Secret to Uploading Arduino Sketch to Cactus Micro?

Arduino
3

The pre-programed sketch is SerialMonitor. The esp8266 module output lines after “Hello Cactus Micro”. Don’t choose the board type as “Arduino Leonardo”. Cactus Micro is working at 3.3V/8Mhz. You must choose “LilyPad Arduino USB”.

I used Arduino 1.0.6 to program it. It’s more stable.