 | | HB does not enter on bootstrap mode
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Hola, I followed step 4.4 in the HB assembly manual. I hold down STOP-SW while powering on the board, then the battery LED light for 1/3 s, but the power light does not go OFF. I have checked that the MODA signal and the RESET are present at the (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Signal Diode
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Hey all, Mouser (and Digi-Key, etc.) say that the signal diode 1N4001 has been discountinued, I can't seem to locate any one who has them. This small partis holding up the project. Anybody have extras? Ideas? JTW (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | IS1U60 IR Demods
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Hello! Can anyone tell me what a fair price would be for this part (IS1U60) would be? I am not trying to make money on anyone I just want to try to share some of these hard to get parts. By the way, sorry I haven't got back to those who responded I (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Re: empty addresses
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(...) Why do you want to store it at a particular address? Can't you store it into a variable name and let IC take care of where it goes? I think the 16K memory when allocated builds from $0000 and $7FFF towards the middle, so I'd guess any unused (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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I vote for the 100mA 5V switch. Digital Outs seem to be quite the disired feature here amoung many. This 100mA capability also provides more options for people to use these signals. It's better than just the CMOS signal, since it can double as that (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: memory
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I believe reliable operation of the VR used in the HB is about 7 V. Is this correct, Fred? (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | empty addresses
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where's some good addresses to store three bytes of info? everywhere i put it seems to crash the system.... thanks, -md (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | RE: I agree-
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(...) I agree. I could use a few more outputs, and a serial port or two. Having a synchronous serial port would be too good to be true, but I can do most of what I need with just one more async port over what the Handyboard currently has. Haven't (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | RE: I agree-
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(...) I both agree and disagree with this sentiment. One of the reasons I would like to have six servo outputs, is that I've got a Lynxmotion arm that I want to control. The arm comes with a Scott Edwards serial servo controller. The problem is that (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | unsubscribe
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Please unsubscribe me. hachemi (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: large # of digital I/O's
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This chip is REALLY handy.. I worked some time with it, and liked it.... Bastiaan ---...--- (...) $4 (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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Hi Fred The "new" spec sound's great ! I'd also like to see a bit more digital I/O on any expansion board, and the extra 8 CMOS outputs are just what I (we) need. Thanks Scott (...) Martin'" <fredm@media.mit.edu> (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: L293D Piggybacking
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Yes, most people have found that this works. -Fred -- This message was composed using Articulate Systems' PowerSecretary, a Macintosh-based speech-to-text dictation system. Please forgive any sloppiness in the formatting. Thanks. -Fred In your (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | L293D Piggybacking
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My question is, can I piggyback the L293D's and what will this increase my max current output to? I am going to just one motor from port 0 and the other from port 3 so as possibly eleminate smoking any more 293's. What do you think? Bill Rose Fort (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Not enough Servo ports on Expansion board
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Hello, Iwould suggest increasing the available servo ports on this. Servos are widely available, getting cheaper, and compact for robotics. This could have been facilitated on the original Handy board, but nevermind. I'm already using my method on (...) (28 years ago, 9-Feb-97, to lugnet.robotics.handyboard)
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| | HB does not enter on bootstrap mode
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I followed step 4.4 in the HB assembly manual. I hold down STOP-SW while powering on the board, then the battery LED light for 1/3 s, but the power light does not go OFF. I have checked that the MODA signal and the RESET are present at the 68HC11, (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: AS11 IC?
