As Predtech4 shares, he finally managed to get the SD card to work on our prototype. As a result, almost all important parts of our first prototype have been tested: we now have a fully functional audio system, established interaction between UI and Audio microcontrollers, display output is functioning, and our GUI, created with TouchGFX, works seamlessly. From the shortcomings, RATelectro made a poorly performing power supply unit that overheats and needs to be revised. Additionally, we haven't yet finalized the battery scheme and charging.
Currently, we are preparing to create a prototype that resembles a pedal more closely. This prototype will be enclosed in a casing to retest our electronics and their layout within this casing. It will also have the appearance of a more or less finished device that can be handed to someone for testing and feedback.
For now, we've decided to divide our electronics into the following boards:
Audio connectors board:
FootSW & additional display board: