Sabertooth Motor Controller 25×2 Review

Sabertooth Motor Controller 25×2 Review

Sabertooth motor controller 25 x2

Sabertooth Motor Controller is absolutely perfect for robotic systems. I used these motor controllers at my Tsunami and Fusion sumo robot projects.  It has big power connectors.  I never experienced bad problems like Pololu motor controllers.

Sabertooth Motor controller has four interface methods:

  1. R/C mode : For using r/c receivers especially.
  2. Analog mode:  My preferred choice.
  3. Serial
  4. Packetized Serial

Some Notes About Motor Controller:

  • For analog mode control you have to add one capacitor (100nF) and resistor (1K-4,7K) to your interface. After you can control sabertooth by mcu’s hardware Pwm.
  • With built-in protection circuits sabertooth is like bulletproof.  Controller never heated in my projects.
  • It has also 5V regulator output at controller card. But I don’t recommend using at other circiuts.
  • For smaller space usage, I tried removing side aluminium heat sinks. But I couldn’t..:) So don’t try.
  • Don’t reverse battery connections!


  • Easy usage
  • Regenerative system adds extra fuel to batteries.
  • Big  terminals ensure firm connections.
  • Easy tuning by smd dipswitch.
  • Motor can drive all Maxon motors easily.


  • Expensive.
  • Having linear voltage regulator, If it had switching mode it can better. (Later models have)
  • Reverse battery protection absence.

Program Code:

For Analog mode control I am using Pic Mcu’s Hardware PWM channels (HPWM1 – HPWM2). It is very easy.

‘Motor Speed Declarations
DEFINE CCP1_BIT 2 ‘Hpwm 1 pin bit
DEFINE CCP2_BIT 1 ‘Hpwm 2 pin bit
DEFINE HPWM2_TIMER 1 ‘Hpwm 2 timer
DEFINE HPWM3_TIMER 1 ‘Hpwm 3 timer
HPWM 2, 255,16000   ‘Full Speed both channel
HPWM 1,255,16000
Pause 1000                      ‘ How much duration
HPWM 2, 60,16000 ‘ Less Speed (60/255)both channel
HPWM 1,60,16000

Codes are written in Picbasic language. here, you can find Sabertooth Motor controller. That model and higher current models are very popular among sumo robot makers.


Users who found this page were searching for:

  • used2x25 sabertooth motor controler in northern ontario on kijiji
  • sabertooth 25x2 motor controler on ebay
  • sabertooth 2 driver review
  • sabertooth 2x25 pwm independent motor control issues
  • sabertooth 25x2 over heating
  • Kelkoo sabertooth 2x25 a
  • sabertooth 25 x 2 motor control
  • sabertooth speed controller
  • sabertooth#
  • Sabertooth PWM
  • sabertooth 2x25 hooked up backwards
  • sabertooth 2x25 schematic
  • sabertooth 25x2 vergelijk
  • sabertooth motor controller enclosure
  • sabertooth simplified resistor
  • sabretooth 25x2 motor controller schematic
  • sabertooth simplified serial
  • sabertooth motor controller pros cons
  • sabertooth 2x2
  • sabertooth for sumo robot

Comment (1)

  • umut Reply

    Also I am using for my sumo robot project. I bought after reading this review thanks Jsumo.:) It’s good controller

    August 29, 2011 at 5:45 PM

Leave a Reply

Your email address will not be published. Required fields are marked *