The module is based on Texas Instruments DRV8801 allow you to control one DC motor. The motor can be powered with any voltage from 8 V to 36 V with a continuous current consumption up to 1 A, short-term (within seconds) to 2.8 A. Before use, we highly recommend you familiarizing yourself with the documentation system DRV8801. For lower supply voltages we have also dual channel modules DRV8833 and DRV8835.
In a typical application, simply connect the two lines of control: selection of rotation direction DIR( in the documentation called PHASE) and the speed control PWM (to ENABLE documentation). Default on-Board PWM signal is matched to the mass, and so the driver is disabled. Unless you need to use to adjust the speed of rotation must be specified at the PWM output state is high (logical unit).
Conclusion-the BREAK (in the documentation is referred to as MODE1) determines how the engine will behave at the zero cycle of the PWM (logical zero). By default, BREAK is chosen to power), in this case, if the PWM output is specified as low engine slows down dramatically (the insights are closed). Otherwise (BREAK in the low state), the engine will move freely (coasting). The options available are shown in the table below.
|PWM||1||1||PWM (H/L)||L||momentum forward/|
speed PWM %
|PWM||0||1||L||PWM (H/L)||the revs ago |
speed PWM %
|L||X||1||L||L||Stop, the outputs connected to ground|
|PWM||1||0||PWM (H/OPEN)||PWM (L/OPEN)||forward/|
speed PWM %
|PWM||0||0||PWM (L/OPEN)||PWM (H/OPEN)||ago|
speed PWM %
outputs are disabled
H - high, L - low, OPEN - output not connected
|The motor supply voltage is in the range 8V - 36V|
|GND||The potential of mass of the system|
|VDD||Voltage logical parts. The output is used to service the terminal podciągających and contact FAULT, BREAK and SLEEP. System DRV8801 has its own, built-in voltage regulator.|
|OUT+||Outlet + for connection to a motor terminal.|
|OUT-||Output for connection to a motor terminal.|
|DIR/ PHASE||A logical input that determine the direction of rotation of the engine. Default not active.|
|Logic for adjusting the speed of rotation. To this conclusion you need to connect the PWM signal. Default in the low state.|
|Entrance-puzzle defines how the engine will behave at the zero cycle of the PWM. Default in the high state at zero cycle of the PWM engine brakes.|
|SLEEP||The logic switch system to sleep after a feed low position. Default in the high state.|
|FAULT||A logic output indicates the error as low. Default in the high state.|
|Analog output allows to measure the current, which is consumed by the engine with an accuracy of 0.5 V 1A.|
The system provides the driver and necessary passive components for proper operation. Diagram of the electronic available in the figure below.
The module circuit DRV8833
Video describing the work of bridge H - driver DC motors.
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