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You can get the PC version of everything you need to compile .ASM source code into IC compatible .ICB files at (URL) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: FW: expansion board schematic posted
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Sean, Using two of the SPI port pins, and a MUX and DEMUX, you should be able to gang together four of the Polaroid ultrasonic sensors. See if the code below makes sense. I wrote it a while ago, when I wanted more Polaroids, but - I didn't actually (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board/multiple sonar
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It's actually a '374 or '373 for outputs. I guess you could use them for inputs too, but you're better off using a '244 for input. Or even a '574, '573, '541, these chips put inputs on one side and outputs on the other. Very convenient. Even (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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(...) I would love to see more digital outputs put on the expansion board. Just out of curiosity, is the Poloroid sonar connection still going to be on the board. That is what I am waiting for most of all. Keith (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | To Add my 2.5 cents
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I think the expansion board is A-OK as it is. (I'm being rather selfish since the Hartford Firefighting contest is in April). -Jim (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | large # of digital I/O's
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Check out the 82C55. In a 40 pin package, it has 24 bits of digital bidirectional I/O, and can be bit- or byte- addressed. It's cheap (like $4 or so in quantity). The 40-pin DIP package is big, but not compared to 3 20-pin DIP packages which it can (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | FW: I agree-
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Servos outputs are good, but generic handyboard serial output to Scott Edward's Serial Servo Controller would be faster to implement and design, much and simpler to work with, and would be extensible to other serial projects too. (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | FW: expansion board schematic posted
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I'd agree with this option - I don't need any more inputs, but I do need 4 logical outputs 2-4 Hi-current outputs Serial communications 1 (preferably 2) sonar connectors I could really use that second sonar. I don't suppose there is a way you could (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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While I've only been working with the Handy Board for a week or so, I would also like to see several more outputs added. Perhaps some combination such as 8 digital (CMOS) outputs, and 8 of the dual-transistor types. If you could rig it up with (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Dum spiro spaero (While I breath, I hope)
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(...) Thanks, Randy, my good man! Sorry if took a bit of playing with good old "honoris studioso". But you can't blame a guy for trying. Especially if it yields results. :) Alex. (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | IC development
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(...) OK, Uncle! I apologize that, at times in the past year, IC development has taken a back seat to our 32-bit C environment and vision system development. We realize that we have made a commitment to the community to come out with IC 3.1, and we (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Expansion board
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Hi Everyone, We (Digital Micro Systems) have an expansion board which we've been beta-testing for a while, but have not released yet. This seems like an appropriate time to ask for any feedback regarding the design before release. Anyway, the (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IC
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(...) from commitments. How MITesque! That is why we had to drop HB development for our equipment and look for another platform. If you are in the same situation take a look at (URL) You might like it. Alexander A. Chaihorsky V.P. Engineering, (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) from commitments. How MITesque! That is why we had to drop HB development for our equipment and look for another platform. If you are in the same situation take a look at (URL) You might like it. Alexander A. Chaihorsky V.P. Engineering, (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: I agree-
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--vote:: More outputs. Sincerely, Yoni Garbourg << To succeed, Atificial Intelligence needs 1.7 Einsteins, two Maxwells, five Faradays, and .3 Manhattan Projects." >> -John McCarthy (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | digital outputs
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Just to be clear, I wanted to ask if I am right to think that the HB, with no expansions, is configurable for ONLY 5 digital outputs? I'm aware of the #9 pin on the output bus. It works fine. But, if someone could explain in more detail the J6 (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | I agree-
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More servo outputs would be great. I too would like to control a lynxmotion arm with the handyboard. Or perhaps a legged robot with servos or servo controlled hydraulics. I vote for more outputs. Thanks. -ira C User Support Manager Earlham Computing (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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It is largely a space issue, not only for chips but connectors. It definitely would be feasible to remove one of the analog muxes and substitute an output latch in its place. Then the specs would be 8 general purpose, 4 hi impedance, 4 LEGO analog (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | shaft encoder routines
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now available for connecting break-beam or reflective encoders to analog inputs 0 through 6. See the main page (URL) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | RE: expansion board schematic posted
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I've got one comment "balance". The expansion board adds 24 new inputs and only 6 new outputs. Perhaps I'm atypical but I don't need any more inputs to the handy board, I've got those aplenty, but I'm screaming for outputs to control other parts of (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: FW: expansion board schematic posted
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(...) Hmmm... why not do this? Use a 74273 and tie it to the HB's data lines and strobe it with Y0 (or Y2 or Y4)? This would create a latched output "port" at address 0x4000. Tie two of the 74273 outputs to the 'A' side of two [N]AND gates (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | help
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help (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Communication Problems!!!
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i'm having problems with my handyboard communicating with my mac. i cannot seem to get either one to recognize each other in any way. when i jumper the max32 to the 25 pin connector as said in the assembly, the green LED goes on. however, i cannot (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Mobot report
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: text/plain; charset="us-ascii" Content-Disposition: attachment; filename="1.TXT" Content-Length: 33505 2. Content-Type: text/plain; charset="us-ascii" Content-Length: 1 (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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(...) Since there's some prototyping area, why not just make them regular CMOS signals and include application notes on the web page on how to use the signals for various options. How does the expansion board mount? Looks like it plugs into the top (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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(...) I completely and totally concur, even down to the PS. More outputs are VERY VERY VERY VERY much needed!!! (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | expansion board schematic posted
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Hi all, I have put on the web site a schematic drawing of the expansion board as it currently stands. I would appreciate any comments regarding the feature set. In particular, I'm not sure what's best to do with the two digital outputs: * just (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | AS11 IC?
