DIY Wireless Follow Focus System Cheap Solution 5DMK3 - for 80€

This is my do it yourself follow focus system for my 5D Mark 3 Servo Motor 15€ Wireless System 30€ Case 3€ LiPo 3S (for Sender) 14€ LiPo 2S (Receiver) 5€ Gearwheel for Servo Motor 6€ And lots of work ;-) This DIY System costs about 80€ (ca. 100$) It works great and the best thing is it is very cheap compared to other systems.