ko-fi: ko-fi.com/atomic14
We've made a Walkie-Talkie using the ESP32. Audio data is transmitted over either UDP broadcast or ESP-NOW. So the Walkie-Talkie will even work without a WiFi network!
The custom PCBs I've had made up were manufactured by PCBWay and as always they've done a really great job. You can order the boards directly from PCBWay here: pcbway.com/project/shareproject/ESP32_Audio_Board_For_Walkie_Talkie_v2.html
And you can help support the channel by using my referral link: pcbway.com/setinvite.aspx?inviteid=403566 for other PCBs.
If you like ESP32 audio videos - I've got a complete set on this playlist: youtube.com/playlist?list=PL5vDt5AALlRfGVUv2x7riDMIOX34udtKD
I'm using my own microphone board (available on Tindie: tindie.com/products/21519/) but the code will work equally well with any I2S microphone (e.g. the INMP441) and you can easily modify it to use the built-in ADC for analogue microphones.
For output, I'm using an I2S amplifier breakout board which I'm using the drive a 4ohm speaker. Once again, you can modify the code to use the built-in DAC for output which will let you use headphones or an analogue amplifier board.
As always, the code is on GitHub: github.com/atomic14/esp32-walkie-talkie
I've got a great series of videos on ESP32 Audio which are a great resource for anyone who wants to learn more about audio on the ESP32 which you can find here: youtube.com/playlist?list=PL5vDt5AALlRfGVUv2x7riDMIOX34udtKD
For this project I've 3D printed a case - you can access the Fusion 360 project here: a360.co/2PXgAUS
You can access the PCB schematic here: easyeda.com/chris_9044/esp32-walkie-talkie
Thanks for watching - there are more videos coming - so don't forget to subscribe :)
Components:
TinyPico: amzn.to/3e525YR
Microphone: tindie.com/products/21519 or amzn.to/3e2oIgy
Amplifier: amzn.to/3xC0yRF
Speakers: amzn.to/3xzRkp2
----
Patreon: patreon.com/atomic14
ko-fi: ko-fi.com/atomic14
