MPPT Solar Charge Controller Kit with ESP32 + LED Power 2
Boost Solar Harvest by 30% — Build an ESP32-Based MPPT Charge Controller with Live Monitoring
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 a solar charger that automatically finds the optimal voltage and current to deliver maximum power to your batteries, even as clouds pass or the sun moves. With this kit, you’ll build a real MPPT controller using the perturb and observe algorithm on an ESP32, complete with dual INA219 sensors that measure power at the panel and battery simultaneously. It’s the kind of project that wins science fairs and powers off-grid sensor nodes.
What You’ll Build
A standalone solar charge controller that actively tracks the panel’s maximum power point, displays real‑time voltage, current, and power on a 0.96‑inch OLED, and safely charges four 18650 Li‑ion cells via a TP4056 module. You’ll have a functional power supply for your Arduino, ESP32, or Raspberry Pi projects, removing battery anxiety from field deployments.
What You’ll Learn
- Implementing the perturb and observe MPPT algorithm in embedded C++
- Interfacing dual INA219 current/voltage sensors over I2C with a TCA9548A multiplexer
- Handling MOSFET switching for buck conversion and battery charging
- Designing a soldered prototype PCB for reliable solar power management
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | x1 |
| INA219 | x2 |
| TCA9548A I2C Mux | x1 |
| Solar Panel 6V 2W | x1 |
| IRF540N MOSFET | x1 |
| 18650 Cell | x4 |
| TP4056 Module | x1 |
| 0.96in OLED | x1 |
| 1N5819 Diode | x3 |
| 100nF Caps | x10 |
| PCB Prototype Board | x2 |
| Soldering Iron | x1 |
| Solder Wire | 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 kit is tailored for CBSE Class 11‑12 students exploring physics and renewable energy projects, B.Tech ECE/EEE undergraduates preparing for Smart India Hackathon or final‑year prototypes, and ATL Tinkering Lab mentors guiding intermediate electronics. If you’re at an IIT, NIT, VIT, or BITS Pilani and need a reliable solar power module for your IoT deployment, this kit gives you hands‑on MPPT experience.
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 start a conversation with the AI companion, which understands your exact circuit and code. If you need a human, message us on WhatsApp and we’ll reply within a working day.
Does this kit require a separate programmer?
No, the ESP32 Dev Board has a built‑in USB‑to‑serial converter. You only need a computer with the Arduino IDE or PlatformIO.
Can I upgrade the solar panel for higher power later?
The included 6V 2W panel safely charges the supplied 18650 cells. For larger panels you would need a higher‑rated MOSFET and a DC‑DC converter, but the MPPT logic you learn here stays the same.
Will the AI companion help with the P&O algorithm logic?
Absolutely. The AI is trained on the exact code, I²C communication setup with the TCA9548A and INA219 sensors, and common debugging traps—it’s like having a personal instructor.
Perturb and observe MPPT on ESP32. INA219 at panel and battery maximises harvest. LiPo charged via TP4056.
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.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
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