Analog SimRacing-eBrake

thingiverse

I designed a compact analog ebrake for simracing which you can place on top of your table using suction cups. Parts list (may be incomplete): name | amount | needed for... M3x29 hex socket screws 3 grip ("Griffhälften_links/rechts") M3 washers 3 grip ("Griffhälften_links/rechts") M3 nut 3 grip ("Griffhälften_links/rechts") M3x15 countersunk screw 1 "Abdeckstutzen" on top of the grip M3x15 hex socket screws 2 fixing "Griff" on "Oberteil" M3x20 hex socket screws 2 fixing "Griff" on "Oberteil M3 washers 4 fixing "Griff" on "Oberteil M3 nut 4 fixing "Griff" on "Oberteil WinHook suction-cups 4 you may be able to use other suction-cups eBrake_Basis 1 its the whole base of the eBrake Hebelarm_50mm 2 levers at the back end of the "eBrake_Basis" Hebelarm_30mm 1 front right lever on the "eBrake_Basis" Hebelarm_30mm_Poti 1 front left lever that will drive the potentiometer Zahnrad_Poti 1 gear that will be pressed on the potentiometer eBrake_Oberteil 1 upper part that fits the levers Hebel 1 goes on top of the "eBrake_Oberteil" Griffhälfte_links 1 left side of the grip Griffhälfte_rechts 1 right side of the grip Abdeckstutzen 1 goes on top of both grips (just a design-thing) 300°-Potentiometer 1 electronics-housing - see photo Arduino Pro Micro 1 electronics-housing - see photo Elektronikgehäuse 1 is the electronics-housing, on top of eBrake_Basis Deckel_Elektronikgehäuse 1 cover for the electronics-housing Poti_Fixierblock 1 locates the potentiometer inside electronics-housing Arduino_Fixierblock 1 locates the Arduino-board inside electronics-housing M3x11 hex socket screw 2 fixes the cover for electronics-housing M3x15 hex socket screw 4 fixes "Elektronikgehäuse" on top of eBrake_Basis M3 nut 4 fixes "Elektronikgehäuse" on top of eBrake_Basis Gummipuffer 2 bumper for the levers (best printed in TPU!) M2,5x15 hex socket screw 2 fixes the spring M2,5 nut 2 fixes the spring M2,5 washer 1 fixes the spring spring 5/32"X 3-1/8" 1-2 between "eBrake_Basis" and "eBrake_Oberteil" rod Ø8x39mm 2 used in the "eBrake_Oberteil" rod Ø8x49mm 1 used in the back "eBrake_Basis" rod Ø8_56mm 1 used in the front "eBrake_Basis" 688 8x16x5 bearings 8 two in every lever It was designed for stuff I had laying around so maybe you need some tweaking to fit parts you will buy. Keep in mind to print the bumpers (Gummipuffer) best in TPU. They are necessary to regulate the moving-angle of both front levers to 90 degrees. The gearset is designed as a 3,34:1 ratio to convert 90°-lever-movement to 300°-potentiometer-movement. If you do not use the bumpers, levers might move in a larger angle than 90° and you might hit the limits of your potentiometer with excessive drifting-force. ;) Also keep in mind to carefully insert the potentiometer into the electronics-housing while pressing the potentiometer-gear onto the potentiometer-rod. At this point you have to double check the turning direction of both potentiometer and front left lever (one with the large gear) fit each other! Otherwise you have to disassemble potentiometer-gear, turn the potentiometer to the right 0°-limit and fit again. Inspired by: https://www.youtube.com/watch?v=kv0FTpRLFMY In this video you will also find the wiring of the ebrake. Script for the Arduino: https://github.com/AM-STUDIO/Analog-E-Brake Note: Due to regulations of the library it has to be an Arduino Pro Micro (or clone). A Arduino Nano (for example) will not be compatible. If you achieve values of 100% eBrake when your eBrake is in its normal position and 0% if you pull it to the 90°-limit, you have to reverse the potentiometer-value in the Arduino script or inside your racing game settings. After designing, printing, setting up the arduino, soldering all wires (note: there is very little space in the housing so better check cable lengths and test-assemble before soldering!), building everything it really is a nice plug-and-play-solution for simracing! fun fact: Grips are designed to be fitted with self-sewed grips where the fold fits between the two parts of the grip. ;) My wife sewed a nice black alcantara grip with red stitches for my eBrake! *couplegoalsachieved*