Automatic Smart Plant Pot

Print, assemble and program your own intelligent Smart Plant Pot. With a hidden water reservoir, pump and sensors why not make your plant care easy. With an Arduino Nano at its core this project uses a water level sensor to let you know when to refill the concealed tank and a solid moisture sensor to figure out when to water your plant based on its needs.

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CORRECTION: 4:05 into the video I incorrectly say to use 20cm wires to connect the water level sensor. The correct length is 35cm.

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

Arduino Nano: https://geni.us/ArduinoNanoV3
Mini submersible pump: https://geni.us/MiniPump
5mm tubing: https://geni.us/5mmTubing
Transistor: https://geni.us/2npn2222
Resistors (1k and 4.7k): https://geni.us/Ufa2s
Wire: https://geni.us/22AWGWire
3mm LED: https://geni.us/LEDs
Water level sensor: https://geni.us/WaterLevelSensor
Nuts and Bolts: http://geni.us/NutsAndBolts
Soil moisture sensor: https://geni.us/MoistureSensor
Half Perma-proto board: https://geni.us/HalfPermaProto
PLA Filament: https://geni.us/PLAFilament

Battery powered glue gun: http://geni.us/BoschBatteryGlueGun

Battery powered soldering iron: http://bit.ly/SealeySDL6

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The code can be downloaded from here: https://github.com/DIY-Machines/SmartPlantV1

3D printed parts and wiring diagram can be downloaded from here: https://www.thingiverse.com/thing:3537287

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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.