Pololu QikMicro Dual Serial Motor Controller, 1A, 4.5-13.5V

• Dual Motor Controller - 1A, 4.5V to 13.5V
• Serial Interface
• 2.7V to 5.5V logic supply

The Pololu Qik 2s9v1 Dual Serial Motor Controller is Pololu's second-generation dual serial motor controller. The compact module allows any microcontroller or computer with a serial port (external RS-232 level converter required) to easily drive two small, brushed DC motors with full direction and speed control. It provides ultrasonic, 8-bit PWM speed control via an advanced, two-way serial protocol that features automatic baud rate detection up to 38.4 kbps and optional CRC error checking. Two status LEDs give visual feedback about the serial connection and any encountered error conditions, making debugging easy, and a demo mode allows easy verification of proper operation.

The Pololu Qik 2s9v1 Dual Serial Motor Controller is a small, inexpensive motor controller allows variable speed and direction control of two small, brushed DC motors using a simple serial interface, making it easy to add motors to your microcontroller- or computer-based project. The motor supply voltage range is 4.5 to 13.5 V; the continuous current per channel is up to 1A (3A peak). The logic supply can be as low as 2.7 V, allowing operation with modern microcontrollers running at 3.3 V.

Features

• High-frequency (ultrasonic) PWM to eliminate switching-induced motor shaft hum or whine
• A robust, high-speed communication protocol with user-configurable error condition response
• Visible LEDs and a demo mode to help troubleshoot problematic installations
• Reverse power protection on the motor supply (not on the logic supply)
• Simple bidirectional control of two DC brush motors; please see the user's guide for more information.
• Logic-level, non-inverted, two-way serial control for easy connection to microcontrollers or robot controllers.
• Optional automatic baud rate detection.
• Two on-board indicator LEDs (status/heartbeat and serial error indicator) for debugging and feedback.
• Serial error output to make it easier for the main controller to recover from a serial error condition.
• Jumper-enabled demo mode allowing initial testing without any programming.
• Optional CRC error detection eliminates serial errors caused by noise or software faults.
• Optional motor shutdown on serial error or timeout for additional safety.
• Supports daisy-chaining the qik to other qiks and Pololu serial motor and servo controllers, allowing the control of an almost unlimited number of motors with a single serial line.