Context

I went to leHACK 2023 and got the chance to participate to the hardware village workshop, ending up with a board loaded with 4 LEDs that can be turned on when powered.
This is cool but somewhat basic.
When I went home, I found some chips laying around on my desk and ended up thinking of a little project that would use a NE555N chip to make the LEDs blink

Schematics and pcb mapping

I decided to install easyEDA to do the schematics and give a try at designing PCBs.

Here is the results

Schematics

PCB layout

Actual PCB

This solder job and setup might not be the best but it’s just a 2 hours project made with not enough sleep.

Final result

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b1fb0206-83f8-4594-810e-f5cb6c4d5874/VID_20230705_175132_924.mp4

Sources

EasyEDA - Online PCB design & circuit simulator

EasyEDA is a free and easy to use circuit design, circuit simulator and pcb design that runs in your web browser.

https://easyeda.com/

NE555N

This small chip is used to generate a clock that can goes up to 2 MHz

https://whiterose-infosec.super.site/ne555n