ESP32 ADC Calibration Demo Kit with ESP32 + LED
Master ESP32 ADC Calibration with eFuse Data and OLED Display — ESP32 ADC Calibration Demo Kit
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 precision voltage measurement system that unlocks the ESP32's hidden factory calibration data. Instead of accepting notoriously non-linear analog readings, you will use the eFuse correction coefficients to compare raw and calibrated voltages side by side on an OLED. Perfect for engineering students, IoT enthusiasts, and anyone designing sensor interfaces where every millivolt counts.
What You'll Build
A standalone calibration demo that reads two potentiometer voltages, retrieves the ESP32's internal eFuse calibration parameters, applies linear correction formulas in code, and displays raw vs. corrected values on the 0.96-inch OLED. You'll see how an uncalibrated ADC can drift by hundreds of millivolts and how a few lines of code bring it to near-perfect linearity.
What You'll Learn
- How to extract and interpret the ESP32's eFuse calibration coefficients stored at the factory
- How to implement a linear correction algorithm that adjusts raw ADC readings in Arduino/C++ code
- How to interface a 0.96-inch I2C OLED display and render live voltage data
- How to use potentiometers as stable, adjustable voltage dividers for analog input characterization
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| 10kΩ Potentiometer | 2 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 15 |
| Micro USB Cable | 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
CBSE Class 11–12 students exploring precision electronics for physics projects, B.Tech ECE/EEE undergraduates building sensor-based systems, Smart India Hackathon teams that need reliable analog-to-digital conversion, and ATL Tinkering Lab mentors teaching real-world calibration. Any maker in India who has struggled with inconsistent ESP32 ADC readings will get a clear, repeatable method to fix them.
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 included with the kit for immediate access to the AI companion. You can also send a WhatsApp message — our team will guide you through any wiring or code issue within hours.
Will this kit help me understand why my ESP32 analog readings are inaccurate?
Yes. It demonstrates the built-in eFuse calibration method that corrects the ESP32's ADC non-linearity. You'll measure the error directly and see the corrected values on the OLED, giving you a repeatable technique for any future analog project.
Can I use this calibration method with other sensors like temperature or light?
Absolutely. Once you understand how to read eFuse data and apply correction factors, the same approach works for any analog sensor connected to the ESP32's ADC. The 4.7kΩ resistors and breadboard let you easily swap in other inputs to test.
I’ve never used an OLED display before. Will I manage?
The AI companion provides pin‑by‑pin wiring guidance and code snippets. The 0.96‑inch OLED communicates over I2C with just four connections, making it straightforward even if this is your first display module.
ESP32 ADC calibrated using eFuse calibration data. Shows raw vs corrected voltage readings on OLED.
What's in this kit
- ESP32 Dev Board
- 10kΩ Potentiometer x2
- 0.96in OLED
- 4.7kΩ Resistors x5
- 400-pt Breadboard
- M-M Wires x15
- Micro USB Cable
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