 | | HB v1.2, IC v3.1 and ir functionality
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I'd like to get the ir functionality working on my v1.2 handy board. I am using the 3.1 version of IC from newton labs. See below for the files included with this release. According to The Handy Board Technical Reference" Dated Jan 16, 1997, I must (...) (26 years ago, 6-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rolling Ball Inclinometers
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I recall one of the surplus electronics/mechanics catologs (All Electronics? Herbach&Rademan) were selling them for $0.50 -----Original Message----- From: Michael N Rosenblatt <mr4@andrew.cmu.edu> To: handyboard@media.mit.edu (...) (26 years ago, 6-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Two servos, one input ?
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(...) Why do you want to have two servos doing exactly the same thing? Why can't you simply mechanically hook up the two things you want to drive the same way to a single servo? (26 years ago, 6-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Could IR ranging sensors be used with Rug Warrior board as well
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(...) I designed and etched a small adapter board that interfaces three Sharp GPD05 and one GPD02 sensors with RW. It replaces the contact bump switches with the Sharp detectors by driving voltage followers to the level of the resistor ladder used (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Where do I get Sharp GD sensors
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Thanks for the info. I am decided on sharp, because I want to do wall following, now where do I get them. Also, where do I get some code for it, if there are any? Thanks much. (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rolling Ball Inclinometers
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(...) It's All Electronics. 2 for $1.00. 1.800.826.5432. Page 17. Catalog numbers ATS-1 and ATS-3. No real specs for them, but both are pulls from arcade games. (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Linux, and HB beta binaries
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I've run it on Red Hat (5.2, stock Glibc) and I'm running it now on Slackware (3.6, stock). I haven't had any problems either, but I built it from source as well. (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Linux, and HB beta binaries
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Hi Edward, I am running ic on linux since December. I downloaded the _SOURCE_ from the same location as you I think, (ic-src-unix-2.860-beta.tar.Z) and build the binaries on my system to make sure they will use the libraries I have. You also have to (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | 3 used HB
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During the last few days I have received more then 40 offers to buy my 3 used HBs. I am almost done selling the HBs according to the criteria of geographical convenience. I am sorry for all the other people that answer to my letter. ---...--- (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Rolling Ball Inclinometers
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Does anyone know of a place to get cheap rolling ball inclinometers? thanks Michael (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Linux, and HB beta binaries: problems getting started
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Handy Board list: I'm trying to get the handy board running under Linux for a robotics class at the University of Colorado. All the devel platforms are Macs but I'd like to use Linux. I'm having problems getting started, even though I've grepped all (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Could IR ranging sensors be used with Rug Warrior board as we ll
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Hi, I can only speak for the GP2D02: voltage requirement 5 volts very low power range 10cm to 80cm beam width at maximum range is about 1cm 1 input bit and 1 output bit required Cheaper,smaller ,less power, and easier to hook up than sonar I see it (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Two servos, one input ?
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Has anyone hooked two servo motors up to one input? I have a project that requires three servos, but two are an identical pulse. I was going to hook those two up as servo_a7 and run a 1000-1200mA current at 6 volts. I'm thinking that will give me (...) (26 years ago, 5-Mar-99, to lugnet.robotics.handyboard)
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| | Could IR ranging sensors be used with Rug Warrior board as well
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Hello all: I have to ask this question: I am using a Rug Warrior Pro board and handyboard. Could the Sharp GP2d02 or the Hamatmtsu P5507 be used on the Rug Warrior as well. More specifically : What are the voltage requirements of these two? What are (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Power problems?
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To all: I am currently constructing a Handy Board. Am I currently at the step (with the Handy Board) of testing it with the Interface/Charger board. The tests I performed earlier on the charger worked, and the tests so far with the Handy Board have (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Hamamatsu P5587
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I'm not an ASCII artist, so I'll attempt a verbal description. View the P5587 with the emitter/detector side facing you and have two pins on the left and three on the right. In this position pin-1 is in the upper left corner, pin-2 in the lower (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Hamamatsu P5587
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Does anybody have the pinouts or spec sheet for the Hamamatsu P5587 optical sensor? Thanks (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D02 code available
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Thanks Barry, great work. I do have one little question: As I read the data sheet of the GP2D02 ( (URL) ) I saw some timing specifications that i think are not taken care of in your software. Please correct me if I'm wrong. The timing chart shows (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Precise timing with the Handyboard ?
