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31 Oct 2008

One of the nice things about flying electric is you can test run your motor in the house, workshop, or in the yard and the neighbors won’t complain. The problem is how to control the speed of the motor. One way is to use the plane, radio, and speed control with the motor in it. That’s no fun! Mount the motor on the bench and just plug the battery into the motor. That’s even worse! It’s hard on the motor and gearbox.

To solve the “It’s hard on the motor and gearbox” problem I made myself an Adjustable Voltage Control unit (speed control) so I can slowly bring the motor up to speed.

Adjustable Voltage motor controller for motor testing - [Link]

24 Oct 2008

Servo motor is very useful in robotic. I used servo motors to create few robots in the past. But I never think of using servo motor as input device, and mahto did it. Making servo motor as input device, you can now record the position of the servo motor and play it back the sequence of actions afterward. [via]

Servo Motor as Input Device - [Link]

12 Sep 2008

This serial servo control software was written in “Visual Basic 5 Pro”. It uses the PC serial port “com1″ to talk to a Basic Stamp, or a Pic Micro programmed with MicroEngineerings PicBasic.In between positions are available as well.You can just click on the slider and hold the mouse button down while moving the slider for large adjustments, or use the up/down arrows for slower more precise positioning.

Serial servo control - [Link]

12 Sep 2008

One of the nice things about flying electric is you can test run your motor in the house, workshop, or in the yard and the neighbors won’t complain. The problem is how to control the speed of the motor. One way is to use the plane, radio, and speed control with the motor in it. That’s no fun! Mount the motor on the bench and just plug the battery into the motor. That’s even worse! It’s hard on the motor and gearbox.

Make an Adjustable Voltage motor controller for bench top motor testing - [Link]


12 Sep 2008

This article was submited by morgoth and is part of the PCB giveaway program, so for submitting he’s work morgoth will receive a free PCB. Also in the future we’ll see more of he’s projects.

Of-course there are other projects based on this idea around the web, but what makes this one special, it’s he’s features. There are 3 stepper motors controlled by a single ATmega8 that runs at 8 MHz, and a motor driver for each motor. The motors and their drivers were recovered from an old printer. [via]

3in1 Stepper Motor Controller - [Link]

10 Aug 2008

This is a simple circuit for DC Motor speed control (fan speed control, light dimming and etc) using the 555 timer. Also a good starting point for novices wanting to get their hands dirty with the 555 timer IC. Some would argue that this is not the most efficient approach.

Simple and dirty PWM For Motor Speed Control – [Link]

31 Jul 2008

The base processor is a PIC16F876, which is a 28-pin PIC processor, running at 20MHz. It is paired with an LMD18200 H-bridge, which can drive 3A continuous loads, 5A peak.The interface using serial mode at 19,200 baud, and uses standard text commands. [via]

Designing a PID Motor Controller – [Link]

12 Jul 2008

An automatic blind opener is not a new invention. They have been available for years. However, even the low end models cost in excess of a hundred dollars per window. Some models and styles can cost ten times that much. Most use IR remote controls. Other available activation options include timers, RS-232 interfaces, and light sensors. I needed a controller with a light sensor that would open my blinds in the mornings and close then in the evenings. However, I was not willing to pay what I thought was an unreasonable price for a simple light activated motor. Being the Maker that I am, I knew I could design and build what I needed and do it for a lot less money than what any commercial units cost.

Build A Motorized Window Blinds Controller - [Link]

16 Jun 2008

This project was developed as an inexpensive way to drive small dc brushed motors as positioning servos for use on a desktop sized CNC machine. The board is interfaced to the PC through 2 pins of a parallel port. The drive signal on these pins is known as quadrature drive. The power stage consists of a power op amp driven in constant current mode. The internal PIC processor ( a 30f4012 from Microchip ) is programmed in C through the C30 compiler and the Microchip IDE. The servo loop parameters are programmed through a serial port connection and are saved in the dspic eeprom. Once set for a particular drive, they should not need to be changed. [via]

Dspic-Servo Project - [Link]

16 Jun 2008

In this lab, you’ll control a servomotor’s position using the value returned from an analog sensor. Servos are the easiest way to start making motion with a microcontroller. Even though they don’t turn 360 degrees, you can use them to create all sorts of periodic or reciprocating motions. Check out some of the Flying Pig mechanisms for ideas on how to make levers, cams, and other simple machines for making motion. [via]

Controling a servomotor - [Link]



 
 
 

 

 

 

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