Search found 11 matches

by dribach
Tue Mar 16, 2004 11:49 am
Forum: Robotics
Topic: processor preferences?
Replies: 5
Views: 2258

Re: processor preferences?

seeing as how this is for a course, rather than personal hobby, you might not have to worry too much about cost of the programmer vs. cost of the chip. you may only need one or two programmers that the students share during class time, meaning that the real cost savings over several years will come ...
by dribach
Thu Oct 02, 2003 10:23 am
Forum: General Discussion
Topic: RPM regulation
Replies: 55
Views: 9874

Re: RPM regulation

my suggestion: get a small risc microcontroller with PWM output and at least one external interrupt. should be pretty easy.
by dribach
Fri Sep 26, 2003 4:56 am
Forum: Computer Programming
Topic: code grabber
Replies: 2
Views: 1732

Re: code grabber

for hard-core "code-grabbing," learn assembler and go here: http://www.thefreecountry.com/programmi ... lers.shtml
by dribach
Thu Sep 25, 2003 5:09 am
Forum: General Discussion
Topic: physics ?
Replies: 21
Views: 3286

Re: physics ?

hehe as you can see, rick, i got the spanking right back. :)
by dribach
Wed Sep 24, 2003 10:34 am
Forum: General Discussion
Topic: physics ?
Replies: 21
Views: 3286

Re: physics ?

as several people here had mentioned and several people (in some cases the same ones!) had failed to keep in mind, if the ice cube is traveling in a vacuum, it will NEVER melt. liquid water needs pressure in order to exist. so all you have to worry about is the change from solid to gas. you might al...
by dribach
Sat Sep 13, 2003 8:14 am
Forum: Robotics
Topic: need inexpensive linear motion
Replies: 12
Views: 4545

Re: need inexpensive linear motion

ooo, creative :)
by dribach
Sat Sep 13, 2003 8:04 am
Forum: General Discussion
Topic: automatic transmission
Replies: 10
Views: 1955

Re: automatic transmission

hmmm... good idea ;)
by dribach
Thu Sep 11, 2003 10:42 am
Forum: General Discussion
Topic: automatic transmission
Replies: 10
Views: 1955

Re: automatic transmission

wow... i'm really impressed with the number and quality of these responses. i plan to make the clutch pneumatic, because i still want to be able to drive it like a standard manual when i want. russ, i like that brake idea, i might add that feature later if i get around to it. no_vice, i think you ar...
by dribach
Wed Sep 10, 2003 1:59 pm
Forum: Robotics
Topic: need inexpensive linear motion
Replies: 12
Views: 4545

Re: need inexpensive linear motion

i think it's have to be a pretty hefty solenoid to produce 5 lbs of force... i'd definitely go with a servo, possibly from a hobby shop (to be used on large RC planes maybe), or one made from stephen's suggestions
by dribach
Wed Sep 10, 2003 1:53 pm
Forum: Robotics
Topic: Vision
Replies: 10
Views: 3006

Re: Vision

chessman has the right idea, but instead of diffracting the laser into dots, pass it through a line generator (basically a glass cylinder) to make a horizontal line. then mount the CCD camera sideways a little bit above the laser. what you'll get is an image of a vertical line on the screen. the top...
by dribach
Wed Sep 10, 2003 1:06 pm
Forum: General Discussion
Topic: automatic transmission
Replies: 10
Views: 1955

automatic transmission

i'm trying to design an automatic shifter for a manual transmission car, using pneumatics and based off of rpm and speed readings. i can do the pneumatics. that's just simple valve controls, and i can program pretty well, but i'm not to experienced in electronics. i'm looking at using the atmel atme...