Proton Servo (Steel Gears, 180° Rotation, Speed Ratio)

SKU: Build System: goBILDA

The goBILDA® Proton Servo is a standard size servo offering essential servo function on a budget. There are two versions of the Proton: ‘Torque’ and ‘Speed’. Though their gear ratios differ, they are identical in every other way. The ‘Speed’ version sacrifices torque to optimize its performance in higher speed applications. 

While makers of all levels can appreciate the steel gears that form the Proton’s core, the nucleus of the design is beginner-friendly accessibility! That’s why the Proton’s set of features has been pared-down to the bare essentials:

  • 180° of rotation to turn your ideas into reality
  • 0.08 sec/60° (125RPM)—blazing speed for projects that just can’t wait
  • an H25T spline, which you can use to mount all kinds of rotating components found throughout the goBILDA® ecosystem and the wider hobby market

Looking to make your start in robotics, or provide one for someone else? The Proton can be a fantastic first step for implementing servo solutions in novice projects without straining your wallet!

How Far Will This Servo Rotate?

The answer to this question is partially dependent on what you are using to control the servo.
Click for a quick video explanation.

With an Average Radio System:
Your average transmitter and receiver will output a relatively narrow PWM signal range.

Radio System + Travel Tuner:
Adding a Servo Travel Tuner to your radio system setup will allow you to achieve wide PWM signal ranges.

Wide Signal Controllers:
Controllers such as the Servo Commander, Arduinos, and Raspberry Pi servo hats can usually send a wide signal.

Tech Tips






Weight 52g
Output Shaft Style H25T Spline
Voltage Range 4.8V - 6.0V
No-Load Speed (4.8V) 0.10 sec/60° (100RPM)
No-Load Speed (6.0V) 0.08 sec/60° (125RPM)
Stall Torque (4.8V) 30 oz-in (2.16
Stall Torque (6.0V) 40 oz-in (2.88
No-Load Current (4.8V) 80mA
No-Load Current (6.0V) 90mA
Stall Current (4.8V) 800mA
Stall Current (6.0V) 1,000mA
Max PWM Range 600-2400μsec
Pulse Amplitude 3-5V
Deadband Width 5µsec
Motor Type Brushed DC
Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearing
Gear Material Steel
Wire Length 11.81" (300mm)
Wire Gauge 24AWG
Connector Type 3-Pos TJC8 Servo Connector [MH-FC]
Servo Size Standard
Direction with Increasing PWM Signal Clockwise
Travel per μsec 0.105°/μsec
Max Rotation 189°

This website uses cookies to ensure you get the best experience on our website