ThumbsUp! Keyboards

I designed a trackball, two versions actually, which differ in the switches used V3 with Kailh Choc switches: https://github.com/ak66666/ThumbsUp-Trackball-v3 V5 with Omron micro-switches: https://github.com/ak66666/ThumbsUp-Trackball-v5-Omron Assembly steps are quite the same, except for the switches. The original article version described v3, steps specific for v5 are added in the end. I sell the PCBs on Etsy: https://www.etsy.com/ca/listing/4367668734/thumbsup-trackball-v3-pcbs-for-dyi In this post I show the process of building the board. Bill of Materials To assemble you will need to obtain the following parts: 1x PMW3610 sensor and lens (https://www.aliexpress.com/item/1005007118767775.html) 1x Nice!nano v2 (or clone) (https://www.aliexpress.com/item/1005006074191337.html) This will give you a Bluetooth-connected device. You may add another nice!nano to make a USB dongle . 1x 34mm ball (https://www.aliexpress.com/item/1005007857787050.html) 1x 3.7V 110mAh 301230 Lithium Polymer...