TB6612FNG Dual Motor Driver This tiny board is an easy way to use Toshiba’s TB6612FNG dual motor driver, which can independently control two bidirectional DC motors or one bipolar stepper motor. A recommended motor voltage of 4.5 – 13.5 V and peak current output of 3 A per channel (1 A continuous) make this a great motor driver for low.
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Sony vaio xloud drivers for mac. To control one or two DC motors is quite easy with the L298N H-bridge module. First connect each motor to the A and B connections on the L298N module.
If you’re using two motors for a robot (etc) ensure that the polarity of the motors is the same on both inputs. Otherwise you may need to swap them over when you set both motors to forward and one goes backwards!
Next, connect your power supply – the positive to pin 4 on the module and negative/GND to pin 5. If you supply is up to 12V you can leave in the 12V jumper (point 3 in the image above) and 5V will be available from pin 6 on the module.
This can be fed to your Arduino’s 5V pin to power it from the motors’ power supply. Don’t forget to connect Arduino GND to pin 5 on the module as well to complete the circuit. Now you will need six digital output pins on your Arduino, two of which need to be PWM (pulse-width modulation) pins.
PWM pins are denoted by the tilde (“~”) next to the pin number, for example in the image of the Arduino Uno's digital pins.
Finally, connect the Arduino digital output pins to the driver module. In our example we have two DC motors, so digital pins D9, D8, D7 and D6 will be connected to pins IN1, IN2, IN3 and IN4 respectively. Then connect D10 to module pin 7 (remove the jumper first) and D5 to module pin 12 (again, remove the jumper).
The motor direction is controlled by sending a HIGH or LOW signal to the drive for each motor (or channel). For example for motor one, a HIGH to IN1 and a LOW to IN2 will cause it to turn in one direction, and a LOW and HIGH will cause it to turn in the other direction.
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However the motors will not turn until a HIGH is set to the enable pin (7 for motor one, 12 for motor two). And they can be turned off with a LOW to the same pin(s). However if you need to control the speed of the motors, the PWM signal from the digital pin connected to the enable pin can take care of it.
This is what we’ve done with the DC motor demonstration sketch. Two DC motors and an Arduino Uno are connected as described above, along with an external power supply. Then enter and upload the following sketch:
Pololu Motor
So what’s happening in that sketch? In the function demoOne() we turn the motors on and run them at a PWM value of 200. This is not a speed value, instead power is applied for 200/255 of an amount of time at once.
Then after a moment the motors operate in the reverse direction (see how we changed the HIGHs and LOWs in thedigitalWrite() functions?). To get an idea of the range of speed possible of your hardware, we run through the entire PWM range in the function demoTwo() which turns the motors on and them runs through PWM values zero to 255 and back to zero with the two for loops.
Finally this is demonstrated in the video on this page – using our well-worn tank chassis with two DC motors.
This is a library for anArduino-compatible controller thatinterfaces with thePololu DRV8835 Dual Motor Driver Shield for Arduino.It makes it simple to drive two brushed, DC motors.
Getting started
Hardware
ThePololu DRV8835 Dual Motor Driver Shield for Arduinocan be purchased on Pololu's website. Before continuing, carefulreading of the product page is recommended.
Compatible Arduino boards
This shield should work with all Arduino boards and clones that behavelike a standard Arduino board. We have specifically tested this shield(using this Arduino library) with:
Arduino Uno R3
Arduino Leonardo
Arduino Mega 2560
Arduino Due
Arduino Duemilanove (ATmega328P)
This library configures Timer 1 on the Uno R3, Leonardo, andDuemilanove to generate a 20 kHz PWM frequency for the motors. Thelibrary uses analogWrite on any board that does not use an ATmega168,ATmega328P or ATmega32U4. On the Mega 2560 and Due, analogWritegenerates 489 Hz and 1 kHz PWM frequencies, respectively, with thedefault timer configuration.
Software
If you are using version 1.6.2 or later of theArduino software (IDE), you can usethe Library Manager to install this library:
In the Arduino IDE, open the 'Sketch' menu, select 'Include Library', then'Manage Libraries..'.
Search for 'DRV8835MotorShield'.
Click the DRV8835MotorShield entry in the list.
Click 'Install'.
If this does not work, you can manually install the library:
Download thelatest release archive from GitHuband decompress it.
Rename the folder 'drv8835-motor-shield-xxxx' to 'DRV8835MotorShield'.
Drag the 'DRV8835MotorShield' folder into the 'libraries' directory inside yourArduino sketchbook directory. You can view your sketchbook location byopening the 'File' menu and selecting 'Preferences' in the Arduino IDE. Ifthere is not already a 'libraries' folder in that location, you should makethe folder yourself.
After installing the library, restart the Arduino IDE.
Example program
An example sketch is available that shows how to use the library. Youcan access it from the Arduino IDE by opening the 'File' menu,selecting 'Examples', and then selecting 'DRV8835MotorShield'. Ifyou cannot find these examples, the library was probably installedincorrectly and you should retry the installation instructions above.
Demo
The demo ramps motor 1 from stopped to full speed forward, ramps downto full speed reverse, and back to stopped. Then, it does the samewith the other motor.
Documentation
void setM1Speed(int speed) Set speed and direction formotor 1. Speed should be between -400 and 400. The motors brake at 0speed. Positive speeds correspond to motor current flowing from M1Ato M1B. Negative speeds correspond to motor current flowing from M1Bto M1A.
void setM2Speed(int speed) Set speed and direction formotor 2. Speed should be between -400 and 400. The motors brake at 0speed. Positive speeds correspond to motor current flowing from M2Ato M2B. Negative speeds correspond to motor current flowing from M2Bto M2A.
void setSpeeds(int m1Speed, int m2Speed) Set speed anddirection for motor 1 and 2.
void flipM1(bool flip) Flip the direction meaning of thespeed passed to the setSpeeds function for motor 1. The defaultdirection corresponds to flipM1(false) having been called.
void flipM2(bool flip) Flip the direction meaning of thespeed passed to the setSpeeds function for motor 2. The defaultdirection corresponds to flipM2(false) having been called.
Version history
2.0.0 (2016-08-18): Updated library to work with the Arduino Library Manager.
1.0.1 (2014-08-15): Fix pin initializations so the Arduino Due doesn't drive the motors when the sketch starts.