Micro:bit Soil Moisture Guardian Kit with BBC Micro:bit
Build a Plant Watering Alert System with the Micro:bit Soil Moisture Guardian Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Watch your favourite potted plant become a smart companion. This kit guides young makers to connect a soil moisture sensor to the BBC micro:bit, then program it to beep a buzzer and flash yellow LEDs the moment the soil dries out. It’s hands-on plant care that introduces real-world sensing and automation without needing a single tool.
What You'll Build
You’ll assemble a working soil moisture guardian that sits in a plant pot, reads the wetness of the soil, and immediately alerts you with sound and light when it’s time to water. The system runs on batteries, so you can leave it monitoring a plant on your windowsill, in a school garden, or as a science fair exhibit that actually cares for a living thing.
What You'll Learn
- How to connect a soil moisture sensor to the micro:bit using alligator clips
- Program conditional logic in MakeCode to read sensor values and trigger outputs
- Use a piezo buzzer and yellow LEDs as alert indicators for dry soil
- Power a standalone circuit with AA batteries for long-duration monitoring
Kit Contents
| Component | Quantity |
|---|---|
| BBC Micro:bit v2 | 1 |
| Soil Moisture Sensor | 1 |
| Piezo Buzzer | 1 |
| LED Yellow | 2 |
| Crocodile Clips | 4 |
| MicroUSB Cable | 1 |
| AA Battery Holder | 1 |
| AA Batteries | 2 |
| M-M Wires | 10 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Designed for curious kids aged 8–10, this kit is also a hit with parents guiding home STEM explorations and educators looking for ready-to-run projects in ATL tinkering labs or CBSE classroom activities. Whether it’s a school biology-meets-tech assignment or a weekend bonding activity, the soil moisture guardian turns a simple circuit into a life science experiment.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Scan the QR code on the box to start a conversation with our AI companion, and you can always message us on WhatsApp for a real human if something unexpected happens.
Will this work for any type of plant?
The sensor measures electrical conductivity, so it works with any soil-based potted plant. You can tweak the dryness threshold in the code for cacti, succulents, or moisture-loving ferns.
Do I need any prior coding experience?
No. The kit uses block-based MakeCode with drag-and-drop logic. The AI companion shows every step, from connecting clips to flashing your first alert sequence.
Can I leave the kit connected to the plant all day?
Yes. With the AA battery pack, it runs for days. Remove the metal sensor probe from soil when not in use, and dry it off to prevent long-term corrosion.
Soil moisture sensor connected to micro:bit sends an alert when a plant is too dry — automated plant care for kids.
What's in this kit
- BBC Micro:bit v2
- Soil Moisture Sensor
- Piezo Buzzer
- LED Yellow x2
- Crocodile Clips x4
- MicroUSB Cable
- AA Battery Holder
- AA Batteries x2
- M-M Wires x10
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items