This project worked flawlessly on the developer kit so I moved forward and created my own board. This schematic is inspired by the design made by Espressif: ESP32-s3 Dev Kit Schematics https://dl.espressif.com/dl/SCH_ESP32-S ... 10312C.pdf
The flashing works perfectly. I am able to use different code that uses the microphone and record sounds. No issues with programming whatsoever. But when I upload the same code that uses TFLITE (the first provided link), the code uploads, runs, and prints outputs, but the neural network does not process or output anything.
**Please note** that there are no differences between the code uploaded to my board and the one uploaded to the dev kit (on which everything works as it should).
There are only small differences between the two boards, but everything else (code-wise) works on my board so I am not sure what hardware issue would affect only the neural network.
The ESP32-s3 used in my design is the same one as the one on the dev kit, the only difference is the 16MB Flash in my design and 8MB Flash in the ESP32-s3 dev kit design (smaller flash memory on the board that works with the nn, compared to larger flash on the board that doesn't work with the nn).
-> Could it be a memory problem caused by an incorrectly used capacitor that could create small differences in the voltage that powers the memory?
My schematics design is attached below
- ESP32-s3 my PCB design for the voice recognition module
- 2022-06-27 104239.png (305.09 KiB) Viewed 4385 times