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Please, do not send unsubscribe requests to the main Handy Board mailing list. Instead, send them to me, Fred Martin, fredm@media.mit.edu. I am the only person who can remove you from the list. Thank you for your consideration of others on the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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(26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: voltage regulator
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there is probably some other circuit on your board that is drawing too much power. put your finger on the other chips and see if any of them is hot (there shouldn't be any). if necessary, remove all socketed chips to see if you can get the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: General use PCB
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I too was going to suggest AP having done business with them in the past, however you have to note that they have a 'high density' drilling surcharge. This surcharge is 1 cent for every hole over 24 in 1 sq " of board. Thue "perfboard" (10 x 10 (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | voltage regulator
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The voltage regulator on my board (U13) gets so hot that when i touched it it burned my finger. I am using the recomended 12V 500ma ac adaptor. I have been having problems testing the motor circutry and the red motor lights light up when i turn the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: General use PCB
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(...) Option #1: How about making some of your own? If you need 60, then the prices from board houses start getting pretty low. Check out these places: (URL) made up a small spreadsheet for expresspcb and apcircuits pricing, and at quantity 60 you (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | digital out
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I am in the need for additional digital outputs. I have read the FAQ and found out that to get 8 more digital outs, I have to connect the 'hc374' clock line to any of the unused output latch selects of the 'hc138'. Has anyone done this? If so, any (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Pull Up Resistor
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Hi, The polaroid documentation mentions that a 4.7K resistor should be placed between ECHO and Vcc. Should this be done when interfacing to the HB? Thanks, Sheridan (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Handy Board for Sale!
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To Anyone Interested, I have a nearly brand new complete Handy Board for Sale. I used it one week and unfortunately it does not have the capability to do what I want. It is complete with battery installed, serial/charger board, software for IBM, (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | General use PCB
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We have been using the Radio Shack, Archer board #276-162A. Specifications: Dimensions 3 inches x 4 inches, with copper lands on one side. 30 holes by 25 holes with mounting holes at 2.5 inch and 3.5 inch spacing. We have to told that Radio Shack (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Pull Up Resistor
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(...) The sensor connectors on the HB already have pullup resistors on the signal inputs (as I recall they were 47K), so you shouldn't need to add an additional pullup. If you want to make sure, just check the signal connection with a voltmeter to (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | yet another hb for sale
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One Handyboard, from Gleason Research, specifically GRHB-PC, with all cables, power supply, software, LCD, battery, charger board, etc. Get it with two Lego 9 volt gearmotors (they cost me $19 each) and my key for IC 3.2. Used for one small project, (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | troubleshooting
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I am assembling my handyboard and am at the stage where i have completed the motor and analog circuits. When I test hte analog circuit the LCD screen prints"press START to test knob..." when i press start the board beeps and the screen goes blank. (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | CW TECHNOLOGY
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ALL, Do you know if the guy from CW Technology who sells MiniBoard is still doing selling them. I sent him an email, but no reply so far. Thanx. Hachemi (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | mouse encoders
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hello, does anyone know how to interface the handyboard with a shaft encoder from a mouse? i am interested in using one out of a microsoft mouse, which uses electrical contacts, instead of an optical sensor. what kind of signal is sent from the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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From: (...) I assume you are going to need to do trig functions as well? I've written software that functions as a 2-D odometer, and uses encoders on the two wheels, and I had to write sin,cos,atan2 functions. How are you getting rotational (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | HANDY BD EXPANSION
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | FS: HandyBoard
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I have an extra HandyBoard that I assembled and tested. Never used in a project. Includes: Controller Board 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable Cases for Charger and HB AC Adapter $225 If interested: Mike Davis (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Need Simple IC editor
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Mr. Carmack wrote: <snip> (...) While any text editor will suffice, I highly recommend one called TextPad. It has very powerful features and does an excellent job of formatting source code. It's available as shareware from www.download.com. (Note: (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Where and when to buy a HandyBoard?