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(...) Use the TIC port 2 or 3. The precision of the reading you'll get is 0.5 us. About a year ago I posted some drivers to make such measurements. Tell me if you want them. cu Tom -- Thomas Hauri ZHW Zuercher Hochschule Winterthur University of (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Precise timing with the Handyboard ?
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Hi, does anybody know how to measure the time between two trigger signals as precise as possible ( around 10 microseconds would be fine.) with the handyboard. Peter -- Dr. Peter Borrmann University of Oldenburg Phone: +49 441 798 3362 (office) (...) (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Psion Electronic Organizer
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(...) I would like to know the same thing of the PalmIII. (...) ---...--- Shoot-to-Win Protect the 2nd Amendment ---...--- (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | Psion Electronic Organizer
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Did anybody hook up a handyboard to a Psion Electronic Organizer? Maybe via IrDA interface or serial cable? Alf (26 years ago, 4-Mar-99, to lugnet.robotics.handyboard)
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| | 3 used HB
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I am receiving several answers. Tonight I plan to take some digital pictures of what I have and answer to the e-mails that I have received. I am located in Metro Detroit , Mi, USA. I would like to charge 150 US $ per HB + shipping (should be between (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D02 code available
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Hi, I just posted a short tutorial and software to use the Sharp GP2D02 infrared ranging sensor with the Handy Board. This sensor is very small, relatively cheap (about $21) and gives an accurate distance reading for objects that are between 10cm (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Skiff board?
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I think it's going to be a Compaq product, actually. It definitely won't be released with the free licensing policy of the Handy Board. It was developed by Compaq and with the support of an MIT student who works for them. From what I know, the main (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Skiff board?
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No, no Skiffs are available until this summer, at the earliest. I jkust tried over the past month to procure one from the Cambridge Research Lab for a project in the AI Lab here and all to no avail... (Hence the Handy Board). gms (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Skiff board?
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(...) Neat, but it doesn't look like the design is being released. Any way to get one of these? Thanks, Duncan (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | 3 used HB
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I have 3 Gleason Research Handyboard for PC (GRHB-PC) that I would like to sell for half price or less. Mint conditions , I still have all the boxes. I have finished my project succesfully. Does anybody have a suggestion where to sell used (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Java and 68hc11
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The Skiff board actually built around a 200 mhz StrongARM processor (acquired from DEC). Fred In your message you said: (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Java and 68hc11 (Skiff)
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Actually, the Skiff uses a StrongARM SA110 processor. The board was used this year by MIT's 6.270 robotics course in place of the 6811 design. I haven't heard how the new design worked out. Maybe someone on this list has some details (?) - Brian (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Where to buy handyboard PCB
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(...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Java and 68hc11
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Interesting ! Another cool site is (URL) a JVM for the 68hc11 can be downloaded with all the instructions about it If someone of you likes Java, this can be quite nice. Bye Stefano ---...--- (...) on (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Java and 68hc11
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Check-out the Skiff project at : (URL) seem to be using Java on a 68hc11 board. (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Stepper Motors
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I purchase the motors from Jameco. I connected the stepper motors on the motor headers. From left to right ( left meaning next to the RJ jack ) in this sequence: Brown, Skip,Red,Blue,Skip,Yellow. What do you mean by the pattern in the LED's ? (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Java and 68hc11
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Hi, do anyone know something interesting about java virtual machine porting on 68hc11? And do you know if is it possible to write some high level code for the controller using Java ? (Maybe for some low level routines c is needed). (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Where to buy handyboard PCB
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Hi there, I plan to build my own handyboard, so I need to buy the components. I already know all the necessary components, but I have trouble getting the handyboards Printed Circuit Board and the Interface/charger Printed Circuit Board. I already (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | wookie file viewer
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Excuse me, can anyone suggest me where to find a wookie viewer for s.19 files ? Thanks to everyone. Stefano (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | wireless modem
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Has anyone tried to control the handyboard using a wireless modem (e.g., as a slave to control a mobile robot)? If so, what kind of modem, and what issues needed to be dealt with? (Please e-mail directly to me since I'm not on the list.) Best (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Updated HandyBoard Machine Code Programming System
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Hello All, Due to requests, from the HandyBoard list and from students in my Microprocessor subject, I have updated the Editor / Compiler / Download (HandyBD.EXE) on my site. (URL) I have not yet updated the Buffalo Monitor routines) The new program (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re:
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Maybe this would be of some use wrt hacking the RS tape measures ... (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board and smooth PWM
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the exp bd doesn't need a new pcode_hb.s19, so there's no problem. fred In your message you said: (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Expansion Board and smooth PWM
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Question. Since the expansion board requires a new lib_hb.c and the smooth PWM routines require a different lib_hb.c and pcode_hb.s19, can we have both expansion board and smooth PWM together? John Schneekltoh (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Edit the gerber file !!!
