Teensy hearing aid design

In initial hearing aid design using teensy audio board
1] In PRJC store [URL=“https://www.pjrc.com/store/teensy3_audio.html”]https://www.pjrc.com/store/teensy3_audio.html[/URL] in this particular URL a schematic is given. Is that scheamtic of teensy audio board?
Schematic has AP7313, which is a linear regulator. Is this voltage regulator inbuilt or supplied externally?

2]In teensy hearing aid design is a Bluetooth module used? If yes, why and which one?

3] Can we send audio input from phone using Bluetooth to audio board?

4] what are the other ways of sending input to audio board?

Is teensy hearing aid design schematic available?


The Tympan schematic (and other design files) are on GitHub at: https://github.com/Tympan/Tympan_Rev_C_Hardware

The Bluetooth module that is on the Rev C hardware does not support bluetooth audio.

Audio can be input into the Tympan from:

  • its two on-board microphones
  • an external microphone (via the pink microphone jack)
  • an external analog audio source (via line-input to via the pink microphone jack)
  • an external analog audio source (via line-input to the solderable through-holes on the side of the Tympan PCB)
  • from a PC via a USB digital audio connection (this is very experimental)

I hope that this helps.


Thank you for your reply.
Can ESP8266 wifi module be used to input audio data to teensy 3.6?

Can this BLKMDSPK Bluetooth audio receiver board compatible with teesny 3.6? Can wireless transmission of audio happen through this ?


How do I send audio to teensy using phone? Can it be sent over bluetooth or ESP8266 WiFi module?

I am using bread board to connect teensy 3…6 and audio board. How do I solder them? Female and male header pin will allow me to connect teensy 3.6 on top of audio board. But how to connect audio board to bread board? Please help me with this.


I want to rig up circuit mentioned in above blog. Can you tell me the connection between teensy 3.6 and audio board. Is there any schematic for hearing aid design using teensy 3.6 and teensy audio board and not tympan?


That blog post was my fun hack that was a stepping-stone to designing/building the Tympan. Being a home project, the only “schematic” is the illustration that was included in the blog:


If you’re using the Teensy Audio board instead of the Tympan of a Tympan-based design, you’ll find more Teensy Audio Board advice over at the Teensy Audio forum: https://forum.pjrc.com/forums/8-Audio-Projects


Was there a specific reason why you chose Line in inputs instead of Mic in to connect the microphones?