https://wiki.dfrobot.com/7A_Dual_DC_Motor_Driver_SKU__DRI0041


Existing:

This is an ultra small Dual DC motor driver for some room limited projects. UVLO (Under Voltage Latch-Out) features a safe guard for your system. It is very considerate to own an Photo Coupler isolation for all the signals in case of that the motor's Reverse Current would interfere the control signals. Besides all, all the interfaces includes ESD (electro-static discharge) protection.

Correction:

This is an ultra small dual DC motor driver for space limited projects. It features a UVLO (Under Voltage Lock Out) circuit, ESD protection, and opto-isolated inputs. The opto-isolated inputs prevent motor power from damaging or interfering with your control circuit.

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Existing:

 Output Channel: 2
 
Correction:
 Output Channels: 2
 
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Existing:
  Control signal current: 3 ~ 11 mA (Each route)

Correction:
  Control signal current: 3 ~ 11 mA (per input)

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Existing:
  
 To protect your motor, before switching the motor steering direction, make sure firstly to BRAKE motor by setting IN1 - 0 & IN2 - 0, especially when the PWM was set as 100%, full speed. And the suggestion time to brake is >0.1S, depending on your motor.
 
Correction:

  To protect your motor, before switching the motor drive direction, first BRAKE the motor by setting IN1 = 0 & IN2 = 0. This is especially important when the PWM is set to 100% (full speed). The suggested braking time is >0.1sec, depending on your motor.
  

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Existing:

 When the microcontroller operation voltage is 5V/3.3V, then please connect the reference voltage 5V/ 3.3V from the microcontroller. Or you will fail to control motors.
  
Correction:

 This signal is a reference that must be set to the same power supply that your microcontroller operates on. Connect this to the 3.3v or 5v power supply used by the controller.
 

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Existing:

This tutorial will cover how to use PWM to control a motor using the shield. Do the wiring according to the Connection Diagram below, and then upload the sample code below to the Arduino card, here we use a arduino UNO as the controller, you could see your motor run forward for 3 second and then run reversely for another 3 seconds and repeat this behavior then.


Correction:

This tutorial will cover how to use PWM to control a motor using the shield. Do the wiring according to the Connection Diagram below, and then upload the sample code below to the Arduino board. Here we use a arduino UNO as the controller, you should see your motor run forward for 3 seconds and then run reverse for another 3 seconds and then repeat.


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Existing:

The backside of the driver, as right-hand picture shows, that its conducting layer can be very wide, so you should take some measurements to ensure it won't short-circuit, like applying 1mm layer conductive epoxy or any other similar materials.

Correction:
The back of the driver board has some large bare traces. It is important to make sure that these do not get shorted out against conductive surfaces of your project. Please measure carefully and if needed, apply 1mm of non-conductive epoxy to protect the board.

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Existing:
You may find that the connector is designed as pluggable type to adapt with Male or Female wires.

Correction:
The connectors are designed to be pluggable. This allows you to attach wires with male or female terminations.

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Keep up the good work. I love your products!

  Rue Mohr.