Current Sensor ACS712 Starter Kit Kit with Arduino Uno + Sensor
Build Your Own DC Current & Wattmeter with the ACS712 Current Sensor Starter Kit for Arduino
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Ever wondered how much current your DIY motor or LED strip actually draws? This kit turns an Arduino Uno and an ACS712 hall-effect sensor into a live digital ammeter and wattmeter, displaying real-time DC current and calculated power on a bright 16x2 LCD. It’s a hands-on way to see electricity in action — perfect for school projects, hobby benches, and anyone curious about energy consumption in battery-powered devices.
What You'll Build
You’ll assemble a compact measurement module that clips into any low-voltage DC circuit and shows the current flowing in amperes and the power in watts — no multimeter needed. The LCD updates instantly as loads change, so you can test solar panels, motors, battery chargers, and even verify Ohm’s law experiments. Once built, the unit is reusable for all your future electronics tinkering.
What You'll Learn
- Read analog sensor values and convert them to engineering units (Amps, Watts) using Arduino code
- Interface a 16x2 LCD via I2C backpack to display live measurements
- Understand hall-effect current sensing and how to reduce noise with capacitors
- Build a practical portable instrument on a breadboard that you can reuse in future projects
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| ACS712 5A Current Sensor | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 10kΩ Resistors | 5 |
| 100nF Capacitors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 1 |
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
This kit is designed for CBSE Class 11–12 students building physics investigatory projects on current measurement, B.Tech ECE/EEE first-year students looking for a quick sensor lab, and ATL Tinkering Lab mentors introducing real-world instrumentation. It’s also a rewarding parent-child weekend build for ages 10+ — all breadboard wiring, no soldering required.
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?
Our AI companion walks you through every connection and code line, and you can send photos via WhatsApp for human support from our team in Bengaluru.
Can I measure AC current with this kit?
The ACS712 5A sensor is optimised for DC current measurement. For AC, you would need a different sensor and code modification; this kit focuses on DC circuits.
What voltage does the wattmeter assume?
The sample code lets you define a fixed DC voltage (like 5V or 12V) for power calculation. You can easily change it to match your project.
Is the kit suitable for a 10-year-old?
Yes, with adult guidance. The breadboard and jumper wires make it entirely plug-and-play, and the AI companion uses picture-based steps.
ACS712 5A hall-effect current sensor measures DC current. LCD shows amps and calculates watts from known voltage.
What's in this kit
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