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Hi all, I am considering purchasing a handyboard, but Definitly want to get the sensor expansion board when available. 1) Do I need to purchase a specific handyboard in order to get the I/O expansion board to work? 2) Is Gleason Research a good (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Handy board Expansion
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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anton, You might want to think about getting rid of all those square roots. Take a look at what you are really trying to do and decide if you need the square root. For example, if you are just compairing two distances to see which is greater, you (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Need Simple IC editor
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Howdy. Thanks to everybody who gave me advice when I wrote about some basic issues. Your responses included links to a C- compiler, a C tutorial, an electronics tutorial, and more! I managed to get my HB up and running and have begun tinkering (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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the other issue that should be mentioned re: changing clock speed is that it messes up the baud rate of the serial communications. if you plan to use interactive C, would have re-assemble the pcode program with a different baud rate constant, to (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | RE: speed of the board
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You shouldn't lose place if the mouse is serviced by input counters and interrupt routines, so whether 2 MHz is fast enough depends on how often you need the positions calculated from the mouse counters. You won't be able to get that as fast as the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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(...) I haven't used the Polaroid module with my HB, but I have used them a lot with 68332 micro-processors. I does sound like you may have an electrical noise problem (not EMI, but noise conducted through the power bus). The only way I've got the (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | speed of the board
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Hi guys, I am worried about the 2MHz clock speed of the HB. The robot that I am building has a mouse in the bottom of it and I am writing the program to read the number of digital pulses and calculate the position relative to the starting point. (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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You may be trying to draw more current that your external battery can handle. The HB Nicd battery can supply alot of current, both surge abd continuous. This may be why it works in this case. If your external battery is not NiCd, it might cause a (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I had this same problem when I got mine a few weeks ago. I ended up putting a capacitor from pin 1 to pin 3 on U2 of the sonar driver board. I also had to take out the 1k resistor from the BINH. It kept BINH at 1 V instead of Zero and that seamed (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Polaroid trouble again
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Hi! I am having trouble with my Polaroid sonar: When I keep my HB hooked up to external power, I will only get correct readings up to 20 inches. As soon as I use battery power without hooking it up to external power, the readings are correct up to 6 (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I have no experience with the sonar but having followed this mail list for a while ... Is it possible that you are triggering the sonar too frequently? Mike (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | HandyBoard For Sale
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I have an extra one extra controller board that I assembled and tested. Never used in a project. Controller 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable $225 If interested: Mike Davis ipscone@halcyon.com -- ---...--- (...) (26 years ago, 1-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Digital out puts
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Please see the FAQ, specifically: (URL) the answer. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Digital out puts
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Hi guys, The handy board specification does not tell the number of digital outputs it has. I need at least four digital outputs from the board in order to make my robot function. Is there any way I can do this? Thanks, -anton (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | unsubscribe
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please unsubscribe me. I may be in as les@psi.bc.ca thanks (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: power glitch
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Please see the FAQ: (URL) is a known issue, with a simple fix: make sure to bootstrap with the board with pcode_hb.s19. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Update on the expansion board.
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Hi. The beta testers are still discovering issues, so I'm not ready to release the design just yet. I'm particularly waiting for results of multi-servo testing. But, it appears that the basic design is sound, and only minor rework (if any) will be (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | power glitch
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I have just started useing my handy board and have had to deal with many power glitches. I don't know if this happens often, or if something is wrong. It seems to happen at any time, even when I have only turned the board on and done nothing else. (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: beginner
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"Handyboard for Dummys"... No, just kidding. Maybe not just yet. :) Check the HB HP for the "HB Technical Reference". You can download it. Gleason Electronics sells HB kits and Assembled HB's. They have a starter package. Get IC 3.2 from Newton (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | ir reflectance sensors found !!!
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Howdy, When browsing through the catalog of CONRAD ELECTRONICS (www.conrad.de) I found an IR reflectance sensor with build in logic to measure distances between 10 and 80 cm. I requested the datasheets and they arrived today; I am gonna order (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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