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Hi.Anyone of u knows how to edit an image in GC-Prevue?The problem is that I cannot get the accurate negatives of the hb solder side,as there is a bit of shorting that occurs in the image file created by GC-Prevue for the exact resolution,whereas (...) (26 years ago, 3-Mar-99, to lugnet.robotics.handyboard)
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| | Re: serial communications
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Dear Casey Russell, When pcode is disabled, the handy boards stops treating the data received on the serial port,in the manner the pcode wants it to. The bytes it receives through the com2 port is then just plain data for it. It should know what to (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: wireless communication
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I'm glad you mentioned the Nuts & Volts article, "Naked Data"! I've used the MING microdevices RF transmitter and receiver units with success! The 1200 bps isn't fast but great for small projects such as mobile robots. I used the MING RF units with (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: wireless communication
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for RF communications, I recommend Linx Technologies (URL) They sell seperate transmitters, receivers, and antennas. For two-way communication, you would need two pairs, so the price is around $30 for a bidirectional link. They have speed ranges (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | wireless communication
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After reading some of the discussions about wireless communications, I remembered an article from Nuts and Volts ( (URL) ) May 1998. The title of the article is "Naked Data", Explore the power of wireless data communications using inexpensive (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: I have made a i2c routine for the handy board
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I would be interested too, thanks in advance... :-) Victor G. Ruiz Aranda ruizvic@mx1.ibm.com Coordinador ASCA/IAS Planta de Manufactura T/L 877-7306. Ph Number 011-523-669-7306 I/T (Information Technology) Guadalajara, Jal. Mexico. Laszlo Roska (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: .asm --> .s19
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The original IC and pcode was originally written on a Unix machine. There are scripts and a makefile that simplify the compile procedure. I use a Linux PC to modify the pcode all the time. If you have access to one, download the original pcode (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: .asm --> .s19
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There is an article in DDJ on the WOOKIE 68HC11 emulator in Mar 99... There are files in www.msoe.edu/eecs/ce.../resources including GNUs gcc C compiler with a back end for 68HC11.. I think that it is targeted for the rug warrior. You may need to (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | .asm --> .s19
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Hello I made some changes to the pcode_hb.asm file (by Julian Skidmore for the 100 steps PWM) and I need to compile/assemble it into a .s19 file (pcode_hb.s19) before I can download it onto the HandyBoard. It seems to me that I require both a C (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Polaroid sonar problems
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I also found that my neon light in my magnifying lens lamp caused erroneous readings. When I turned it off or moved it away the readings normalized (gave the correct results). Shielding wasn't effective in this instance. I did completely away with (...) (26 years ago, 2-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid sonar problems
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(...) I assume that your sonar pings (makes a clicking sound). If so, then you may be getting a premature echo. You might try mounting the transducer in putty to absorb vibration. You could try lengthening the blanking interval to make sure that the (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Bipolar Stepper Motors
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First thing take an ohm meter and "read" your coils. From any wire you should have one other wire at a low resistance and two at a high resistance. This will first determine if you have it wired right. On my steppers the outside two form one coil (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: I have made a i2c routine for the handy board
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i would be interested. thanks (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Bipolar Stepper Motors
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Hi, everyone. I was wondering if somebody could help me. I am trying to control a 2 phase bipolar stepper motor. I found a web page at : (URL) talks about controlling bipolar stepper motors. But I just can't seem to make it work. When I use the code (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: serial communications
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some days ago i played with this too. i send you my files ... hope it helps ;) /* beginning of serial.c */ int char1; void disable_pcode_serial() /* necessary to receive characters using serial_getchar */ { poke(0x3c, 1); } void (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | serial communications
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I want to disconnect interactive C from the handy board and send instructions to it via the hyper terminal on Windows 95. I have followed the instructions given in the HB technical reference. I am confused as to the procedure for accomplishing my (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Mindstorm hacking program
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I heard that someone at MIT created a program that can hack into and advance Lego mindstorm's computer. Does anyone know where i can find this site where i can download the program? =) chen (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Working with Legos
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Servo Tape: Available at R/C suppliers, this is sheet rubber with very strong stickum on both sides. The only problem is that it will creep, so if the part will be under stress you should augment servo tape with either Ty-Raps or a fillet of (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Wheel encoders
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(...) Yes, the pulley wheels near the drive wheels were drilled to accomodate 0.1" dia. disk magnets, available at the local hobby shop. The magnets activate the Hall effect magnetic sensors that are tucked away into the chassis (not easily seen in (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Polaroid sonar problems
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hi! Our group is still struggling with the polaroid sonar. We can't get any coherent reading, only readings that are in the range 470-515, which aren't effected by the measured distance. We have the capacitor and resistor installed as required. We (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) Some time ago I did come across a site that talked about hacking a sonar tape measure. I can't remember where I saw it but I am confident that I had encountered it by searching "sonar" on one of the major search engines. You could be more (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Mindstorm hacking program
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(...) You may want to start off by checking out: (URL) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | 9600 Baud Serial Input Drivers?
