Nano USB Power Meter Kit with Arduino Nano + LED
Build Your Own USB Power Meter with Arduino Nano — Measure Watts & mAh of Any USB Device
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a portable USB power meter that plugs between your charger and device, displaying real-time voltage, current, power in watts, and accumulated milliamp-hours on a crisp OLED screen. This kit puts a professional-grade measurement tool into your hands — and teaches you how INA219 current sensors work, how to write Arduino code for data acquisition, and how to solder through-hole components safely.
What You'll Build
A compact, battery-powered USB power analyzer that you can use to test any USB gadget: power banks, smartphones, development boards, or DIY projects. The OLED instantly shows live readings, and the mAh counter helps you estimate battery capacity or energy usage over time.
What You'll Learn
- How a high-side current sensor (INA219) measures voltage and current simultaneously
- Arduino programming for I2C communication and OLED display control
- Safe soldering techniques for through-hole and basic SMD components
- Calculating power (watts = volts × amps) and integrating current over time to get mAh
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| INA219 | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| PCB Prototype Board | 2 |
| USB-A Socket | 1 |
| USB-A Plug | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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
Ideal for young makers aged 10+ (with adult guidance for soldering), ATL Tinkering Lab students, CBSE Class 7-10 electronics enthusiasts, and B.Tech first-year students who want a practical introduction to current sensing. The kit doubles as a useful lab tool for measuring USB device power consumption in school and college projects.
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?
The AI companion on your phone will walk you through each connection, and you can send photos over WhatsApp for personalised help within hours.
Can I use this kit to measure the capacity of my power bank?
Absolutely — the mAh counter on the OLED tracks total charge drawn, so you can compare your power bank’s actual capacity against its rating.
What USB devices can I connect to this power meter?
Any standard USB-A device, from smartphones and LED lamps to Arduino boards and USB fans. The sensor handles up to 26V and 3.2A, covering most gadgets.
Is the soldering iron safe for beginners?
The included iron has temperature control and a safety stand. Younger builders should use it under adult supervision; the build guide includes a soldering safety section.
Do I need any prior programming experience?
No — the kit comes with full Arduino code, and the AI companion explains every line. You’ll learn by uploading and customising it.
INA219 on Nano measures voltage and current of any USB device. OLED shows watts and estimates mAh drawn.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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