Feb 20, 2013 by Atmega Editor
Servo motors are so called “closed feedback” systems. This means that motor comes with control circuit, which senses if motor mechanism is in desired location and if...
Feb 14, 2013 by Atmega Editor
For measuring motos speed there can Optical interrupter used like H21A1. This is a device where IR LED and photo-transistor is coupled in to plastic housing. The gap...
Jan 2, 2013 by Atmega Editor
As explained in earlier article, Stepper motor is operated by energizing the stator coils in an ordered sequence. When the input sequence of signal is applied to the...
Nov 12, 2012 by Atmega Editor
The ATtiny2313-based project is an experiment on the closed loop DC servomotor control system (SMC) by Elm Chan. It can be used for practical use with/without some...
Nov 9, 2012 by Atmega Editor
The Electric Eel Wheel is a smart electric spinning wheel which helps you spinning the fiber of your choice into yarn easily instead of traditional wheel. This Electric...
Nov 7, 2012 by Atmega Editor
This is the second stepper motor driver circuit I build. The first one had 4 linear current sources and got so hot it was barely usable. It had some cool leds though....
Jun 23, 2012 by Atmega Editor
Got some scavenged stepper motors from printers/disk drives/etc lying around?
Some probing with an ohmeter, followed by some simple driver code on your microprocessor...
Jun 18, 2012 by Atmega Editor
Do you know this classic wooden labyrinth game with two knobs for X and Y rotation?
So, I’ve decided to modify one by connecting two standard servos to the knobs...
Jun 13, 2012 by Atmega Editor
With this circuit you can drive a unipolar stepper motor. It operates in full step mode. You can get a stepper motor from an old 5.25 disk drive. The AVR...
Jun 12, 2012 by Atmega Editor
With this circuit you can control two unipolair stepper motors in full step mode via the RS232 serial port of your PC. A terminal program such as...
With this project you can control a unipolar stepper motor. You can control both the speed and the direction of the motor.
The speed and direction and can changed with...
Jun 8, 2012 by Atmega Editor
This project gives a speed control of DC motor through PWM method. The Dc motor is derived by the L298 driver IC.
You can also control the direction of the motor.
December 4th, 2013
Note: By "beginner's guide", I mean a guide written by a beginner. (I made it at TechShop SF, during[...]
December 3rd, 2013
This Design Idea describes a 9V battery-voltage monitor whose total parts cost less than 34 cents (F[...]
December 2nd, 2013
This project describes an Arduino-based FM transmission using the KT0803K Digital Stereo FM Transmit[...]
December 1st, 2013
This project was inspired by the "Big Air" open baffle system by Jim Strasser (please contact me for[...]
November 30th, 2013
Although this kind of voice effect can be obtained by means of some audio computer programs, dependi[...]
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