Overall Idea I was working on a Christmas ornament PCB that was meant to be something that you could power with USB. However, the design fell through for a number of reasons: PCB was too thin Schematic had some bugs Timing didn’t allow for a redo JLCPCB doesn’t do PCBA(PCB assembly) for boards that are…
ESP8266 Wemos D1 Mini GPIO Expander
Overview So a few years ago, I had purchased a good number of Wemos D1 Mini modules. However, I never got around to actually doing anything with them other than giving them away every now and then. Design Considerations The number of GPIO on the board is woefully low, if you wanted to control a…
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 those designs that was chatted about and the goal was to see how much I could fit onto a 50x50mm board. Design Considerations Well, went through several revisions. And after I got these boards in, I think I…
LED Panel, First Pass
Overview One night, I was wondering how many LED(s) I could stick onto a PCB and how closely JLCPCB could place the LED(s). So I made panels that were 3 columns of 16 x White LEDs. Design Considerations I wanted a good deal of LED(s) on the board and I wanted to be able to…