Arduino matrix V1

Designed and ordered me a nice sort of daughter board. For mounting an arduino on. It's a 18 button matrix with 3 rotary encoder and a connector for ws2812b leds. Should be a nice time saver for projects like steering wheels and button boxes.

You need a pro micro board, some JST 2.54mm connectors and 2 pinheaders 3P. 

Can be programmed through simhub.

BOM shows the conponents you need, they can be bought from aliexpress, amazon etc. 

You can load the file MatrixPCB.tfp (here in attachments) into simhub arduino editing tool and upload it to the board.