Arduino has created a Renesas RA4M1 microcontroller board in its Nano form-factor. Called Nano R4, it follows the Uno R4, the first Arduino to use the RA4M1. “Whether you’re working on a connected ...

They’re controlled by an Arduino Nano which has a built-in inertial measurement unit, allowing it to sense the angle the pipe is being held at as well as making determinations about its movement.

Burning the bootloader to the board requires either an Arduino programmed as an ISP, or a USBasp. The programmer is connected to the middle six pins of the J3 connector on the Anet v1.0 board.