Custom PCB using multiple ESP32 devices
Posted: Thu Oct 29, 2020 1:10 am
I am interested in building a board with more interfaces than a single ESP32 can accommodate. I could get there with several fanout devices but that approach seems too complex and difficult to code around. An alternative would be placing two or more ESP32 devices on the same board and using SPI or some wired interface to communicate between them. I have seen references to ESP_NOW to have multiple devices communicating over Wi-Fi, but I prefer a wired interface because I fear motor bridge driver noise sources in my application may make those connections occasionally unreliable. What is recommended for such applications? Do software drivers exist for multiple ESP32 instantiations exclusive of ESP_NOW and Wi-Fi?