Make your own Simon Says Memory Game

Print, assemble and program your own Simon Says game. How much of the randomly generated colour pattern can you memorise and repeat back?

Not sure, then why not make one and find out. (My current best is level 14).

With an Arduino Nano at its core, this project also incorporates an OLED screen, passive buzzer, and some big bright buttons.

List of items used in this project and where to find them :

Elegoo Arduino Nano (x1): https://geni.us/ArduinoNanoV3
OLED Screen (1): https://geni.us/OLEDscreen
Battery Holders (x2): https://geni.us/2aaBatteryHolder
Resistors (220 Ohms) (x4) : https://geni.us/Ufa2s
Wire: https://geni.us/22AWGWire
AA Batteries (x4): https://geni.us/AABatteries
Illuminated Momentary Buttons (x4): https://geni.us/IllumMomentButtons
Nuts and Bolts - M3 x 10 (x4): http://geni.us/NutsAndBolts
5v buzzer (x1) : https://geni.us/5vBuzzer
PLA Filament: https://geni.us/PLAFilament
Illuminated Power Switch (x1): https://geni.us/IllumPowerSwitch
Battery powered glue gun: http://geni.us/BoschBatteryGlueGun
Battery powered soldering iron: http://bit.ly/SealeySDL6

Code:

The code can be downloaded from here: https://github.com/DIY-Machines/SimonSays

3D CAD Files

3D printable STL files can be downloaded from here: https://www.thingiverse.com/thing:3723181

Wiring Diagram

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Sensorless Homing with RP2040 & TMC2209

By Lewis • February 24, 2026

In this video, I’ll show you how to set up sensorless homing using a TMC2209 stepper driver — no mechanical limit switches required! Perfect for 3D printers, CNC machines, robotics, and other DIY electronics projects. I’ll guide you through the wiring, Arduino code, and how to tune StallGuard for accurate, reliable homing. Whether you’re building a CoreXY, a custom motion control system, or just want to learn more about stepper motor drivers, this is a great place to start. Let’s build smarter! Why would we want to use sensorless homing? Well first the Pros…. There’s no need for extra mounts, additional components or running long dangling cables to one or both ends of the carriage or other moving component. And there are always cons, so in this case you’ll need a stallguard-capable driver (they cost a little more and are only manufactured by Trinamic) and accuracy isn’t great at slow speeds.