Archive for category: Motor Control Wiring

Stepper Motor Generator Diagram

Motor Control Wiring | By: Diagram mania

Stepper motors are a subject that keeps recurring. This little circuit changes a clock signal (from a square wave generator) into signals with a 90-degree phase difference, which are required to drive the stepper motor windings. The price we pay for the simplicity is that the frequency is reduced by a factor of four. This […]

Rolling Shutter Motor Control

Motor Control Wiring | By: Diagram mania

An electrically operated rolling shutter usually has a standard control panel with a three-position switch: up, down and stop. If you would like to automate the opening and closing with a time controlled switch, a few additional wires will have to be connected. Typically, the controls are implemented as indicated in the schematic ‘Normal Situation’. […]

Maximite Stepper Motor Interface

Motor Control Wiring | By: Diagram mania

This simple circuit and program listing allows the Maximite microcomputer (SILICON CHIP, March-May 2011) to control a stepper motor. It could be expanded to allow for the control of multiple motors, with four of the Maximite’s external I/O pins used to control each motor with identical driver circuits. A ULN2003 Darlington transistor array (IC1) switches […]

PWM Dimmer/Motor Speed Controller

Motor Control Wiring | By: Diagram mania

This is yet another project born of necessity. It’s a simple circuit, but does exactly what it’s designed to do – dim LED lights or control the speed of 12V DC motors. The circuit uses PWM to regulate the effective or average current through the LED array, 12V incandescent lamp (such as a car headlight […]

Bipolar Stepper Motor Control

Motor Control Wiring | By: Diagram mania

First, we want to explain how such a controller works and what’s involved. A bipolar motor has two windings, and thus four leads. Each winding can carry a positive current, a negative current or no current. This is indicated in Table 1 by a ‘+’, a ‘–‘ or a blank. A binary counter (IC1) receives […]

DC Motor Reversing Circuit Circuit

Motor Control Wiring | By: Diagram mania

Description: A DC motor reversing circuit using non latching push button switches. Relays control forward, stop and reverse action, and the motor cannot be switched from forward to reverse unless the stop switch is pressed first. Circuit diagram Notes: At first glance this may look over-complicated, but this is simply because three non-latching push button […]

Simple DC motor PWN speed control Circuit

Motor Control Wiring | By: Diagram mania

The 555 is ubiquitous and can be used as simple PWM speed control Circuit diagram Circuit Explaination: The 555 Ic is wired as an astable and the frequency is constant and independent of the duty cycle, as the total resistance (R charge + R discharge, notice the diode) is constant and equal to 22Kohm (givin […]

Unipolar Stepper Motor Controller Circuit

Motor Control Wiring | By: Diagram mania

This is a very good integrated circuit. There is no need for any external glue logic to drive the circuit, there is only 2 pins to drive the motor, one for controlling the direction and the other to trigger the stepping pulses. It provides a very compact design that drives 5 or 6 or 8 […]

Stepper Motor Controller Circuit

Motor Control Wiring | By: Diagram mania

I found this circuit in my files. I don’t know where it came from, but it looks like I photocopied it from somewhere years ago. I have been told that it came from "The Robot Builder’s Bonanza", by Gordan McComb. Anyway, I thought that it should be fairly useful, so I decided to post it […]

Pulse Width Modulation DC Motor Control Circuit

Motor Control Wiring | By: Diagram mania

Often, people attempt to control DC motors with a variable resistor or variable resistor connected to a transistor. While the latter approach works well, it generates heat and hence wastes power. This simple pulse width modulation DC motor control eliminates these problems. It controls the motor speed by driving the motor with short pulses. These […]