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Fred and Others, I got hold of your 9600 Baud Serial Output drivers - thank you very much. Is there anyone from this list who have done the same thing the taking in serial input data using the PORT A pins? And another questions, about serial (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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Thanks for posting the pics ... great casters! Are you using the pulleys with near the driven wheels to sense wheel rotation? - - - Nick - - - Will Bain wrote: <snip> (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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(...) No problem--here it is: (URL) pretty sketchy, but I hope it helps. -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ ' ` ~~~...~~~ ` ~~~...~~~ Wendy Parson, If you steal from one author, it's plagiarism; Will Bain, if you steal (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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The LEGO purists may not approve of this, but it does work well and it makes it relatively easy to use non-LEGO components. You *do* need to be cautious about what type of glue you use. Many glues will not adhere to the LEGO plastic, others will (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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I glued a couple of the thin Lego strips to the bottom of my HandyBoard to make it quick and easy to plop the board firmly onto a Lego base yet still have it easily removable. Doing this you must be certain to get the correct Lego spacing, so first (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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Some of the sensors that I've used easily attach to the the plates & hlocks with holes using a set of tiny nut, bolts, and washer(s). No damage done to any of the components, and easy to change your mind about where you're going to put it. -kr (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | I have made a i2c routine for the handy board
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Hello, You want to use the i2c bus (by the SPI connector) with your handy baord ? I have made a routine to use i2c component (PCF 8574, 8591.......) with the handy board. Do you want it ? See you later. Dperonne@aol.com (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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My only tip is to stay away from cyanoacrylics. I used superglue to try to attach a motor to a brick, and it started eating away the brick. Stuck like a champ, but I had red "puss" all over the place. (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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(...) That's an excellent suggestion. Thanks, Max. There are many other tips on Lego robot construction techniques in an article titled The Art of Lego Design by Fred Martin. It's available for download from the Handy Board web site: (URL) have been (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Working with Legos
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I have found a simple way to attach non-Lego motors to Lego components. I just use a band clamp as is used in plumbing to tighten the motor against two Lego axles. There is a picture and further details to show how this works at (URL) anyone else (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | RE: Schematic, PCB freeware
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Thanks for the info guys, I found several good candidates among the suggestions. Clancy (...) (26 years ago, 27-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Schematic, PCB freeware
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Dear Clancy, Try looking at ftp://bode.ee.ualber.../softw/ibm Yours sincerely, Nitin (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard >32Kb RAM
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(...) Actually its 64K for the HC11 cause it has a 16 Bit address bus. 16^2 = 65536 = 64K But the upper address space is used by the I/O and expansionboards. There are some little empty spaces which could be used for additional RAM. There are (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Schematic, PCB freeware
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Depending on how many components you want to use, there is an evaluation version of EDWin around that works quite nicely. Very simple to do circuits and stuff like that, with a good library of bits. Yes even an autorouter. It can also do multi-layer (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Static sensitivity
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I am starting to install I.C.'s on my board and I was wondering are any of the chip's on the handy board static sensitive? which is to say if I touch it I will destroy it, without having somekind of static gaurd. ___...___ Steve Wall Sir Sandford (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Handyboard >32Kb RAM
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Hello again, Sorry I made a calculation error. If the processor is 8-bit then 32K is the maximum possible RAM. So I think no upgrade is possible. Hans Venema j.venema@wing.rug.nl (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | More than 32Kb RAM?
