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Hi everyone, I'm looking to build a mobile robot for research purposes. I'm looking for an existing drive system if available in the market. I don't want to build a new drive system. I only want to work on the sensor configurations, etc. Does anyone (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Adding a brain to the handy board
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(...) Never thought about adding this to the handy board, but I have thought of building a computer around the PowerPC that was handyboard like (self contained, motor drivers, LCD, memory, expansion, but add *LOTS* of IO, interrupts, and memory). (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Adding a brain to the handy board
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I am thinking about starting development of a processing board for the handy board. Here is what I mean: Power PC 8 or 16 MB of RAM ( want to use those SIMs I had to buy for my last desktop computer) Input for Video (like a quickcam, could even stay (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | IR decoding
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Is there any way to turn off IR decoding? I see in the library file that PWM and LCD printing can be turned off. Thanks. -John (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | handy board crisis II - read this!
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Now THIS is weird. The battery light status seems to depend on the light going to the Sharp IR sensor now!!! If I expose it to light, the battery light turns on. If it's dark, it turns off. Modulated IR light makes the batt light flash. Have I (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | handy board crisis!
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Well, let's see. I was rewiring my handy board so that it would run on 9.6V again, and everything seemed to be going fine. I soldered the pack back on with no problems, and was screwing the board onto its case when something horrible happened. The (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Quad encoders = the code
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I have been successful in coding the Quad encoders. You will find below: - The source for the asm file - The source for the C file - the ICB file Thanks to the assembler on the web. I tried to use some of the Macintosh tools from the 68hc11 MIT FTP. (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Porting as11_ic to mac
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In your message you said: (...) all right dave! this wpuld be a great service to the mac community. the answer: yes, that is all the c precprocc is doing, generating 2 calls to the as11. it assembles the user pgm at two diff points in mem so that ic (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Porting as11_ic to mac
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IC users, I was thinking of perhaps porting as11_ic to the mac and I think I understand exactly what is going on in the unix script except for one thing. What is the C preprocessor doing? Is the only purpose of the C preprocessor to declare the two (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Can't initialize CONFIG register
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In your message you said: (...) ok. the dlm *is* trying to write the one byte, because the config reg lives at 0x103f. and it's trying to write it as 0x0c, which is also correct. but apparently it is not working, b/c you say that when you run the (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Re: IC serial hog?
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yes, it is possible for an ic program to use the serial port. see randy's instructions at (URL) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Sony IR decoding routine!
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ic is very sensitive to linefeed termination in icb files. if you are runnnin on an ms-dos system, i believe it requires unix style (e.g., ctrl-j) termination, rather than ms-dos ctrl-m ctrl-j style. try removing the ctrl-m's from your copy of the (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | IC serial hog?
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Is there any way for my IC program to use the serial port? I am guessing the answer is no, as IC needs it for communicationg to the host computer. (Mac in my case.) So then the question becomes, is it possible to modify IC so that I can use the (...) (29 years ago, 12-Feb-96, to lugnet.robotics.handyboard)
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| | RE: Sony IR decoding routine!
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I'm having trouble getting sony-ir.icb to load. Every time I try, I get the following error message: FATAL INTERNAL ERROR: ILLEGAL LINE IN .s19 FILE I've re-downloaded and installed both the sony-ir.icb and pcode_hb.s19 files but continure to get (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | NEW! - Handyboard Hard-to-Get Parts Kit!
