You are reading a single comment by @Gordon and its replies.
Click here to read the full conversation.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Just edit
boards/STM32F4DISCOVERY.pyand change the pin name forBTN1.Remember there will still be a pullup(or down) resistor on the F4 board though, which you may want to remove.