Tutorial on how to make two Raspberry Pi Pico boards communicate with each other through the SPI interface using Central/Peripheral modes and Pico C/C++ SDK.
Debugging RP2040 Pico C/C++ SDK Projects using Raspberry Pi Debug Probe & VS Code
What is Modbus Communication Protocol & How to Implement Modbus RTU with Arduino
Getting Started with Arduino Nano ESP32 Wi-Fi & IoT Development Board
Getting Started with Espressif ESP32 Wi-Fi & Bluetooth SoC using DOIT-ESP32-DevKit-V1 Development Board