ESP32 Frequency Counter Tutorial (40 MHz Range + RF Preamp)

This video shows you how to build a ESP32-based frequency counter which can measure signals up to 40 MHz, it has a built-in adjustable test signal and a RF pre-amplifier so it can detect inputs as low as 25 millivolts. And as a bonus you get an internet clock for free…. 0:39 Overview 0:56 Schematic: RF pre-amplifier 2:44 PCB layout 5:21 Set up Arduino IDE & program ESP32 7:25 Programming troubleshooting 8:04 Power up & test! Download schematic, ESP32 code, PCB gerber files, KiCAD files: https://drive.google.com/uc?export=download&id=17RyRNbcFiIJlwBDIW_zKyuBqEQJFBbjL ESP32 Arduino boards link: https://espressif.github.io/arduino-esp32/package_esp32_index.json