I recently got my hands on a Brilliant Labs Monocle, which is a nifty little tiny-screen device that connects to a host machine via Bluetooth Low-Energy protocol and offers a simple API for controlling its content and receiving input. The documentation is a little thin-on-the-ground on how to interface it to a host, but after a little bit of hacking on it I pieced it together. This post explains how to use a Python script running on a host machine to connect to and control the MicroPython instance running on the Monocle hardware to display a simple “Hello” screen.