Category: Headers

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…