Mr. T

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40MHz frequency counter gerber-thumbnail.jpg

Tools, APP Software Used etc.

	arduino IDE Arduino
	kicad 7

Description

40 MHz Frequency Counter with ESP32

This DIY ESP32-based counter 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….

Watch the Youtube video! https://youtu.be/HrxVauiBKCc

Download schematic, ESP32 code, PCB gerber files, KiCAD files:

https://drive.google.com/file/d/17RyRNbcFiIJlwBDIW_zKyuBqEQJFBbjL/view?usp=sharing

To use ESP32 in Arduino IDE you need the ESP32 Arduino boards link: (explained in the video):

https://espressif.github.io/arduino-esp32/package_esp32_index.json

Download Gerbers Download BOM(Bill of materials)

Oct 02,2025

352 views

40 MHz Frequency Counter with ESP32

This ESP32-based counter measures signals up to 40 MHz, with a sensitive RF pre-amplifier that can detect inputs as low as 25 millivolts - p

352

Published: Oct 02,2025

Standard PCB

Download Gerber file 4

BOM(Bill of materials)

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File Last Updated: 2025/10/02 (GMT+8)

File update record

2025-10-0217:42:04

Parts List (BOM) is updated.

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