The final product I designed at Archer Components is the second generation D1x Trail electronic bicycle shifter. It pairs with either of the two wireless remotes I designed, and converts any bicycle with a conventional mechanical derailleur to electronic shifting.

The shifter utilizes a servo motor to turn a lead screw which controls a drive nut, similar to how a CNC machine operates. The drive nut pulls on the cable of the existing derailleur to shift gears. Positional feedback is given by a linear potentiometer on a flex PCB. Indexing can be adjusted independently for every gear via the handlebar remote or in a phone app, giving the user perfect shifting throughout the life of their bicycle.

Benefits over the first generation D1x are easier battery swapping and charging via the quick release battery, for which I also designed a standalone charger. This design also has better water ingress protection, a 30% weight decrease, and faster manufacturer assembly over the previous. I additionally designed an adapter that clips into the battery slot which allows the shifter to be powered directly from an E-Bike accessory output port.