All posts in the 'motor controller' Category
Posted on 06 Jul 2008
This is an example that demonstration how to control stepping motor via USB interface.The PC software program with delphi.The project use CPU PIC18F4550 with full speed USB interface at 48MHz, USB 2.0 compliance.The firmware for this example program with MPLAB C18 with USB driver from Microchip. [more]
Posted on 25 Jun 2008
This is DC motor speed control based on PIC16F867.The circuits use frequency PWM about 10KHz which does not make a noise in the motor.This project can drive 1 Amp motor current without heat.The motor speed controled by potentiometer which is connected to ADC input.[more]
Posted on 11 May 2008
Aki writes:The electric circuit board for controlling stepper motors came out after figuring out all the specifications of the components. Some sketches were necessary to done. Then Auto-Cad was a great tool for drawing the wires and locate the components. Mainly my circuit is similar than shown in Mel’s page. I didn’t use opto-isolators and couldn’t find TIP120 from a local electric dealer, so I used TIP122 transistors. I also placed the small hand-pad diodes on the board instead of installing them inside of the hand-pad. After soldering work and changing the InverterOutPut (!) to 1 the board started to work.[more]
Posted on 07 May 2008
Jason writes:This entry shows the configuration I used to make a NMB (Minebea Electronics Co.) PM35L-048, 24VDC, 9.4 Ohm unipolar stepper motor work. I salvaged several of these motors from some Xerox inkjet printers. The motors were labeled well and I found manufacture specifications on-line. I was not able to find a wire diagram so I defaulted to making a truth table as I had done for unipolar steppermotors. Most steppers with 4 wires can usually be identified as bipolar stepper motors, which can be driven with a dual H-bridge IC such as the SN754410 by Texas Instruments. [more]
