I've been working on a project to live stream audio to a computer from a watch-sized wrist wearable. I'm looking for OTS parts to build a POC.
Product needs to be worn on the wrist (I'll 3D print a casing with a strap). I need it to be as small as possible.
Functionality:
- Receive sound from 3 wired in microphones
- Receive command from customer SW on computer to start receiving audio from microphones
- Continuously transmit sound via Bluetooth to a computer
- Receive command to stop receiving audio from microphones
- Able to be powered via battery
To date, I've evaluated the Adruino Pro Mini, but realized that the sampling rate is only 10kHz, which isn't ideal for high quality audio.
So, I've recently switched to a Teensy board, which has a sampling rate of 44kHz.
HW:
- Microphone module with MAX9814 amplifier
- TP4056 for battery charging/management
- LiPo battery (as the project demands, I cannot have it continuously plugged in via USB to operate
- HM-10 Bluetooth module
- Simple LEDs for notifying when commands are initiated and complete
Does anyone have any other recommendations for me? A reference article I can reference to make it functional?
Thanks for your help!
