- #L298n motor driver connection with arduino how to
- #L298n motor driver connection with arduino drivers
So for example, if we use a 12V power supply, the voltage at motors terminals will be about 10V, which means that we won’t be able to get the maximum speed out of our 12V DC motor. We can note here that this IC makes a voltage drop of about 2V. In this case the 5V pin will be used as input as we need connect it to a 5V power supply in order the IC to work properly. But if the motor voltage is greater than 12V we must disconnect the jumper because those voltages will cause damage to the onboard 5V regulator. If the motor supply voltage is up to 12V we can enable the 5V regulator and the 5V pin can be used as output, for example for powering our Arduino board. The module have an onboard 5V regulator which is either enabled or disabled using a jumper. This depends on the voltage used at the motors VCC. The module has two screw terminal blocks for the motor A and B, and another screw terminal block for the Ground pin, the VCC for motor and a 5V pin which can either be an input or output. Let’s take a closer look at the pinout of L298N module and explain how it works. The module can drive DC motors that have voltages between 5 and 35V, with a peak current up to 2A. The L298N is a dual H-Bridge motor driver which allows speed and direction control of two DC motors at the same time.
#L298n motor driver connection with arduino drivers
There are many DC motor drivers that have these features and the L298N is one of them. So if we combine these two methods, the PWM and the H-Bridge, we can have a complete control over the DC motor. By activating two particular switches at the same time we can change the direction of the current flow, thus change the rotation direction of the motor. An H-Bridge circuit contains four switching elements, transistors or MOSFETs, with the motor at the center forming an H-like configuration. On the other hand, for controlling the rotation direction, we just need to inverse the direction of the current flow through the motor, and the most common method of doing that is by using an H-Bridge. Note: Arduino GND and the motor power supply GND should be connected together. The low power Arduino PWM signal switches on and off the gate at the MOSFET through which the high power motor is driven. So depending on the size of the motor, we can simply connect an Arduino PWM output to the base of transistor or the gate of a MOSFET and control the speed of the motor by controlling the PWM output. The average voltage depends on the duty cycle, or the amount of time the signal is ON versus the amount of time the signal is OFF in a single period of time.
PWM, or pulse width modulation is a technique which allows us to adjust the average value of the voltage that’s going to the electronic device by turning on and off the power at a fast rate. We can control the speed of the DC motor by simply controlling the input voltage to the motor and the most common method of doing that is by using PWM signal.
#L298n motor driver connection with arduino how to
We well take a look at some basic techniques for controlling DC motors and make two example through which we will learn how to control DC motors using the L298N motor driver and the Arduino board. In this Arduino Tutorial we will learn how to control DC motors using Arduino.