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This 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 1 A (3 A peak). The logic supply can be as low as 2.7 V, allowing operation with modern microcontrollers running at 3.3 V.
體積小又便宜的可變速及方向的雙軸馬達控制器。使用串列(Serial)訊號控制，使馬達可以方便地添加到您的微控制器或PC為基礎來控制。 電源電壓範圍為 4.5至13.5V ; 每軸的連續電流高達 1 A的（3A 峰值）。 邏輯電源可以低至2.7V，3.3V微控制器亦可操作。
Overview
The qik 2s9v1 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) or USB-to-serial adapter 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 improvements over the previous generation and competing products include:
- 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)
For a more advanced, higher-power version of this controller, please consider the qik 2s12v10. For a simpler carrier of the qik’s motor driver, please consider the TB6612FNG dual motor driver carrier, and for a robot controller based on the qik’s driver, please consider the Baby Orangutan and Orangutan SV-328 robot controllers and 3pi robot, which connect the TB6612 to a user-programmable AVR microcontroller.
Main Features of the Qik 2s9v1
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- Simple bidirectional control of two DC brush motors.
- 4.5 V to 13.5 V motor supply range.
- 1 A maximum continuous current per motor (3 A peak).
- 2.7 V to 5.5 V logic supply range.
- 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 allows 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 up to hundreds of motors and servos with a single serial line.
- Comprehensive user’s guide.
特點
●簡單的雙向控制的兩個直流有刷馬達。
●4.5 V至13.5 V供電範圍。
●1，每一個電機最大連續電流（峰值為 3）。
●2.7 V至5.5 V邏輯電源電壓範圍。
●Logic-level, non-inverted，雙向串列(se)控制，方便連接到微控制器或機器人控制器。
●可自動Baud rate檢測。
●兩個板上LED指示燈（狀態 /心跳和串行錯誤指示器）用於調試和反饋。
●Jumper-enabled demo mode 允許無需programming的初步測試。
●有串行錯誤輸出，使主控制器容易恢復。
●CRC錯誤檢測減少誤動作。
Specifications
| Motor channels: | 2 |
| Motor supply voltage: | 4.5 – 13.5 V |
| Continuous output current per channel: | 1 A |
| Peak output current per channel: | 3 A |
| Auto-detect baud rate range: | 1200 – 38400 bps |
| Fixed baud rate: | 38400 bps |
| Available PWM frequencies: | 31.5 kHz, 15.7 kHz, 7.8 kHz, 3.9 kHz |
| Logic supply voltage: | 2.7 – 5.5 V |
| Logic supply current: | < 15 mA |
| Reverse voltage protection?: | Y (on motor supply only) |
| Motor driver: | TB6612FNG |
Included Hardware
The qik ships with a 16×1 straight 0.100" male header strip, a 12×1 right angle 0.100" male header strip, and two red shorting blocks. This hardware offers several options when it comes to making connections to the qik.
For the most compact installation, wires can be directly soldered to the qik pins themselves. For less permanent connections, the 16×1 straight header strip can be broken into a 12×1 piece and two 2×1 pieces. The 2×1 pieces can optionally be soldered into the jumper pins, and the 12×1 header strip of your choice can be soldered into the qik control pins. This allows connections to the qik via custom-made cables that have female headers on them, or the qik can simply be plugged into a breadboard. Using the right angle header allows for a compact profile or for vertical mounting into a breadboard; using the straight header allows for breadboarding as shown in the picture above.
Sample Code
We have written a basic Arduino library for the qik dual serial motor controllers that makes it simple to interface these controllers with an Arduino. The library handles the details of serial communication with the qik, allowing two brushed DC motors to be controlled easily.
