7+1 speed H-Shifter

thingiverse

Since my old H-shifter has stopped working, I've decided to design a new one. First, I created a wooden version using scraps from around the house and came up with this: https://www.youtube.com/watch?v=763-1WVAYfk It's not a pretty sight, but it works and the dimensions are spot on, so it was a good starting point. To make this project work, you'll need the following: A fork that's identical to this one: https://www.tme.eu/gb/details/gn751-6-12-m6-b/joints/elesa_ganter/gn-751-6-12-m6-b/ You can also print one if you like, but I had this lying around so I used it. Some M6 threaded rods and nuts, as well as some M2 threaded rods and 4 nuts. Microswitches - I used these ones for the design: https://www.amazon.co.uk/Cylewet-25Pcs-Switch-Arduino-CLW1073/dp/B073XH5TL6/ref=sr_1_1?ie=UTF8&qid=1522524917&sr=8-1&keywords=microswitches A double roller catch that you might need to position the holes for mounting on the "core" part, along with 3mm screws to attach them. An electronic board - I use one from Leo Bodnar: http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=94&products_id=183&zenid=637d4a8e757a382eedea23c1651af87c A rubber band to keep everything in the center position. Later, I'll add different-sized brackets to mount various types of microswitches. I haven't printed it yet, but I'll update with pictures to help with assembly. To assemble the shifter, you need to print one of each component except for the brackets and side. From the bracket A, you'll need 4 pieces; from the bracket B left and right, you'll need 2-2 pieces; and from the side, you'll need 2 pieces. UPDATE1: I printed the core.stl part, and the fork had a pretty tight fit, so I widened the inside to allow for some play. You can see a picture of the assembled part now. There are also some mounting holes on the baseplate. UPDATE2: I managed to assemble the brackets and microswitch. It's not easy to assemble it because of the small nuts and tight spaces. When I have some time, I'll design a better bracket and spacers to make it easier. UPDATE3: I deleted the old brackets, so the assembly is a bit easier now. I repositioned the holes on the core.stl, so they're in the middle of the assembly now. UPDATE4: strategolie made an Arduino program that can be used for this shifter - you can find it on the following link. Thank you very much for this!