Sequential Shifter remixed

I've remixed the previous model in order to enhance it. Now M3 heat inserts are used, M5 screws are used for connecting the levier to the mechanism, a new design of base was created. The knob now is fixed to the levier using a M5 screw.I've used an attiny85 that can be fixed directly under spring mechanism (the code is provided in the zip)Parts required:1x M4 x 50mm3x M5 x 35mm2x M5 x 20mm1x M5 x 40mm8 x M4 x 35 or 40mm2x microswitch1x Attiny851x extruder springWiring:one wire from ground to the