The Solo 300 is an intelligent motor controller designed to control one brushed DC motor at 300 Amps continuous. It can be controlled from USB, RC radio, PWM, TTL serial, analog and microcontrollers such as Arduino or Raspberry Pi. 

The Solo 300 automatically supports 3.3V or 5V logic levels, travel limit switches, home switches, emergency stop switches, power supplies, braking systems and contactors. Power supplies can be used by enabling the built in voltage clamping control feature. A built-in switching mode BEC supplies 5VDC at up to 1.2 Amps for powering user devices. 

Brushed DC motors can be controlled in open or closed loop using position or velocity control modes. It features several built-in commands for controlling acceleration, deceleration, distance, speed, current sense, voltage limits and more. RC and analog control modes also include several user defined settings such as acceleration and decelerate speeds. 

Quadrature encoders with up to 19.6 million pulses per second are supported and can be auto tuned using Motion Studio which is a free downloadable application. In addition, a wide range of sensor inputs including potentiometers and absolute encoders are supported. The closed loop functionality creates absolute control over speed, velocity and direction regardless of load changes. 

The Solo 300 incorporates several protection features including temperature, current, over voltage and under voltage limits. The protection features are self monitoring and protect it from damage in any operating condition. Several user-definable settings such as maximum current limit, maximum and minimum battery voltages are provided for more refined control. 

The Solo 300's regenerative capabilities will charge a supply battery during slow down or breaking. It's advance circuitry can change direction during full throttle without damage and it has a LiPo cutoff mode to prevent battery damage.


Single Channel Continuous Current: 300A
Max Voltage: 60 VDC
BEC: 5 VDC @ 1.2A
Encoder input
Thermal Protection
Current Sense
User Selectable Peak Current
Battery Protection
Regenerative Braking
Over and Under Voltage Protection
Position and Velocity Control Modes

Control Via:
RC Pulse

99mm x 73mm x 30mm
Weight: 300 grams

User's Manual     

Motion Studio  

    Solo 300 High-Voltage Controller - $499      Quantity



Speed Adjuster

This speed adjuster plugs into the radio control inputs of the motor controllers. It is a quick and easy way to send control signals to the motor controllers without the need for an RC transmitter or receiver. Turn the knob to control the motors from full forward to full reverse or anywhere in between.

AmpFlow Speed Adjuster  -  $20      Quantity



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