This is the board the node runs on: an ESP32-S3-WROOM-1 module on a development board, with every usable pin broken out to two 22-pin headers. Click any pin to see what it does and whether it is safe for the job you have in mind. Use the filters to light up one function at a time, so a question like "which pins read analog while WiFi is on" becomes something you can see.
Click any pin on the board. The panel shows what the pin can do, the gotchas, and whether it is a safe choice for a sensor, a button, or an LED on this N16R8 board.
Arm a challenge, then click a pin on the board to answer. The board grades it.