Search found 7 matches

by Bert Russell
Sat Sep 24, 2005 9:13 am
Forum: General Discussion
Topic: Phone service
Replies: 6
Views: 1299

Phone service

Is anyone out there using Voip, and if so, how is it working out?
Thanks for any answer forthcoming.
by Bert Russell
Sun Mar 20, 2005 1:40 pm
Forum: General Discussion
Topic: digital clocks
Replies: 2
Views: 881

Re: digital clocks

Thank you, Enzo. No I have more work to do.
by Bert Russell
Sun Mar 20, 2005 11:20 am
Forum: General Discussion
Topic: digital clocks
Replies: 2
Views: 881

digital clocks

Hello all. My storage drawer for digital IC's has a small number of CD4511B chips in Plastic Dip's. Can anyone tell me how the ting is supposed to be connected to feed a digital clock? The pins that feed the 7 segments are well marked on the Manufacturers spec sheet, but it does not say how it blank...
by Bert Russell
Fri Mar 12, 2004 2:58 pm
Forum: Robotics
Topic: processor preferences?
Replies: 5
Views: 2529

Re: processor preferences?

Regarding programing Pic's, I've been using a Microchip "Picstart Plus" programmer. However, I have just run into an unexpected problem. The Picstart Plus seems to be limited in the size of the program it will handle. My program consists of 96 lines of code, including a look up table, and it assembl...
by Bert Russell
Wed Jan 14, 2004 3:27 pm
Forum: Computer Programming
Topic: PIC's for stepper motor drive.
Replies: 1
Views: 1496

PIC's for stepper motor drive.

Being new to Programming, I am wondering if a Pic 16F84 is adequate for operating a stepper motor? The 18C452 chip which Microchip reccomends, is a monster, and far more than I would think would be required. I have the Picstart Plus programmer that Microchip sells, but the complications involved in ...
by Bert Russell
Wed Aug 06, 2003 10:33 am
Forum: Robotics
Topic: Pic code
Replies: 1
Views: 1358

Pic code

Does anyone out there have the code necessary to program a Pic 16f84 to operate a servo motor. I believe the motor requires a series of 1ms pulses to run cw, and 2 ms pulses for ccw, and 1.5 pulses to return to center. I have the programmer and the motors, but haven't a clue how to write that code t...
by Bert Russell
Tue May 06, 2003 12:10 pm
Forum: General Discussion
Topic: Diode or no diode?
Replies: 9
Views: 2306

Re: Diode or no diode?

Not being an expert on those motor drivers, I would be inclined to include the diodes. If there is already a diode in the MosFet, they would be in parallel, so it probably wouldn't cause a problem, whereas, without any diode, the motor may be in serious trouble.