PIC PWM Motor Control

This video demostrate how to control the motor speed by Pulse Width Modulation with the help of PIC microcontroller. Source from "123 PIC Microcontroller Experiments For The Evil"
Genius
Myke Predko"

Category:

Science & Technology

Tags:

• DIY
• PIC
• PWM
• MOTOR
• SPEED
• CONTROL.

[SAGUTRIC]

I am using PIC assemble language to compile the program. Good luck. Cheers.

[TommeyLeeReed]

the h-bridge is ok,but too many mosfet needed.

use a relay its cheaper and works very well.

[SAGUTRIC]

Hi. I agreed with you the relay with 2PDT will do the job. But the relay is mechanical solution and you will have either forward or reverse direction only. Your motor will give way easily if you switch the direction at high speed. No speed control can be achieve as well. My circuit is more flexible in the sense that i can control the direction and speed by PWM which is more efficient. Thanks.

[ldom2244]

you can use a relay for switching the direction and a mosfet to sink the current given to the relay there having a cheaper solution that also has pwm

[SAGUTRIC]

OK. You also have the point. Cheers.

[chemistrycoolguyscom]

how did you did what have you used to make it what parts are those? can you please tell me the instructions how will is suppose to learn all this i started electronics now. plz reply

[SAGUTRIC]

Hi. I would recommend you read "123 PIC Microcontroller Experiments For The Evil Genius By Myke Predko"  Cheers

[FJSchrank]

if you need to reverse the motor or switch it but not control the speed relays are fine, you only use PWM to adjust the average power output using duty cycle. 50% duty means half the time it's off and half it's on, by doing this as a high enough freqency the switching is transparent and the load averages it out.

[FJSchrank]

7-11 mOhm RDS-on for the STP75NS04Z

[FJSchrank]

when building a high-current motor controller with PWM don't use the IRF510 (mosfet from radioshack), they generate way too much heat. ST sent us a lot of samples and after evaluating the MESH Overlay Power III mosfet like stp75ns04z (80amp), you wouldnt believe the difference, virtually no heat at 4amps+. little energy wasted in switching even at 3.8+KHz. The Power III mosfets designed for power tools, etc and is even internally clamped for protection. don't even need a flyback diode.

[LeoDheLion]

I'm doing the motor control with PWM input to PIC, from flight Simulator.

For example, less than 1ms will move the motor to the left, 1 ms will be the stop position and more than 1ms will move the motor to the right. Let say, PWM is now 1.5 ms and if it changes to 1.3ms, i have to reverse the motor direction too.

Do you have any idea about it and may i request you to give me some ideas in programming part too :D?

PLS reply asap, it's very impt to me, it's my sch project. :D thanks

[eTh0maz]

whats the PWM frequentie?

[simulation17]

where did the motor come out of?

[MacsCanfly]

cute little motor, what did you use for the speed control?