Posted in CH340G Circuit Boards Development Boards Integrated Circuits Packages QFN SMD/SMT STM32 MCU TQFN TQFP

STM32 Dev Board With CH340G USB

Overview Development board employing an STM32 MCU with a CH340G USB interface IC. LED(s) associated with GPIO…

Posted in Circuit Boards Interface Boards Packages PCB to PCB USB-A

USB-A PCB Interface Card

Overall Idea I was working on a Christmas ornament PCB that was meant to be something that…

Posted in Circuit Boards ESP8266 Espressif Modules GPIO Expanders Headers Packages PCB to PCB TQFN TQFP WEMOS D1 MINI

ESP8266 Wemos D1 Mini GPIO Expander

Overview So a few years ago, I had purchased a good number of Wemos D1 Mini modules….

Posted in Circuit Boards Discrete Components ESP32 Espressif Modules Headers Interface Boards MOSFET Optical Isolators/Couplers Packages SMD/SMT SOT TQFN TQFP

ESP32 Quad Optically Isolated n-mosFET Switch Board

Overview So I love chatting up circuit designs with folks. And this board is actually one of…

Posted in Circuit Boards Development Boards Discrete Components General Headers LED Packages SMD/SMT

LED Panel, First Pass

Overview One night, I was wondering how many LED(s) I could stick onto a PCB and how…