 | | RE: DC motor with encoders
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Thanks for the tip. Lotsa cool goodies. shan o (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: DC motor with encoders
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Hi ever heard of Maxon Motors (the one that supplied the Pathfinder on Mars with motors). They have hi quality low voltage motors. We are using them here. They have opticel encoders (HP) directly mounted. Price arouonf $120 for a 15W motor incl. (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rs422/485 to RS 232 interface
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Thanks a lot, I had only one rs232 and I used to interface a display. I'll ceck the link to search it. Stefano ---...--- (...) interface (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | How big is our community?
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Hi Fred, Maybe this is a little off topic, but it's still interesting, I guess: How many people are on your HB mailing list? How big is our community? Alf (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Creating multiple serial outputs with the HB expansion board
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I have considered something like that and it sure would work but I was hoping to find a s/w based solution that didn't require changing the h/w. I only need outputs, 2400bps, and I dont need any of the more functional aspects of typical serial parts (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: DC motor with encoders
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You can get all type of motors from Surplus Center their number is 800-488-3407. -----Original Message----- From: CHOI DAMEE <choi5@cooper.edu> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Wednesday, March 10, 1999 9:34 PM Subject: (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Creating multiple serial outputs with the HB expansion board
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Have you considered (not sure about the full requirements) but designing a secondary expansion board with serial controllers instead of the expansion headers?? Just an idea, but the Motorola version of the serial processor (6850?) should be a good (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rs422/485 to RS 232 interface
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(...) We buy them from B&B. However, my link isn't up right now and I can't check the URL. Try www.bandb.com. I know that www.obdii.com links to their site. -d I use Unix because reboots are for hardware upgrades... You use Windows because some (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Creating multiple serial outputs with the HB expansion board
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I would like to create multiple serial outputs (like 3 or 4) using the digital outputs on the handyboard expansion board. The purpose is to drive an external servo controller and external motor controllers (motorminds) which can handle more load (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | DC motor with encoders
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Does anyone know where we can find DC motors with optical encoders? possible low voltage ones (around 12 volts...) Thank you for any information :) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | pointers to functions
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is it possible (with some trick) to pass a pointer to a function in interactive C? more specifically, on the free version of interactive c? i have tried, but it always gets me the error that i am tring to use a <function> in an expression. (in (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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I would like to also know about this. Please email me if you have info! thanx =) chen (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Off the subject question...
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Ja, a laptop would work. Even better, cheaper, why not use a good old desktop coputer? Then you could just have the components you need, IE a motherboard, a removeable video card, sound card, the amount of memory you like, etc. Best of all, the (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Memory peripheral device
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(...) Sure it can, provided: -you can get the voltage output to be in a respectable range for the HDD (solved by changing battery power to output chips) -you can write a driver using the necessary digital inputs/outputs as necessary (hard but (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: unknown HB messages
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I had the same problem. I tried everything, even replacing the CMOS memory chip, to no avail. Since my board was purchased assembled from Gleason, I ultimately swapped them for a replacement which has been working perfectly. I don't know whether (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | unknown HB messages
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Hi. Have any of you guys out there had experienced getting a MEMORY FAULT message from the HB or getting garbled displays ? I really hope someone could tell me what this means and what should I do about it. Thanks in advance. F. Samonte (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Off the subject question...
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(...) Yes it can. (...) Well, without modification, the parallel port can probably do a lot of what you need, although, there are only 8 (12) bits for you to use. A separate processor could communicate through a serial port, and do some of the same (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Memory peripheral device
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Great ! I thought no one could have done or imagined something like. The problem, I belive, is that no massive memory storage device (massive: about 1Mb or 2, or 512 KB ...) has an input that can be interfaced with the handyboard or with another (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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(...) I have a question for you guys. Why are you using the Handyboard to control the car? The SBC332 board on the cognachrome system is a very powerful microcontroller and is fully capable of handling the actuators on your car. As an example, check (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Memory peripheral device
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I too would really like to use a Mini Hard-Drive on my Handy Board robot. (URL) and Mobile Phone use micro-controllers, don't they? Can a HC11 write/access data to/from HD sectors? If anyone out there has any idea's or info, be sure and let us know. (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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