“Excellent Cortex-M4 single-board computers, robust and I/O heavy. I use them for embedded development integrating a number of peripheral boards (also from Adafruit, mostly). Deep-sixing the onboard MicroPython I write in C running under FreeRTOS 10.0. The board has a JTAG/SWD connector to ease debugging so more heavyweight development tools like Keil, IAR, VisualGDB, MicrochipStudio and - my favourite, Rowley Crossworks - IDEs can be brought to bear. Availability of Adafruit hardware in the UK can be sporadic and expensive, luckily Pimoroni are one of the more reliable and reasonable online sales sites for Adafruit components.”
“I purchased Adafruit Metro M4 to evaluate the performance of uLisp. As a result of actually working it, it satisfied me. This is because the execution performance and the number of objects that can be handled are superior to the ESP32 with the same clock frequency. Therefore, we got a strong motivation to make prototype using uLisp in full swing.”
