Voltage Sensor Starter Kit Kit with Arduino Uno + Sensor
Build a Digital Voltmeter with Arduino Uno & LCD – Voltage Sensor Starter 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.
Safely measure battery or power supply voltages from 0 to 25V and display real-time readings on a bright 16x2 LCD. This kit turns an Arduino Uno into a reliable digital voltmeter you can use to check AA cells, 9V batteries, or DC adapters without risking your board. It’s a first step into practical electronics measurement, made simple and entirely reusable.
What You'll Build
A handheld digital voltmeter that shows precise DC voltage on a clear LCD screen as soon as you connect the sensor probes. You’ll be able to test any low-voltage DC source instantly and verify its health — a tool you’ll reach for in future school projects, Arduino experiments, and home troubleshooting. The breadboard design means everything snaps together without soldering.
What You'll Learn
- How a voltage divider scales down higher voltages for an Arduino’s 5V analog input
- Wiring and coding an I2C LCD backpack for crisp text output
- Reading analog sensor values and converting them into meaningful voltage readings through simple code
- Calibrating measurements and understanding accuracy limits in DIY instruments
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Voltage Sensor Module | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 10kΩ Resistors | 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
Young learners building their first electronics project, CBSE Class 11-12 students exploring measurement in physics, and B.Tech ECE/EEE freshers setting up a basic lab toolkit. It’s also a perfect fit for ATL Tinkering Labs, parent-child weekend STEM builds, and anyone who wants a no-fuss introduction to Arduino-based instrumentation.
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 open the AI build companion trained on this exact voltmeter project; it offers step-by-step guidance plus direct WhatsApp support if you need human help.
Can I measure AC voltages with this kit?
No, this kit is designed for DC voltages only. The voltage sensor module works on DC up to 25V; for AC you would need an AC voltage sensor module.
Which batteries can I test?
You can test any DC source between 0 and 25V, including AA, AAA, 9V batteries, 12V adapters, and USB power banks. The sensor’s voltage divider makes it safe for the Arduino’s 5V limit.
Do I need a soldering iron?
No soldering required. All connections are made on the included breadboard with jumper wires, so the build is fully reusable and tool-free.
Voltage divider sensor reads 0-25V and displays on LCD. Safe way to measure battery or supply 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