R4TKN Deauther transforms the Ai-Thinker BW16 (RTL8720DN) into a dual-band 2.4/5 GHz Wi-Fi security lab tool, simulating disconnection events to audit and harden networks—featuring a portable, TFT-driven UI for authorized testing only.

This is the development kit using the Esp32-Wrover microcontroller that I designed.

CH591D module- BLE5.4, USBC, RTC, ws2812b

The development board uses the RP2040 microcontroller, you can order your own pcb as well as components to solder yourself.

Simple Cute Dog Keychain with LED's

Open Hardware and Firmware for a Hall-sensor-based 6-step BLDC motor controller using PIC18F Microcontroller.

This guide describes how to build the XIAO METER demo board, designed to easily test a wide range of sensors using the XIAO SAMD21 by Seeed Studio, the smallest member of the Seeeduino family. The module measures only 20×17.5×3.5mm, and features a Cortex-M0 microcontroller, 11 I/O pins, and supports UART, I2C, and SPI communication. It is fully compatible with the Arduino IDE.

Reverse enginnering of 6 layers PCB

In this tutorial I am going to create a chaser circuit that can drive 20 or more LEDs using 555 timer IC and CD4017 decade counter.

This is a twin delta loop antenna designed for the 1200MHz band for HAM radio practitioners. It can be used by soldering an SMA connector.