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Where can I get the assembler AS11 IC which is mentioned in The Handy Board Technical Reference Manual? I have found only a MAC version and I am using a PC. Thank you, Edwin (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Range finding question?
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Hi! I'm looking for a way to tell the range between my board and an 'active' point that is between 5 and 500 meters away. What I mean by active is that at this point I could install some kind of beacon or transceiver which could echo signals sent by (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | IC
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Is Newton Labs doing _any_ development at all with IC? Seems to me like the final version was originally planned to come out about a year ago. ---...--- Jeff Keyzer jkeyzer@ucsd.edu UCSD Aerial Robotics Team (URL) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | Expansion board
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When is the release date for the expansion board or is it still up in the air? Thanks. Keith Keith Soldavin kas219@email.psu.edu (URL) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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| | IR o/ps
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Hi, and my obsession with IR sensors continue.... In the infrared transmission circuit of the handy board, if i connect one more LED (HLMP1700) in parallel, can i drive the two LED's at the same time? Will there be sufficient power to drive the (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Motors????
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Well, I am about to get over the shock of frying my L293's. Now to address the motor issue. 1) What kind of permanent magnet motor can I use on a bot that is about 9 inch in diameter. Right now I have the two gear reduction motors that really work (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | memory
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1. Is there a way of expanding the 32K memory in the HB? How? 2. I want to reduce the weight of my project by changing the battery. Is it possible to operate the HB at lower voltage since I'm not using the motor drivers for my project? If so, what's (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | blown L293's
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Bill, I think the moral of the story is: DO NOt use 3v motors with the Handy Board. They draw too much current. Use motors rated at least 6v, even that can be a problem. I should put this in the manual somewhere... See (URL) to buy more L293's. (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR sensor question
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As illustrated in the hb manual, the QRD and QRB sensors do NOT use modulated IR light. the sensors as wired just turn on the IR emitter like a little light bulb, and the received sensor value is a combination of reflected IR light and general (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Re: "Old" (pre-6500) Polaroid sonar boards?
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Well, that was too easy. Guess I should have read all the way through the FAQ earlier... *thud. I've now got the MISO output driving the VSW input on the sonar board, and am reading a digital input for the MFLOG signal. Works like a charm. I'd still (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motor Problems
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Geeze - sounds like my kind of luck. Well, according to the Handy Board FAQ, there are two varieties of the 293; the 239B and the 293D - the "D" is rated at 600mA/channel and has spike suppression diodes built in, while the "B" is rated at (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | int's and long's
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Greetings all Anybody know if IC can support unsigned int's or long's. My situation is, I need to load a 32-bit signed number, ie a long, into the HB. BUT, I can only load it two bytes at a time, most significant byte first. I've tried different (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Motor Problems
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I left a email about my motor problem earlier this evening. Well, since then I have changed my code to use ports 2 and 3 and the bot worked just fine for a little while, then both 293 chips smoked. I guess I was drawing too much current. Anyway I am (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | "Old" (pre-6500) Polaroid sonar boards?
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Has anyone done anything with the "old" Polaroid boards? (I've got some I pulled out of some auto-focus cameras I bought cheap many years ago.) I can hook them up and make them work by hand, and I've got one partially wired into a Handy Board, but I (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | IR sensor question
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I have a very basic doubt regarding the working of the QRD114 sensor. If we connect the sensor as per the illustration in the handy board document, how do we make the emitter transmit IR waves? what will be the frequency of the IR beams (40kHz)? (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | My motors quit!
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Howdy, Well I finally got my bot to going and was hooking up the bump sensors. I had one plugged in and was seeing how it functioned when all of the sudden there was dead silence. My motors quit running. I have them hooked to ports 0 and 1 of the (...) (28 years ago, 6-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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The memory circuit is probably flaky, or, you zapped a 6811 address line output. If you haven't already tried, swap the 6811 with a known good one. If that doesn't work, examine the ram chip addr, data bus, and select signals with a logic probe when (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Downloading problems
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After setting the CONFIG register, downloading the pcode never completes. We get anywhere from 0 to about 1600 bytes transferred, then an error. Everything has checked out to this point. Any hints? ***...*** * Greg Starr, Professor and Graduate (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Re: QRD1114?
