Battery Voltage Gauge Meter Kit with Arduino Uno
Battery Voltage Gauge Meter Kit with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine watching a real-time animated needle sweep across a colourful gauge that shows exactly how much charge is left in a battery — that’s what you’ll build with this kit. Using the INA219 precision current/voltage sensor and a vibrant TFT screen, you’ll create a professional-looking battery voltage meter with green, yellow, and red zones, just like in cars or dashboards. This beginner-friendly project teaches the fundamentals of sensor integration, display programming, and data visualization.
What You'll Build
You’ll assemble a fully functional battery voltage gauge meter that reads any DC voltage from 0 to 5V and displays it on a 1.8-inch TFT screen as a smooth, animated needle moving across a graduated scale. The gauge instantly changes colour zones to indicate safe, warning, and critical voltage levels, giving a clear visual indicator of battery health. Perfect for monitoring 3.7V Li-ion cells, 9V batteries, or any low-voltage DC source.
What You'll Learn
- How to connect and read data from an INA219 sensor over I2C
- Programming TFT displays with the ST7735 library to draw dynamic graphics
- Creating animated gauge needles that respond to real-time sensor values
- Calibrating voltage readings and mapping them to visual elements and colour zones
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| INA219 | 1 |
| 1.8in TFT ST7735 | 1 |
| 4.7kΩ 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 ideal for school students (CBSE/ICSE) in grades 5-10 learning the basics of electronics and programming, for ATL Tinkering Lab projects, and for young hobbyists who want to build a cool, functional gadget. It’s also a great first Arduino project for B.Tech ECE/EEE first-years dipping into embedded systems.
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 build companion, accessed via the QR code, provides step-by-step guidance for every connection and code line. If you need human help, WhatsApp message us directly — we respond within hours.
Does this kit work to measure my mobile battery?
The gauge is calibrated for 0-5V DC. Mobile phone batteries are 3.7V nominal but require careful handling; we recommend using it with standard AA, 9V, or lithium coin cells initially. Our guide shows how to adapt it safely.
Can I use this with an ESP32 instead of Arduino?
Yes, the INA219 and ST7735 work on 3.3V logic, but this kit is optimized for the Arduino Uno (5V) and comes with pre-written code for that platform. If you adapt it, our AI companion can still help with wiring differences.
My TFT shows no display. What should I check?
First ensure the 5V and GND connections are secure, and the CS/DC/RST pins match the code configuration. The AI companion includes a troubleshooting flowchart that walks you through common display issues.
INA219 draws an animated needle gauge on TFT showing battery voltage from 0 to 5V with colour zones.
What's in this kit
- Arduino Uno R3
- INA219
- 1.8in TFT ST7735
- 4.7kΩ Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
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