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Hello, Does anybody know if it is possible to build a handyboard with more than 32Kb RAM? I do not know the exact details of processor, but if it is a 8-bit processor it should be possible to build a handyboard with a maximum of 256Kb memory! And (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Schematic, PCB freeware
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(...) Try this software: www.expresspcb.com Though, it doesn't have an auto route function, but this is good for simple pcb design. joema (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Schematic, PCB freeware
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Does anyone know of a good but simple to use schematic an PCB design freeware program out there on the net?, I have downloaded a few but they vary complex and hard to learn for the simple board I need to create. I like something with a good (...) (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Static sensitivity
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(...) You should probably ALWAYS assume that any IC is ESD (electro-static discharge) sensitive and take all precautions. Mike (26 years ago, 26-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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(...) Of course... have you ever listened to your radio in the house before? (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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Has anyone hacked the sonar out of a sonar tape measure? Radio Shack sells sonar tape measures for about $25.00, that's half the price of buying the transducer and sensor together. I mentioned in a previous posting that I am interested in running (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR outputB
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(...) i do not have the Mobile robots inspiration book, but i think if you want to use it in a good way you will have to flash the right led for a time, check for reflection, then switch it of and check if there is also reflection (then it was (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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I am looking at the Schematic in the HB HP right now. It looks like the 1K resistor is connected to the visible LED. From the schematic, it looks like you can connect a resitor and IR LED in series to the "3-pin female header" to make your (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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I had intended the two types of interfaces for different purposes, but, I assume RF does not need line of site work. R/C cars for example can be controlled from several rooms away in my house (worked with one on a telepresence implementation). I (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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The software written by Max Davies should allow transmission as well as receiving. The information that I have doesn't include the hardware layout but as far as I understand the 1K resistor in the IR transmission circuit on the board should allow an (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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I heard that radio waves do not need "line-of-sight" like IR does. Can someone with more exerience verify or dispute this? It makes sense since longer wavelengths of EMR can bounce off surfaces easier. So maybe your Lynx device is better. ---...--- (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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So, it seems like the short answer to this question is no one knows what to attach to correctly and safely (to prevent HB damage) allow IR transmissions from the HB :) I understand the receiving capabilities, as they are documented and have routines (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Another IC error: "Out of memory"
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Hi everyone: I went back and rethought this: (...) I played around it it some more, removed the 'scamper' gait, and got the size of code IC loads down to 12500 bytes, and the error is gone. I'm not sure if this means I have some 3k of variables, or (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Another IC error: "Out of memory"
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Thanks again for all the help with the "yacc" error I experienced before. I'm having new code resourcing problems now: mainly a problem with my 1994 version 2.851 interactive c. It loads my libraries, and I'm getting an error: "Out of memory (tried (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | RE: IR outputB
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(...) It is not the bouncing off of things but the passing through them that makes RF able to operate without line of sight. Line of sight gives greater distances, though, even with RF. The Lynx Tx/RX will definately have a greater range than the (...) (26 years ago, 25-Feb-99, to lugnet.robotics.handyboard)
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| | Re: How to measure the signal Voltage ?
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not knowing anything about the sensor, but guessing (hoping) that it behaves like an open collector gate, this is what i would do--fool with the sensor on the bench to determine how it works before i let it near the HB. 1. power up the sensor, (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Print to LCD
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I certainly do! Spent a lot of effort working developing a machine code interface for the Handyboard. One of the biggest hurdles was getting messages to the LCD display. If you look on the Handyboard home page, in the contributed section: (URL) will (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Parts availability
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(...) I was able to follow the parts list and get most of the things from the suggested supplier. (...) (eqivalent?) (...) I thought that I got the memory from Jameco, but I think BG-Micro sells it was well. I would also think they both might carry (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR outputB
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Is the IR reciever on the HB the same thing as in the robot in MR:ITI book? I though it would be different. In any case, you can but...the reciever is more effective as a "wireless communication" device that can recieve various IR codes which you (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR outputB
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(...) o Hi Did anyone receive an answer to this. I ant to connect a Radio Shack (276-143) IR LED to the IR output and am wondering what resistance to use. Also, I saw a design in Mobile Robots..Inspirition where they use two IR LED (one on each (...) (26 years ago, 24-Feb-99, to lugnet.robotics.handyboard)
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