A DC motor controller with control LEDs

Boris Landoni writes about a new open source project a DC motor controller with control LEDs: It can be controlled through logic levels to set the speed and the direction of the rotation of CC brushed motors and stepper motors; outputs have LEDs indicating the rotation direction. The circuit board we are presenting this time is […]

App note: Linear speed control of stepper motor

An app note (PDF!) from Atmel on Linear speed control of stepper motor: This application note describes how to implement an exact linear speed controller for stepper motors. The stepper motor is an electromagnetic device that converts digital pulses into mechanical shaft rotation. Many advantages are achieved using this kind of motors, such as higher simplicity, since no […]

FPGA : RC Servo and Stepper motor control in Verilog

Trandi blogged about his RC servo and stepper motor project.  He writes: For those interested in reproducing this example: The board is called “EP2C5 Mini Board” and has a EP2C5T144C8 Cyclone II FPGA on it I used a standard, 9grams micro RC Servo I used a 28BYJ-48 stepper motor and it’s driver (you can purchase these […]

LMD18245 base Microstep motor driver

In this video Dilshan Jayakody demonstrates his open hardware project the LMD18245 micro-step stepper motor driver: This article describe the LMD18245 and PIC16F877A base 16 step bipolar stepper motor driver which is design to work with 12V 18º bipolar stepper motors. In this design we use pair of LMD18245 DMOS full bridge motor drivers to control 2 phases […]

Bipolar stepper motor driver circuit with LMD18245

Viktor blogged about his bipolar stepper motor driver based on Texas Instuments’ LMD18245 build: After extensive research on the internet I decided to make a bipolar stepper motor driver based on Texas Instuments’ LMD18245, which is a 3A, 55V DMOS Full-Bridge Motor Driver. It incorporates all the circuit blocks required to drive and control current in a […]

Stepper motor bluetooth serial driver (Attiny85 & L293D)

Trandi blogged about his Stepper motor bluetooth serial driver project: How to put together a simple bluetooth driver for a nice little stepper motor (Mitsumi M35SP-11HPK) that I salvaged from an old Canon printer. It uses a small Attiny85 (the more I use them the more I love them ! :) ) programmed in Arduino, […]

Magnetic loop antenna controlled by Arduino

This video by Ricardo Caratti demonstrates his method for controlling a Magnetic Loop antenna with an Arduino. The antenna’s tuning capacitor is adjusted using a stepper motor interfaced with the Arduino equipped to read IR commands sent from a compatible IR remote control. This allows the tuning capacitor to rotate clockwise and counterclockwise. Due to […]

Using stepper motors as generators

Dino played around with some stepper motors by using them to generate electricity. The output is AC so he used a full-bridge rectifier, sometimes refereed to as the Graetz rectifier, to get a single direction signal, basically the absolute value of the sine wave. Check out the video to see it power LEDs, drive a […]