Which firmware

How can I check which firmware is installed on the ESP8266 of the Cactus micro r2.
(AT or ESPduino) Bought 2 Cactus micro’s recently. I already wrote an AT-sketch for the
Arduino part of the Cactus so I have to reflash with AT firmware when the ESPduino
firmware is on the ESP8266.


Please see the tutorial page.

  • Download the hardwareSerialMonitor sketch first. If this work, it’s AT firmware.
  • Download rest.ino sketch. If this work, it’s ESPduino firmware.