meishi Trackball Module

A DIY trackball verification board the size of a business card (55mm x 91mm). Like the cocot46plus, it uses the ADNS-5050 mouse sensor, and can be used together with a ball case that can hold a 34mm trackball. In addition to the trackball, it is equipped with 2 key switches, a rotary encoder, and an OLED, so you can also try out the full range of typical DIY keyboard functions. The 2u x 2u (approx. 38mm square) plate in the center can be cut off and used as a trackball module. If you have a 5V Pro Micro with 3 free GPIO pins, you can connect it with pin headers or cables to build your own original DIY keyboard with a trackball.