l298n motor driver specification raspberry pi

Motor B can be controlled using the same method but applying HIGH or LOW to input 3 and input 4.Ĭontrolling 2 DC Motors – ideal to build a robot If you apply power the other way around: HIGH to input 1 and LOW to input 2, the motor will rotate backwards.If you apply LOW to input1 and HIGH to input 2, the motor will spin forward.Input 1 and input 2 control motor A, and input 3 and 4 control motor B.

The input pins control the direction the motors are spinning. Motor enabled: speed proportional to duty cycle However, note that for small duty cycles, the motors might not spin, and make a continuous buzz sound. The motor speed is proportional to the duty cycle.

If you send a PWM signal, you can control the speed of the motor.

If you send a LOW signal to the enable 1 pin, motor A turns off.If you send a HIGH signal to the enable 1 pin, motor A is ready to be controlled and at the maximum speed.The enable pins are like an ON and OFF switch for your motors. Now that you’re familiar with the L298N Motor Driver, let’s see how to use it to control your DC motors. You need to remove those jumper caps to control the speed of your motors. There are jumper caps on the enable pins by default. The input pins are used to control the direction of your DC motors, and the enable pins are used to control the speed of each motor. If you supply more than 12V, you should remove the jumperĪt the bottom right you have four input pins and two enable terminals. Jumper removed: you need to provide 5V to the +5V terminal. Jumper: jumper in place – uses the motors power supply to power up the chip.Acts as a 5V output if jumper is in place +12V: The +12V terminal is where you should connect your power supply.For example, you can use a bench power supply to test this tutorial. In this tutorial will be using 4 AA 1.5V batteries that combined output approximately 6V, but you can use any other suitable power supply. It’s important to note that despite the +12V terminal name, with the setup we’ll use here (with the jumper in place) you can supply any voltage between 6V and 12V. Note: if you supply more than 12V, you need to remove the jumper and supply 5V to the +5V terminal. However, if the jumper is in place, the chip is powered using the motor’s power supply and you don’t need to supply 5V through the +5V terminal. The +5V terminal is used to power up the L298N chip. The +12V terminal block is used to power up the motors. OUT1 and OUT2 at the left and OUT3 and OUT4 at the right.Īt the bottom you have a three terminal block with +12V, GND, and +5V. The motor driver has a two terminal block in each side for each motor.

L298n motor driver specification raspberry pi