Search found 216 matches

by perfectbite
Mon Dec 01, 2003 12:40 pm
Forum: General Discussion
Topic: 74ALS74
Replies: 2
Views: 758

74ALS74

I know that there was a slight difference between a 7474 IC and a 74LS74 IC but what is the fifference between a 74LS74 and a 74ALS74? Is it one of nomenclature? Or is there a difference in loading and 'pinout'?
by perfectbite
Sun Nov 30, 2003 3:45 am
Forum: General Discussion
Topic: capacitor calculations
Replies: 2
Views: 852

capacitor calculations

I know what a cap does. (I've replaced more starting and running motor caps than I could shake a stick at) I know there are different types of caps but how does one calculate what size capacitor is needed for an electronic application? Is the desired end result worked back from? How come on one unip...
by perfectbite
Fri Nov 28, 2003 3:08 am
Forum: General Discussion
Topic: Joystick controller
Replies: 7
Views: 1321

Re: Joystick controller

Thank You for replying to my question. There will be 3 stepper motors controlling one axis each. nodding, turning and cocking. All are light loads so I don't need the heavy duty CNC type steppers. Analog to digital. Thank you. That is a start. Analog to digital. HMMMM. I would start by taking the ra...
by perfectbite
Thu Nov 27, 2003 12:32 am
Forum: General Discussion
Topic: Joystick controller
Replies: 7
Views: 1321

Joystick controller

Hello. Very briefly and generally could someone give this pulley and lever and LED kind of guy an idea of how to make a 3 axis stepper motor set stop where a constructed 3 axis joystick is stopped at? The joystick as constructed by me will not be pretty but it'll work. (It is for about 2 1/2 hours f...
by perfectbite
Thu Jan 09, 2003 2:50 pm
Forum: General Discussion
Topic: Jacob's Ladder PCB
Replies: 7
Views: 1516

Re: Jacob's Ladder PCB

Way to go Scott. Was it worth the hassle? For projects like this I am a little like Fabius Maximus, I tend to collect everything that I need before trying to build anything. Your info is part of that collection. Of course in real life situations such pre-project assimilation ain't possible so it is ...
by perfectbite
Tue Jan 07, 2003 11:44 am
Forum: General Discussion
Topic: Jacob's Ladder PCB
Replies: 7
Views: 1516

Re: Jacob's Ladder PCB

The website given at 'thinkbotics.com' for the Printed Circuit Board (PCB)for the control of the Jacob's Ladder device given in the December issue of N+V mag. doesn't show the PC Board or respond to e-mail questions about its "promised" avilability. I really don't want to get into making my own PC b...