Search found 28 matches
- Sun Jan 27, 2008 1:46 am
- Forum: Robotics
- Topic: Looking for a microcontroller, need suggestions.
- Replies: 13
- Views: 12872
- Sat Jan 26, 2008 12:36 pm
- Forum: General Discussion
- Topic: Getting started wire wrapping (or prototyping like this)
- Replies: 13
- Views: 5829
whenever i use wire wrap wire for prototyping , i never use the little tool. i take the wire, wrap it around the component lead once or twice , and solder it to the lead. typically the iron will melt right through the insulation and you will have no continuity problem, this also allows you to make m...
- Fri Jan 25, 2008 4:09 am
- Forum: Robotics
- Topic: servo help
- Replies: 4
- Views: 6270
really what has to be done is to program a microcontroller to run a predefined set of instructions which turn a motor or activate a solenoid to run compressed air through a piston to activate the mouth. you would then have to either use an instruction from the microcontroller to start the cd player ...
- Fri Jan 25, 2008 4:00 am
- Forum: Robotics
- Topic: Motor Speed Steering Control or Servo Steering Control?
- Replies: 3
- Views: 5297
really what the debate is here is skid steer vs a tricycle type design right? dc servo's come in many sizes all the way up to enormous 100 + volt servos used in large high precision machine tools. they can be cost prohibitive at that size, but they are out there. keep your eye out too, because somet...
- Fri Jan 25, 2008 3:19 am
- Forum: General Discussion
- Topic: CHANGE 3phase to 'single phase 60Hz ...???
- Replies: 12
- Views: 9173
- Fri Jan 25, 2008 3:15 am
- Forum: General Discussion
- Topic: European Espresso maker installed and wired for US use
- Replies: 23
- Views: 11871
- Fri Jan 25, 2008 2:45 am
- Forum: General Discussion
- Topic: Relay chatter
- Replies: 27
- Views: 14710
I've run into this problem before with indutrial dc relays (big , 125 amp suckers) with 40VDC coil voltage at about 1/2 amp throwing current pull. the problem we had was with the current draw being too high for the source to effectively source. the relay would pull closed, open , pull closed , and o...
- Thu Jan 24, 2008 2:08 am
- Forum: Robotics
- Topic: servo test help
- Replies: 7
- Views: 7425
- Mon Jan 21, 2008 12:01 am
- Forum: Robotics
- Topic: servo test help
- Replies: 7
- Views: 7425
typically radio shack is one of the worst electronics stores in this area, all they sell is overpriced crap anymore. i went to RS looking for a cat 5 patch cable. last week , and they wanted 7.99 for a 6 footer!!! OMG i went to our local industrial electronics store, and picked them up for 2.99 a pi...
- Sun Jan 13, 2008 11:34 pm
- Forum: Robotics
- Topic: looking for quality plastic gears
- Replies: 5
- Views: 7534
- Sun Jan 13, 2008 11:12 pm
- Forum: Robotics
- Topic: Motor recommendation
- Replies: 5
- Views: 7351
i have found that old c-band satellite dish azimuth postioners (jack-shafts) which are linears actuators use a nice 36 volt high torque motor to drive the jack-screw, what i do is drive around town, looking for old c-band satellite dishes, if i find one , i talk to the owner, most people don't use t...
- Sun Jan 13, 2008 5:10 pm
- Forum: General Discussion
- Topic: Paypal, usage, etc.
- Replies: 17
- Views: 8287
- Sun Jan 13, 2008 5:51 am
- Forum: Up For Grabs
- Topic: 3 New "Bimba" brand pnumatic cylinders
- Replies: 6
- Views: 7890
- Sun Jan 13, 2008 5:41 am
- Forum: General Discussion
- Topic: CHANGE 3phase to 'single phase 60Hz ...???
- Replies: 12
- Views: 9173
i discussed dropping three phase from the pole to my shop , it comes with a hefty fee! just an idea here, but: Why not find a single phase reversible ac motor with the same housing standard as the 3 phase hoist motor (industrial motors typically use standard flanges, and are known by ASME standards ...
- Sun Jan 13, 2008 5:32 am
- Forum: General Discussion
- Topic: Merging / splitting DC/AC signals sharing a conductor...
- Replies: 16
- Views: 8113
what about a diplexer of the type used for running a tv signal over the same cable as powered lnb's in satellite systems? there is a dc power passing i/o side and a dc blocking ac passing side and they are readily available from satellite dish installers, they use a standard 75 ohm connection for bo...