Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 3 of 3

Thread: Can I use two I2S mems mics (Adafruit SPH0645) with Teensy 3.2 with audio shield

  1. #1
    Junior Member
    Join Date
    Mar 2019
    Posts
    2

    Can I use two I2S mems mics (Adafruit SPH0645) with Teensy 3.2 with audio shield

    I am trying to use two adafruit SPH0645 mems mics with I2S interface on the teensy 3.2 for stero sound. I cannot find any information on how to do this. Is it possible to do this? If not is there a different mems mic or teensy board that will allow for two I2S inputs? If so please point my in the right direction.

    Thanks,
    JimmyT.

  2. #2
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    19,532
    Is it this one?

    https://www.adafruit.com/product/3421

    My understanding (not from actual use) is you're supposed to wire the SEL pin to GND on one mic and to 3.3V on the other mic. Then you just connect power and the 3 I2S signals.

    Have you tried asking on Adafruit's forum? If so, please post a link here to whatever answer they give, and a link there to this thread... so anyone else who finds this can access the answers. I'm also kinda curious how the Adafruit folks will answer (if they have an answer....)

    If things don't work out and you need more help, please show us photos of how you actually connected all the wires.

  3. #3
    Junior Member
    Join Date
    Mar 2019
    Posts
    2

    Dual I2S problem solved

    Hey Paul,

    I found the problem, a jumper I was using was defective. Cheap parts from China bought on Amazon. Spent hours on this due to Chinese junk. I did as Adafruit specified, pulled the select pin up on one channel and grounded the other. The other I2S connections were as specified in your documentation. Everything is working now.

    Cheers,
    JimmyT.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •