Dan ... I was calling it sprawled because it has a 90deg bend at the coxa/femur joint. The femur/tibia joint stays pretty straight when the foot is down so ...
Peter Balch
peterbalch@...
Jun 1, 2009 10:46 am
40106
Wow.. Yes, I am impressed. The language is nostalgic of the 1980's--my first language was TRS-80 Color Basic on the Color Computer 2 (then I learned M6809...
Well, I was busy last Monday night mopping a 1/4 acre gym floor. (Boy, if there was ever a need for a robot...) But there was still a good turnout for the long...
Hi. My name is Dan Knorr and I am a grad student at UW in chemical engineering, which means I know nothing about robotics. My co-worker and I are trying to...
Dan, Small computer controlled robotic arms like this are typically built using R/C servos rather then raw motors. Depending on the weight of the samples you...
It may sound a little simplistic but I'd recommend looking at a LEGO Mindstorm kit. For $250 to $300 you would have all the parts you needed to get the job...
Not to be contrary, but for this type of work (not a robot arm really) I would recommend stepper motors. This is a low mass object but it needs to move...
Oh, and one more thing - To control stuff from your computer check out phidgets.com and the Elexol stuff at orteches.com and several other places. DLC ... -- ...
Dan How heavy will the sample be? How long will the arm be? That will determine whether you can buy a robot cheaply or must make your own. Will the hand need...
Peter Balch
peterbalch@...
Jun 2, 2009 8:51 pm
40114
... To me, X or H or bend at the hip doesn't matter. What matters is the legs are rotated under the body. BD is the same as humans, dogs, horses, etc, in this...
dan michaels said: Tuesday, June 02, 2009 3:58 PM ... What would you say of a grasshopper then? Rear legs are aligned with body. Side legs backwards sprawled?...
... Too bad, it seems difficult to get a direct answer in one place by googling. Google rarely falters so badly. Wikipedia is just as bad. However, the...
dan michaels said: Tuesday, June 02, 2009 5:04 PM ... Okay, this is something said by a mule lover. He explained he prefered a mule over a horse, because the...
Dan, Not sure why you had trouble connecting to the Monday Night Chat, but feel free to try again. It's a great resource for answering these questions. Despite...
Hello Everyone, First, yes I googled for this already and had limited success. I have like 7 or 8 motor's that are the same and require 24V, plus a magnetic...
Kevin, Do you have any other information about the motors? Like what is the current required to drive them? What are you trying to drive with them? Are they...
i bet u need a big transformer(the smps will overload) and if u are planning to drive a big wiper motor then u cant drive more than 2 as its a monster of all....
Kevin, Walmart has batteries for riding lawnmowers that are about $20 each. They would provide ample current and would better approximate the conditions in...
I have an ATX power supply that has two 12V rails @ 18A each. While I never really trust those rating, I'd think that you could connect the two in series and...
Insanely priced is realtive to an individuals budget. I pickedup a 24V 12A power supply for 36$ from Camtronics. A 24V battery charger is another good option....
the best transformers are found in the inverters so just go for it.u gotta get a huge current rated diode with heat sink, then u will need inductors and...
Ok.. So I went through the DarkBASIC tutorials and wrote a few little things. It's totally from the early 1990's--language and graphics quality. However, it...
Hi! You'll need a 15-0-15 /10A Transformer, a 20A Bridge rectifier, 10,000ufd/ 63Volt capacitor and 2 LM337k Voltage regulator. You'll also need some 240ohms...
... From what I can tell, Peter seems to think the uppermost leg segment on Big Dog looks like a coxa on an arthropod, and therefore thinks that Big Dog has a...
Hi Kevin, I would check the electronic surplus stores. 24V is a common military and industrial voltage. I suspect that you can find big 24V supplies cheap...
hey! Â Â Â Â Â Â the LM337 will not do the job. U will need LM396 or LM196 with 10 amps loading capacity. I am not totally satisfied though because a motor...
Hi Mike, ... Generally speaking you can't do that because the two connectors share a common ground. Even with 2 separate power supplies, the ground on the...
Good point. Wondered about that after I sent it, but it was too late by then... Figured if it wouldn't work, some helpful person would chime in, so thanks for...
Hello Everyone, I goofed... I do have an excuse, brain injury and all, just kidding... But, I have the motor sitting in front of me and these are the specs... ...
... Yes, Sunil! That was a typo...I actually meant LM338K @ 5A. We use 3 of them in parallel for our 15A reg supply to drive motors without problems. The LM396...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
