Bidirectional Power Flow Meter Kit with Arduino Uno + LED
Bidirectional Power Flow Meter Kit with Arduino Uno & 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.
Every modern energy setup—from rooftop solar to battery backup—must track power direction. This kit shows you exactly how. You’ll assemble a bidirectional power flow meter with an Arduino Uno, INA219 sensor, and a crisp 0.96-inch OLED. Within hours, you’ll be reading import (grid to load), export (load to grid), and net power—clearly labeled and updated in real time.
What You'll Build
A self-contained meter that measures current flowing in both directions through a low-value shunt. The INA219 captures voltage and current with 1% accuracy; the Arduino computes instantaneous power and determines whether energy is being imported or exported. The OLED screen displays “Import,” “Export,” and “Net Power” with a directional arrow, giving you a professional-grade power analyzer suitable for solar micro-grids, EV charging experiments, or smart home energy monitors.
What You'll Learn
- Integrate INA219 and ACS712 current sensors with Arduino for bidirectional current sensing
- Calculate real-time power (Watts) and net energy flow direction from sensor data
- Program a 0.96-inch OLED to display dynamic values with clear import/export labels
- Build a breadboard-based energy meter that can be extended to solar, wind, or battery storage projects
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| INA219 | x1 |
| ACS712 20A | x1 |
| 0.96in OLED | x1 |
| 10kΩ Resistors | x5 |
| 100nF Capacitors | x5 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| 9V Battery Snap | x1 |
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 beginner-level energy monitoring kit is designed for CBSE Class 11–12 students exploring electrical power measurement, B.Tech first-year ECE/EEE lab assignments, and ATL Tinkering Lab innovators. It’s also a ready-made hardware base for Smart India Hackathon teams working on energy management or smart grid prototypes. The step-by-step AI companion makes it accessible even if you’ve never touched an Arduino before.
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 to start a conversation with our AI build assistant. It knows every wire, line of code, and common mistake. If you need a human touch, our WhatsApp support is also included.
Can I use this kit to measure solar panel output?
Absolutely. The INA219 and ACS712 together sense current flow direction. Connect a small solar panel and a battery; the OLED will show “Export” when the panel feeds the battery and “Import” when the battery discharges to a load.
Do I need an external power supply or just the 9V battery?
The kit includes a 9V battery snap for portable operation. You can also power the Arduino via USB cable (not included) from a laptop or phone charger; the 9V option is handy for standalone field tests.
Can I log the data to a computer or send it to the cloud?
Yes. The Arduino code outputs import, export, and net power via serial monitor. You can easily capture this data in a Python script for logging, or add a Wi-Fi module to push readings to an IoT platform like Blynk or ThingSpeak.
INA219 detects both import from grid and export to grid. OLED shows net power with import export labels.
What's in this kit
- Arduino Uno R3
- INA219
- ACS712 20A
- 0.96in OLED
- 10kΩ 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