 | | Re: Power
|
|
I've been having very good luck with designing an entire robotic ecosystem using only analog components! Predators, Herbivores, plants, the works! (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Polaroid sonar connector
|
|
(...) According to my measurements, the flat flex cable that comes with the Polaroid kits is 1.25 mm (or 0.05"), so it would probably not be quite compatible with the parts that Digikey offers. I looked exhaustively through the Digikey offerings, (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Power
|
|
I didn't see the program, but I have an article my brother cut out of a newspaper and sent me, the guy's name is Mark Tilden, he makes all his robots out of old walkmans and pagers etc. I find his claims kind of hard to believe also. He has a (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Low battery detection
|
|
sure, it will drain the battery, but if it's a low enough drain, you don't have to worry about it. for example if you have a 10 amp-hour battery, drawing .5 mA would take something like 830 days to drain it. I wouldn't worry too much. to calculate (...) (27 years ago, 18-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | RE: Nowbody can help me???
|
|
I never say imagecraft C can't use peek and poke???? I can see, you don't understand my mail. Wich i see is : make beep the handy is not simply put a byte in a place into the memory, no way. you have to write a interrupt routine , and do adiitional (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: pneumatics
|
|
I think it was the crazy guys in Austin (the ones that put on Robofest) that had a 'portable' air reservoir that consisted of a 2 liter coke bottle, a relief pressure valve and tubing. The coke bottle was filled about a third of the way with water, (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | RE: Low battery detection
|
|
Can you translate this into "EE for dummies?". I slowly start to grasp some of the idea about voltage dividers but still don't understand. Won't this setup drain the battery? How does one calculate and wire such a thing - in this particular case? I (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Power
|
|
Perhaps your motors draw too much current. You can only draw 600mA from the L293D driver IC. In the HB manual, you can see you can draw 1A from a IC from TI. (I don't know the exact number right now). You could try to use a seperate IC for each (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Power
|
|
Perhaps the problem is your motor-drivers IC's. If you use the L293D or something, which are standard on the HandyBoard, you can only draw abou 600 mA. I use the other ones mentioned in the HB manual (they're from Texas Intr., but I can't remember (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Power
|
|
Perhaps the problem is your motor-drivers IC's. If you use the L293D or something, which are standard on the HandyBoard, you can only draw abou 600 mA. I use the other ones mentioned in the HB manual (they're from Texas Intr., but I can't remember (...) (27 years ago, 17-Mar-98, to lugnet.robotics.handyboard)
|
