Solar Energy Production Chart Kit – Visualize Daily kWh Output with ESP8266 and INA219

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Schools, hackathons, and curious makers often ask: “How much solar energy did my panel generate today compared to yesterday?” This kit answers that question with hard data. You’ll wire a 6V solar panel to an INA219 precision current sensor, let an ESP8266 log energy production every hour to a MicroSD card, and serve a tidy OLED bar chart that redraws each day to compare today’s cumulative kWh against yesterday’s. It’s a real-world IoT dashboard that teaches data logging, time-stamped storage, and on-device visualization — skills that directly apply to solar monitoring, energy auditing, and Smart India Hackathon agriculture-energy themes.

What You'll Build

You’ll assemble a working solar production station that measures voltage and current, calculates watt-hours, and logs total hourly kWh using the DS3231 real-time clock for precise timestamps. The ESP8266 reads the INA219 sensor, saves data to the MicroSD, and updates a bar chart on the 0.96-inch OLED display — showing today’s production growing each hour, side-by-side with yesterday’s final value. By the end, you’ll have a standalone device that runs continuously and reveals how cloud cover, tilt, or time of day affects energy output.

What You'll Learn

• Measure DC current and voltage using the INA219 over I2C and calculate instantaneous power
• Log time-stamped energy data to a MicroSD card with an RTC and format it as kWh for easy charting
• Create a dynamic OLED bar chart that compares today’s hourly production against the previous day’s totals
• Use the ESP8266 to serve a local web page that mirrors the same chart, accessible from a phone during build checking
• Integrate passive components like pull‑up resistors and decoupling capacitors to stabilise I2C communication on a breadboard

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

CBSE Class 11-12 students working on investigatory projects in physics or computer science will find the data-logging angle fits the curriculum perfectly. B.Tech ECE/EEE students at NITs, VIT, BITS, or state engineering colleges can use it as a compact solar-energy audit prototype for hackathons or mini-projects. ATL Tinkering Lab mentors will appreciate the one-box solution that moves learners from breadboard wiring to meaningful energy analytics without hunting for matched sensors and library conflicts.

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.