Universal Derailleur Actuator (bottle holder mountable)

thingiverse

Universal Bicycle Actuator: A Game-Changing Innovation This ultra-powerful servo actuator is designed to fit most standard bottle holder mounts, making it compatible with almost any bicycle frame. Many frames boast two bottle holder mounts, allowing you to control both the front and rear derailleurs simultaneously. For optimal performance, I highly recommend pairing this actuator with a gearmotor operating at 6-10 rpm and a 6V supply voltage. The high-torque motor featured in the demonstration is self-locking, ensuring zero current consumption during standby periods. To unlock the full potential of this unit, you'll need to integrate a 5kOhm potentiometer into your setup. This will enable you to repurpose an old RC servo motor's circuit board (specifically designed for 6V systems) and control the actuator using a PWM signal generated by an Arduino. Seize the opportunity to revolutionize your cycling experience by automating gear shifting based on wheel or crank speed. For added safety during nighttime rides, print this actuator with transparent red filament and attach an LED light (accommodated in a 5mm hole below the gear motor) to create a dynamic warning system.