ESP32 ADC Project: Build an LED Level Meter

Source Code: https://github.com/James8234/ESP32---Arduino-IDE---Projects/blob/f0cbbd11a7f397937969606415220d1f7f25b0df/ADC%20-%20Poteniometer%20-%20LED%20meter

Learn how to use the ESP32 ADC (Analog to Digital Converter) by building a real beginner-friendly project: an LED level meter controlled by a potentiometer. In this video, we’ll convert analog signals into digital values and visualize them instantly using LEDs — no guesswork, just clear results.

You’ll see how the ESP32 reads analog input, maps ADC values, and drives multiple LEDs based on voltage levels. This project is perfect if you’re new to ESP32 GPIO, ADC pins, or want a hands-on way to understand how analog signals become digital data.

Along the way, we’ll cover:
- How ESP32 ADC works (and its limitations)
- Wiring a potentiometer and LED array
- Reading ADC values in code
- Mapping analog input to LED output
- Common beginner mistakes (and how to avoid them)

Hardware:
ESP32 https://amzn.to/4rXOlCZ

VIDEO CHAPTERS ⏱️
00:00 Introduction
00:14 Parts
00:39 Putting Hardware together
05:22 Limitations of hardware
06:33 Coding Section
09:36 Outro