 | | A fast light sensor?
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Ummm, Hi all I'm looking for a circuit that will interface a photo transistor or a photo diode to a digital input. I tried a photocell in an analog port but it's too slow, I want to use a *visible* light pulse as an accurate trigger: ie. input (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Battery Level Indicator
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I have been playing around with trying to make a battery indicator on my Handy Board. I did find the below diagram from a earlier posting in March of 98. BAT --------R1---...---*---...--- Analog5 Input +ve (10K) | (Active) R2 (4K7) | *---...--- Gnd (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D05
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I would like to use the Sharp GP2D05 infrared detection module with HandyBoard. Any hints/suggestions/clues will be highly appreciated. I'm from the PIC generation and am a newbie to the HB and the 68HC11 Thanks in advance, Ranjit (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | IC
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Dear Mr Fred Martin/friends, Thank you for giving the site of the new library files.We started IC properly today.It gave NO 'synchronizing with board' errors. We input 1 + 2; and it gave the proper result.However when 123 * 2; was entered at the C> (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | dig and analog address
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could someone please tell me the address of digital ports 2,6,7 and all the analog ports? For some reason or another I'm having software troubles and I'm having to map these myself.... Thanks for the help, Owen (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | handyboard mailing list
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Please include our names on the handyboard mailing list. Chen-Yung Hsu hsu3@cooper.edu Damee Choi choi5@cooper.edu Lee Jung Kim kim6@cooper.edu Thanx! =) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Java on Handy Board?
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Handy-folk, I recently discovered that there is an experimental version of Java for the 68HC11 microcontroller. Cool! It has been in field testing since June, and looks promising. The developers tell me that a beta version should be released in a (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Re: IC
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i am unable to reproduce the problem. perhaps comms between IC and your board are still unreliable. try writing a program that repeatedly prints to the LCD screen the result of 123 * 2. my guess is that it will work perfectly. also, make sure you (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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I remember the Basic Stamp "POT" command which is used to read the position of a pot using a digital port. The Basic Stamps are made from PIC microcontrollers and the digital ports are bidirectional. That is they may be used as digital inputs or (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | IC PROBLEM
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Dear Mr Fred Martin/Friends, I had written to the handy board mailing list about a rover that we are making at VESIT-Bombay-India.We were encountering some problems in starting IC,it was saying 'Synchronizing with board' and hanging. I had received (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Douglas Electronics Expansion Board.
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I ordered the kit the first day I could. I got it last Friday, and put it together over the weekend. The douglas board comes with NO assembly instrictions! These are some notes that ought to make things easier for others: RP1 & RP2: The both have a (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) Just thought I would add that it *is* possible (if a bit slow) to read an analog signal w/ a digital port by timing the decay of the signal thru a RC circuit...not a particularly precise method, either. < Watching for the Fedex guy bringing my (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) A digital port can't have the capability of an analog port, since it has only one bit of information with which to work. (A 256-value analog port has eight bits.) You could perhaps hook an analog sensor up to a digital port using some sort of (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: IC PROBLEM
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yes, you are having lib conflicts. you should get the latest at (URL) latest has _raw_analog in the .icb file and NOT in the lib_hb.c file. re: synchronizing probs, try running IC in a full screen DOS window, or boot your computer in DOS mode. the (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Scrolling through the LCD messages by the knob
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Hi Gustav, ich habe für mein HB ein Menüprogramm geschrieben, mit dem man mehrere Menüpunkte durchscrollen kann (Parametereingabe etc.) Falls Du noch interesse hast, sag Bescheid dann kram ich mal den Sourcecode bei mir wieder aus ! Tschau Bernd (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: cant control motor speed
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Hi Jeremy, Question: Do you use 30V for your Motor ? (external) IF NO: I´m testing several Motors from copier-machines (12V-24V) with my HB. Some motors didn´t work properly with PWM. For example Motor 24V I´m using ist with for 12V Motor (0,100) (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Repost: CD-ROM used as Audio CD player
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Hi, there must be somebody out there (except for you, Phil, thanks for your answer!) with useful informationon ;-) (...) Best regards, Alf (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Dear Mr Fred Martin/friends, The handy board assembly manual speaks of a custom testing software needed to test memory. I want it urgently to test memory ICs used on the handy board to find whether they is working properly. If you know where it can (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Readings
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yes, memory wires should be oscillating, back and forth betw 0 and 5 volts. this is not floating; floating implies not connected. re: your other DL probs, usually, it is a bad connection on the PCB. try continuity checks on the memory subsystem. (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | ROVER
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Dear Friends, I had written to you about a rover we are making at VESIT-Bombay -India.We had encountered some problems regarding downloading the pcode_hb.s19 file.I thank you for the advice that you have offered us in this context. If we now (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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