Motor Controllers - Motor Mind C

The Motor Mind C

Single or Dual DC Motor Controller

• Control 10-24V brushed DC motors
• Maximum continuous current 4.0A
• 40 Pin DIP socket package
• Single or dual independent motor control options
• Over-current and over-temperature protection features
• Serial control of 10-bit PWM signal
• Alternative analog control (0-5VDC) of PWM signal
• Alternative R/C (1-2ms) pulse control of PWM signal

The Motor Mind C has been designed to function as a versatile DC motor control system for controlling one or two motors. The module is ideal for use in small robotics projects for controlling two-wheel axles. The motor connections may also be tied in parallel to control a single larger motor. The Motor Mind C comes in a 40-pin DIP package with motor connections, mode settings, and control inputs all accessed through this packaging.

Three modes of operation are available in the Motor Mind C. Each mode can be used to control one or two brushed DC motors. The current rating of the Motor Mind C is 2.5A with no cooling, and 4.0.A with cooling. Motor voltages ranging from 10-24V can be used with this product.

In serial mode the user has direct control over the motor speed and direction. When configured for two motors the motor speed and direction for each motor are controlled independently. The user can also modify the PWM step limit (1-255), the PWM dead-band, and brake mode (dynamic or free spinning). Various other registers may be read and displayed including the approximate operating current of both H-bridges on the Motor Mind C.

When set for analog control mode the user has direct control over the motor speed and direction. When configured for two motors the motor speed and direction for each motor can be controlled independently with separate control voltages. Voltage inputs from 0-5V are accepted. There is a dead-band located around 2.5V, with 0V being full speed reverse, and 5V being full speed forward.

In R/C control mode the user has direct control over the motor speed and direction. When configured for two motors the motor speed and direction for each motor can be controlled independently with separate R/C pulse signals. Pulse inputs from 0.5-2.5ms are accepted. There is a dead-band located around 1.5ms, pulses down to 1ms width provide proportional reverse speed control, and those up to 2ms provide proportional forward speed control. Pulses greater than 2ms but less than 2.5ms are considered full speed forward (see section on R/C Signal Control Mode for more details). Likewise, pulses less than 1ms but greater than 0.5ms are treated as full speed reversed. Pulses outside of this range, or no pulse in a 25ms period are treated like a 1.5ms pulse and cause the motor to stop.

Downloads

Motor Mind C Rev4 Datasheet		(212 Kb)
Motor Mind C Rev3 Datasheet		(120 Kb)
Motor Mind C Rev3 and Rev4 Comparison of Changes		(20 Kb)
Motor Mind C Analog Mode		(427 Kb)