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Digikey. call 1 800 DIGI KEY. add 'QT-ND' to the part number and you get the digikey catalog #. -fred In your message you said: (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | SPI
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Hi all- I remember reading something about an asynchronus serial routine at 1200baud using the SPI that was coming out in January. Does it exist? If so, how can I get it? Does anyone have anything that transmits RS-232 on the HB? I still want to be (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Polaroids
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Jim, Check out the following links, the work has already been done for you! ftp://cherupakha.med...trib/kent/ ftp://cherupakha.med...ent/readme - Prabal (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Polaroids
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My design team would like to incorporate two polaroid sensors with our handy board. We were wondering just how do we send the INIT pulse from the HB to the Polaroid sensors? The member in charge of writing the code for our robot quickly drafted up (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | QRD1114?
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In the documentation for connecting sensors and actuators to the HB a The Quality Technologies IR reflective optosensors (QRD1114 & QRB1114) were depicted in the example and recommended. Where can these sensors be aquired? Thanks JTW (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR sensors
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(...) Sure. We put "Front" on digital(14) and "Right" on digital(15). And you can have as many as you want that don't interfere with each other. We did something like... contact = digital(14) * 2 + digital(15) to get both sensor results into an (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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| | Extra power supply?
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I can't seem to locate the 'how to add a second power supply for a servo' information. I know I read it once, but now that I want to go back and use it of course I can't find it. (duh) Can anyone point me in that direction? Also I could use any (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | Handyboard debugging problem...
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|
One of the student groups in my Lego robot course is having a problem getting their Handyboard to work...they got IC to load successfully, then went ahead and installed U6 ('HC138), U9 ('HC04), U5 ('HC244), resistor packs RP1 and RP2, and SW2. Now (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | Please subscribe me to mailing list
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Please subscribe me to the mailing list: menser@sbu.edu Matt Enser email : menser@sbu.edu WEB: (URL) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Sample bump sensor routine
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whether you use analog or digital ins, you don't need the 47k pullup because the hb already has one. just wire the signal line to ground through the normally open switch. bill, i suggest you write your program without using the multitasking (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Sample bump sensor routine
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(...) Why would you use the analog ports for a bump sensor? Isn't that just a contact switch? Tie to a digital port pulled high with a 47K ohm resistor, and have the normally open contact tie the pin to ground when the contact switch is closed. The (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | (no subject)
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(28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | Sample bump sensor routine
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I am having trouble writing a routine for my bump sensors. Evertime I write a program I can't get the analog ports to initialize. I guess this is where you would connect bump switches isn't it. I can get my bot to go forward, turn, and go backward (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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| | re:IR sensors
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Hi everyone, i was wondering if it's possible to drive more than one infrared LED (emitter) through the handy board and IC. Has anyone tried doing before??? i want to model the wall-following behavior in my car, by using emitter-detector pairs on (...) (28 years ago, 3-Feb-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Please add me to the mailing list. Thanks. (28 years ago, 3-Feb-97, to lugnet.robotics.handyboard)
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| | Re[2]: Config 0C / 0D
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Ed, Yes, I got round the problem by using the Newton labs IC 3.1 Beta, which does all the downloading itself. After a couple of tries, it told me that it had reset the config register. I never managed to change it with hbdl, and now I only use IC (...) (28 years ago, 3-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Hi folks a question about ic.
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(...) In regular C, you just ask for what you want by declaring the convert in a statement like... Knob_value = knob(); How_much = float(knob_value); servo_deg(How_much); or save a variable with... Knob_value = knob; servo_deg(float(Knob_value)); (...) (28 years ago, 2-Feb-97, to lugnet.robotics.handyboard)
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| | Nevermind about that int to float question.
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Duh- sorry I just realized that you just typecase the variable however you want it to be. Anyway- visit my hardware hacks page for a laugh if you have time. -Ira (28 years ago, 1-Feb-97, to lugnet.robotics.handyboard)
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| | Hi folks a question about ic.
