Portable Solar Generator Monitor Kit with Arduino Nano + LED
See Exactly Where Your Solar Energy Flows — Build a 3-Channel Portable Power Monitor with Arduino Nano and OLED
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Most off-grid solar projects fly blind — you only see battery voltage, never the full journey from panel to load. This kit changes that. You'll build a handheld monitor that simultaneously measures solar panel input, charge controller output, and load consumption, then shows a live power flow diagram on a crisp OLED screen. With timestamped microSD logging, you can finally diagnose energy losses and optimize your system like a real field engineer.
What You'll Build
A portable analyzer that plugs into any small solar generator (up to 26V) via three INA219 sensor channels. The OLED display draws an animated power flow arrow from panel to battery and out to load, with real-time watts, volts, and amps. All readings are stamped with date and time from the DS3231 RTC and saved to microSD, giving you a complete energy diary you can review later on a computer.
What You'll Learn
- Wiring and reading three INA219 high-side current sensors simultaneously over I2C using a TCA9548A multiplexer
- Drawing dynamic power-flow graphics on a 0.96-inch OLED with live numerical updates
- Logging multi-channel power data to a microSD card in CSV format with DS3231 RTC timestamps
- Designing a self-contained monitor that runs from a 9V battery and interprets complete energy flow in a solar system
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| INA219 | 3 |
| TCA9548A I2C Mux | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 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
Perfect for CBSE Class 11-12 students tackling physics practicals and renewable energy demonstrations, B.Tech ECE/EEE undergraduates building a mini-project on solar analytics, and participants in Smart India Hackathon hardware challenges. ATL Tinkering Labs and IIT/NIT/VIT/BITS clubs will find this an ideal hands‑on introduction to energy monitoring and data logging without soldering.
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?
Open the AI companion from the QR code — it knows every connection and line of code for this kit. If you still have questions, message us on WhatsApp and a real engineer will help you diagnose the issue.
Can I connect this to a 12V solar panel directly?
Yes. Each INA219 channel handles up to 26V and ±3.2A, so typical 12V panels and loads are well within range. The kit does not include a panel or battery; it's a monitor you attach to your existing generator.
Does the microSD card come formatted and included?
The kit includes the microSD breakout module but not the card itself. Any FAT32-formatted microSD up to 32GB works — just pop it in and the firmware will create a new CSV log file.
Can I view logged data without a computer?
The OLED shows live readings without any external device. To analyze logs, transfer the microSD to a laptop or phone; the CSV opens directly in any spreadsheet app for graphing your solar energy data.
INA219 on panel, charge controller output and load simultaneously. OLED shows power flow diagram.
What's in this kit
- Arduino Nano
- INA219 x3
- TCA9548A I2C Mux
- DS3231 RTC
- MicroSD Module
- 0.96in OLED
- 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