How to connect dc motor to Arduino
A 5 volt high it’ll allow current to pass through the MOSFET and is also connected to digital pwm pin 9, which is our pulse width . Modulare, and this allows us to vary the duty cycle , we’re actually putting out from 0 la 100 ieșire. So the right pin of the MOSFET is the drain . This is where the current exits and we’re gon na have the current exit into our DC motor using the green wire . Next up top , we have the other side of the DC motor another green wire . This is connected to the positive Y of the 9 volt battery because we are going to power the Arduino using the battery the same battery , then we’re also gon na connect the 9 volt battery to the VN pin on the Arduino , using the second red wire coming Out of the screen seen here so that’s , just gon na go into our VN , pin and provide power to the Arduino , so I’m gon na go through my code in a second , but if you’re , just looking for a basic turn on or off command . This is all the code . You need right here for pwm pin 9. bine, so let’s take a look at the code . Now we’re gon na want to add a couple integers here , so the first integer is gon na be for the motor and we’re gon na set that on pwm pin 9 next we’re gon na make an integer 4x and just set it to 0.
For now now , we’ll need to look inside the loop and we’re gon na make a while statement . So a while statement has a simple condition which we’re gon na set as X , less than 255, which is the maximum output for the pwm pin . So all we’re gon na do this . Loop is every time it cycles , we’re gon na set X to itself plus 15. So each time X will increase . De 15, then we’re gon na make an analog , write command to the motor and feed that the variable X , which will be an integer . Now then , we’re gon na delay by one second or 1000 milliseconds make another analog write command , even though we are in a digital pin but we’re gon na set the motor so pin 9 la 0, so we’re gon na turn off the pwm pin to set it To 0 volți, then we’re gon na delay about 1. Second again and this whole loop will repeat itself a few times so 17 times in total . So the loop will cycle , and every time X is less than 255 – is going to increase X by 15 and run through the same process and we’re . Also gon na want to look at what X is in the serial port , so we’re gon na add a serial dot println command . So we can see the variable X and println recall just adds a newline every time , the output and then because we’re doing that we’re gon na need to initialize our serial port .
