## Tuesday, February 20, 2024

Make simple DC motor speed controller circuit diy, DIY dc speed controller

In this DIY DC Motor Speed Controller Tutorial, you'll learn the step-by-step process of making your own motor speed controller at home. With the help of some basic electronic components and a few tools, you can easily control the speed of your DC motor. We'll cover everything you need to know like selecting the right components, wiring the circuit, and testing it. This project is perfect for beginners who want to learn about electronics and motor control. With this video, you can save money and build your own custom motor speed controller. So, let's get started and make your own DC motor speed controller!

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Motors are everywhere and we see them in every application. From Drills to Locomotives, from RC car to lathe machine everywhere there are uses of motors.

But the most important characteristic of the motor is, the need to be controlled for a specific work is the speed of the motor.

Typically gears can be used to change speed, but sometimes it is not the solution. That time we need Electronic Control to control the speed of the motor.

The speed is related by the following equation

N = V - Ia Ra / kÃ˜

So speed can be varied by changing

Terminal voltage of the armature V.

External resistance in armature circuit Ra.

Flux per pole Ï†.

Armature resistance control method: This is the most common method employed. Here the controlling resistance is connected directly in series with the supply of the motor.

The disadvantage if the method is the power is wasted across the resistance. so it is a big no.

The second option is the terminal voltage variation.

We apply this here to control the speed. Variation is obtained by using a PWM signal

What is PWM?

Pulse-width modulation (PWM), is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off. This on-off pattern can simulate voltages in between full on (5 Volts) and off (0 Volts) by changing the portion of the time the signal spends on versus the time that the signal spends off. The duration of "on time" is called the pulse width. To get varying analog values, you change, or modulate, that pulse width. If you repeat this on-off pattern fast enough with an LED for example, the result is as if the signal is a steady voltage between 0 and 5v controlling the brightness of the LED.

Start by soldering two diodes in opposite phase with the pots two end terminal with aY shape structure given in the pictures

Solder the NE555 on the board

Solder the two screw terminal at two ends

Connect and Solder pin 4 and pin 8

Connect and solder pin 8 to VCC terminal

Solder the middle of the pot to pin 3

Solder the diodes to pin 6

Solder A 0.1 uF Cap to the pin 6 with GND

Connect pin 2 to pin 6 and solder

Solder a 100 uF electrolytic capacitor with VCC and GND

Solder pin 1 to Gnd

Connect a 10k resistance between VCC and pin 7

Connect the one end of the terminal to VCC and the other to MOS Drain

Connect a diode in reverse biased condition to the other terminal

Connect the gate to the pin 7

Connect the Source to GND

Connect pin5 and GND with a 0.1 uF Ceramic cap

The next task is to stick the pot to the board.

This is done by simply using a double sided tape.

Then I cut the tape to shape it with the potentiometer's back.

Now the work is to peel the tape's other side layer and attach it to the board.

My pot was a bit small compared to the knob.

SO here is a TIP for it.

Use a glue stick and fill the knob will glue first and then attach the knob.

This work is great.

This has been tested on all kinds of motor and it works pretty well,

There are lots of projects that can be built with this

Solder Fume extractor

Table top fan

POV Project

Make simple DC motor speed controller circuit diy, DIY dc speed controller

In this DIY DC Motor Speed Controller Tutorial, you'll learn the step-by-step process of making your own motor speed controller at home. With the help of some basic electronic components and a few tools, you can easily control the speed of your DC motor. We'll cover everything you need to know like selecting the right components, wiring the circuit, and testing it. This project is perfect for beginners who want to learn about electronics and motor control. With this video, you can save money and build your own custom motor speed controller. So, let's get started and make your own DC motor speed controller!

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Motors are everywhere and we see them in every application. From Drills to Locomotives, from RC car to lathe machine everywhere there are uses of motors.

But the most important characteristic of the motor is, the need to be controlled for a specific work is the speed of the motor.

Typically gears can be used to change speed, but sometimes it is not the solution. That time we need Electronic Control to control the speed of the motor.

The speed is related by the following equation

N = V - Ia Ra / kÃ˜

So speed can be varied by changing

Terminal voltage of the armature V.

External resistance in armature circuit Ra.

Flux per pole Ï†.

Armature resistance control method: This is the most common method employed. Here the controlling resistance is connected directly in series with the supply of the motor.

The disadvantage if the method is the power is wasted across the resistance. so it is a big no.

The second option is the terminal voltage variation.

We apply this here to control the speed. Variation is obtained by using a PWM signal

What is PWM?

Pulse-width modulation (PWM), is a technique for getting analog results with digital means. Digital control is used to create a square wave, a signal switched between on and off. This on-off pattern can simulate voltages in between full on (5 Volts) and off (0 Volts) by changing the portion of the time the signal spends on versus the time that the signal spends off. The duration of "on time" is called the pulse width. To get varying analog values, you change, or modulate, that pulse width. If you repeat this on-off pattern fast enough with an LED for example, the result is as if the signal is a steady voltage between 0 and 5v controlling the brightness of the LED.

Start by soldering two diodes in opposite phase with the pots two end terminal with aY shape structure given in the pictures

Solder the NE555 on the board

Solder the two screw terminal at two ends

Connect and Solder pin 4 and pin 8

Connect and solder pin 8 to VCC terminal

Solder the middle of the pot to pin 3

Solder the diodes to pin 6

Solder A 0.1 uF Cap to the pin 6 with GND

Connect pin 2 to pin 6 and solder

Solder a 100 uF electrolytic capacitor with VCC and GND

Solder pin 1 to Gnd

Connect a 10k resistance between VCC and pin 7

Connect the one end of the terminal to VCC and the other to MOS Drain

Connect a diode in reverse biased condition to the other terminal

Connect the gate to the pin 7

Connect the Source to GND

Connect pin5 and GND with a 0.1 uF Ceramic cap

The next task is to stick the pot to the board.

This is done by simply using a double sided tape.

Then I cut the tape to shape it with the potentiometer's back.

Now the work is to peel the tape's other side layer and attach it to the board.

My pot was a bit small compared to the knob.

SO here is a TIP for it.

Use a glue stick and fill the knob will glue first and then attach the knob.

This work is great.

This has been tested on all kinds of motor and it works pretty well,

There are lots of projects that can be built with this

Solder Fume extractor

Table top fan

POV Project