Arduino memory / p5.js

If you apply power to the Metro through the power jack, you can disconnect/reconnect from p5.js.   There’s a tiny power switch between the USB port and power connector that needs to be flipped to handle external power.

1. Connect Arduino to computer, download sketch.
2. Disconnect Arduino, collect data
3. Connect Arduino to computer, run p5.js connection and read data

Here’s a simple Arduino sketch and p5.js script: memory-example