Your web browser doesn't support Web Serial. Use Chrome 89+, Edge 89+, Firefox 151+ desktop, Opera or a compatible Chromium browser.Needs HTTPS (or localhost).
Select a board above.
Tips (Boot Mode)
Cardputer
Power off and unplug USB. Hold G0 (upper-right), then plug USB while still holding.
Stamp-S3
Press and hold the BOOT button before powering on or plugging in USB to enable flashing mode.
Atom-S3 Lite
Power on and press the RESET button for 3 seconds or until the LED blinks green.
Stick-S3
Press and hold the POWER button until the LED blinks green to enable flashing mode.
T-Embed
Hold the encoder center button, then press RESET. (CC1101 version: the button is next to the ESP32-S3.)
S3-Dev-Kit
Make sure to plug USB to the COM programming port, hold the BOOT button and power on.
Xiao-S3
Press and hold the BOOT button before powering on or plugging in USB to enable flashing mode.
Linux Users
If flashing fails, run: sudo setfacl -m u:$USER:rw /dev/ttyACM0 This grants access to the serial port.