It's CircuitPython Time!

In this project we’ll show you how to make a watch using an Adafruit Feather M4 Express, an RTC module and an OLED display.

This uses CircuitPython, which is a version of Python designed to run on microcontrollers.

3D Printed Watch Band

The enclosure and wristband are 3D printed in ninjaflex, so it’s both strong and comfortable to wear.

The whole circuit fits into the 3D printed case and has a nice snug fit.

The two straps are fitted into the slots on the side and can be customized to fit different sized wrists.

Prerequisite Guides

We suggest walking through the following guides to get a better understanding of the components and CircuitPython. We also have great tutorials on learning how to solder.

• Adafruit Guide to Excellent Soldering
• Adafruit Feather M4 Express
• Welcome to CircuitPython

Parts, Tools and Supplies

You'll need the following tools, parts and supplies to complete this build.

• Feather M4 Express
• RTC FeatherWing
• OLED FeatherWing
• Tripler FeatherWing
• CR1220 Coin Cell
• 400mAh 3.7v Battery
• Short Male Headers for Feathers
• Female Header set for Feathers
• 3D Printer
• Flexible Filament
• Soldering Iron & Solder
• Diagonal Flush Snips