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Hi, is there some kind of integer to float call in ic? I am trying to write a test servo routine that takes the knob() value and turns the servo to that number of degrees using servo_deg() which takes a float. Any ideas? My board was just recenly (...) (28 years ago, 1-Feb-97, to lugnet.robotics.handyboard)
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| | Display
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Hi- I'd like to separate my display from my handyboard and wire it via ribbon wire so I can view it remotely. Can I do this? How far away can I have the display from the board until it is unable to fully transmit a signal? Thanks, Mike Degon (28 years ago, 31-Jan-97, to lugnet.robotics.handyboard)
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| | unsubscribe
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Hi .. I want to unsubscribe temporary, because I want to turn off my computer in several weeks. Thankyou very much. (28 years ago, 30-Jan-97, to lugnet.robotics.handyboard)
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| | Rating DC motors
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I've got this old Radio Shack RC car that I want to use as a chassis for the HB I'm building. It is the same type car that the Mobot Lab used to build Tom and Jerry. I no longer have the box and I ripped the RC board out of it long ago. How can I (...) (28 years ago, 30-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Buncha bouncebacks
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Sorry, there is nothing I can do about this short of compiling, installing, and configuring brand new mail list software from scratch. The mail list SW my lab provides is very primitive and can't do anything intelligent with bounces. I don't really (...) (28 years ago, 30-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Is 18V correct?
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For the HB, when do you draw 500mA? When you put the interface on "Zap Charge", do you lower the voltage less that 12V? What about when you "trickle" it? Hihger that 12V? (...) (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Buncha bouncebacks
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Fred, I get a bunch of bounce-back messages when I post to this mailing list. Apparently many of the addresses have gone bad. It doesn't really matter, I just delete them, but how does one, as a mailing-list administrator, deal with address (...) (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Battery life
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I just wanted to ask ... in case I charge the HB battery to its maximum, = and then just leave it there to rest ... how long can I expect the = battery to be charged ???=20 Thanks Oriol. (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Battery Life ...
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I just wanted to ask ... in case I charge the HB battery to its maximum, and then just leave it there to rest ... how long can I expect the battery to be charged ??? Thanks Oriol. (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Is 18V correct?
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this is correct. normal dc adapters are unregulated and there is a reciprocal relation between voltage and current. when you just plug it in and and measure voltage, current is 0 and hence voltage is higher than the spec. if you draw the rated 500 (...) (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Rug Warrior Program
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(...) What exactly did you load? was it a .lis file? (It should be) I use the RugWarrior myself, and use handyboard routines as well on it. So please first tell me more. Hans (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Is 18V correct?
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Oh, you hardware guys must really hate us software guys but... I just purchased a volt meter, I had used on in college a long time ago, so I placed the voltmeter across the AC adapter and it read 18.0, I'm guessing this is 18 volts, but I could be (...) (28 years ago, 29-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Rug Warrior Program
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(...) [snip] (...) Well, you say that, but you got this far, didn't you? port_a should be 0x1000, port_d should be 0x1008, declared as int. These are the hardware addresses of those ports on the HC11. Did you get a copy of all the Handyboard (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Re: 68HC11
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JTW, I have ordered from a company in Dallas, TX called B.G.Micro, inc.. They have the 68HC11A1FN for $6.95 and the socket for it. Check out their web page: (URL) Orders only - 1-800-276-2206 Tech support 972-271-9834. I have run across other (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Rug Warrior Program
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I have entered all the rug warrior program and have got it all debugged of all but two errors. By debugged I mean I have found all the mistakes that I made when entering it and got all but two error messages to go away when I attempt to load it into (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Re: High power motor drivers
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Keith Check the HB home page. Fred posted my info for a H-bridge that will handle two 12V-55V motors at 3A each. I know it's not exactly a custom bridge, but you can make the PCB from scratch. The LMD18200 from National makes this really easy. (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Re: High power motor drivers
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You should be able to "piggy back" two motor driver chips. The normal ones for the HB are capable of about 1Amp or .6Amp. Use another 1Amp chip and you should be able to source 1.5Amps. Although, I imagine that using identical chips would be (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Rug Warrior Program in Mobile Robotics Book
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I finally have my HB completed and yesterday I located the Mobile Robotics book at the University of Arkansas bookstore. Anyway what I want to know is can I load the rug warrior program that is in the back of the book as is and make it work. Are (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | 68HC11
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Howdy, I'm looking for a supplier of the 6811 that does not have a minimum order requirement. I was talking to Motorola direct and they had a minimum of 23 pices on theMC 68HC11A1FN. It's true that I'd like to have that many HB entities but I think (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | High power motor drivers
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I need to drive two motors from the handy board and I need a little help building a driver circuit. The motors are 12v ~1.5A motors that are to be run in both directions. I want to use the motor outputs on the handyboard as the control signal to the (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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| | Re: Power Supply
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The FAQ is at the Home Page. (...) (28 years ago, 28-Jan-97, to lugnet.robotics.handyboard)
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