https://v89infinity.com/%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B9%81%E0%B8%95%E0%B8%81%E0%B8%95%E0%B9%88%E0%B8%B2%E0%B8%87%E0%B8%A3%E0%B8%B0%E0%B8%AB%E0%B8%A7%E0%B9%88%E0%B8%B2%E0%B8%87-arduino-board-vs-node-mcu-vs-raspberr/
All are microcontroller boards except Nodemcu that is an open-source firmware and development kit based on esp8266&32.
