Build a D20 gaming die that tells you what number you rolled! Made with 3D printed parts, CircuitPython and an Adafruit RP2040 PropMaker Feather.

RP2040 PropMaker

This is a remake of a classic DIY project from 2015. This new build simplifies the assembly: instead of several breakout boards, everything is now all-in-one!

As this will come up: "But is it balanced?™©®

No. It’s full of electronics!

There’s a space to add a few pennies or some plumber’s putty as a counterbalance…you can work at it a bit if you like…but this will never be a perfect entropy source. It’s intended for casual gaming, as an “executive decision maker,” or simply a conversation piece to get folks interested in code and electronics.

Parts

Video of a white hand pressing a button to briefly turn an LED strip into white lights. Also wired up to the microcontroller are a servo motor and a speaker.
The Adafruit Feather series gives you lots of options for a small, portable, rechargeable microcontroller board. By picking a feather and stacking on a FeatherWing you can create...
$19.95
In Stock
Mini Oval Speaker with pico blade connector
Hear the good news! This wee speaker is a great addition to any audio project where you need 8 ohm impedance and 1W or less of power. We particularly like...
Out of Stock
Slim Lithium Ion Polymer Battery 3.7v 400mAh with JST 2-PH connector and short cable
Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This...
Out of Stock
Breadboard-friendly SPDT Slide Switch
These nice switches are perfect for use with breadboard and perfboard projects. They have 0.1" spacing and snap in nicely into a solderless breadboard. They're easy to switch...
$0.95
In Stock
USB Type A to Type C Cable - approx 1 meter / 3 ft long
As technology changes and adapts, so does Adafruit. This  USB Type A to Type C cable will help you with the transition to USB C, even if you're still...
$4.95
In Stock
8 x Neodymium Magnets
D42 1/4" dia. x 1/8" thick
2 x M2.5 Steel Screws
M2.5 x 6mm long screws
1 x Starbond Medium Super Glue
2 oz. Medium CA Glue (Premium Cyanoacrylate Super Glue)
1 x M2.5 Screw Tap
Metric Machine Taps M2.5 x 0.45mm

Optional Parts

Angled shot of 25 Through-Hole Resistors - 100K ohm 5% 1/4W.
ΩMG! You're not going to be able to resist these handy resistor packs! Well, axially, they do all of the resisting for you!This is a 25 Pack of 100K...
$0.95
In Stock

This guide was first published on Aug 30, 2023. It was last updated on Jun 17, 2024.

This page (Overview) was last updated on Mar 08, 2024.

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