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CW Technology is now offering a kit of only the "hard to get" parts for the Handyboard 1.2. Basically, the kit includes everything you can't get at DigiKey and Mouser. The price is very competitive if you consider the minimum orders, shipping, etc. (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | Can't initialize CONFIG register
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Hello, Everyone: Help! I'm trying to configure the HB. Here's what I get: C:\IC> dlm config0c.s19 -port COM2 -eeprom DLM: 6811 File Downloader... etc. Using COM2 Downloading to EEPROM Downloading config0c.s19, press ESC to abort Downloading eeprom (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | Re: charger board problems
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You could just get an adapter that is rated for a lower voltage. Try a nine volt adapter or a universal one that you can experiment with. -Fred -- This message was composed using Articulate Systems' PowerSecretary. Please forgive any sloppiness in (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | Re: charger board problems
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(...) Or just use different motors. ;-) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | charger board problems
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I've managed to stick a wire onto a point in my battery pack which yields 6V. (temporary solution, at least...) However, the charger board doesn't seem to like this new arrangement much. With the lower battery voltage, too much current is flowing (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | battery voltages
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I'm currently trying to get 6V out of my 9.6V battery pack. (I actually looked around for a 6V one, but couldn't find one that would work...) I've opened up the pack, and can access the cell where I can get 6V. However, I'm not sure how to get a (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | Quad encoders
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Thx to the advice of many of you I am using encoders from mice as shaft encoders. The code in the libraries does not seem to take into account encoders with TTL signal in quadrature. Therefore I do not get direction from the current software. Maybe (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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(...) Brian> But then the question still remains, how can I define a list of Brian> consecutive memory locations in a .icb file and then access Brian> them from within a loop in a .c file? [ ... ] Brian> Anybody run into this before or have any (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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OK, OK. RTFM, I know. I looked at the on-line manual, and now realize that IC arrays are different than normal C arrays, and so you can't do stuff like int m() { int *address; address=&a0; address++; } But then the question still remains, how can I (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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OK all of you IC gurus. How come I can't do this: int m() { int *address; address=&a0; address++; } a0 is a variable defined in an .icb file. I also can't do something like address=address+2; or address[4]=7; Why not? This is all pretty standard C (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | Re: 5mm range reflectance sensor
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(...) Very nice ASCII graphics. I don't know this part but assuming that the + and L pins are the pins which control the transmitter, and asuming the reciever is a photo transistor that should act as a switch, I would say that you should connect the (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | 5mm range reflectance sensor
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Hello, I've got a 5mm range reflectance sensor which I am trying to get to work with the handyboard, without much success. Here is what I have: DigiKey part #: OR506-ND Manufacturer #: EE-SB5V The labels on the leads are as follows: .--- (+) .--, / (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | announcing the HB Expansion Board version 2.0!!
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Greetings all, The Handy Board Expansion Board version 2.0 design is complete! I'm pretty excited about the feature set, which includes a bunch of things not on the older (not released) expansion boards: * high-impedance analog inputs * PIC (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Caster Substitute
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While there is some discussion on robot bases, let me add a bit about the "third wheel", usually a caster, used on differential drive systems. Casters have the advantage that they are plentiful, cheap, and come in lots of sizes and configurations. (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Using cheap RC chasis as 'bot
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I used a Fischer Price RC car: well built with two gear settings and quite battery efficient. Once the RC receiver was ripped out, there was plenty of space for the Miniboard to be mounted internally. However, I chose to mount it on top in a (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Re: battery voltages
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(...) I'd use 6V instead of the 9.6V main power supply - connect it where the main battery terminals are. It'd be really nice if the handy board had a way to use voltages other than 9.6V for the motor driver chips, ya know. :-) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Robot Chassis
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Given the extensive traffic concerning robot platforms, I thought I'd add my two cents: For my senior project at Cal Poly I made a robot that had three wheels, two of which were independently driven and one which was a small caster. The chassis and (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Re: battery voltages
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(...) Yes, and the current capacity would be the same, since excess voltage gets dissipated in the HB's voltage regulator. -Fred (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | battery voltages
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Regarding the use of a 6V ni-cad pack to solve my over-voltage problem in driving small motors, could I still use my current 9.6V pack, but simply insert a tap into the battery at somewhere close to 6V? Seems nicer than buying another battery pack, (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | RE: Connected Radioshack truck
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(...) You know what makes REALLY good REALLY cheap shaft encoders? Mice! Get an old mouse that has a broken button (that's usually what goes on mice) and pull it appart. Sometimes, depending upon the kind of mouse, you can get really luckey, and be (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Connected Radioshack truck
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(...) (snip) (...) I also have one of the Radio Shack RC trucks. A good solution for shaft encoding would be to glue a couple (or 4) magnets to the inside rim of the rear tires. Then glue a hall effect sensor to the axle. When the wheel spins, the (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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(...) This would be great! I've always known that my mechanical skills were nowhere near as good as my electronic/programming skills, and getting a suitable base set up is a formidable problem for me. Something like what you propose would be the (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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(...) The biggest problem with tank like drives is the marks/scratches on the floor. Any robot with any weight will probably damage a maple or other hardwood floor in short order. They work fin in a lab with waxed tile floors that no one cares (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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OK, time for me to chime in on this thread... The biggest problem, IMHO, with using a cheap RC car/van/truck as a 'bot base is that they all use Ackerman steering (two non-steerable driven wheels in the back, two linked, steerable, non-driven wheels (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Connected Radioshack truck
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like Ram, I connected successfully a radio shack RC truck (4WS) to the handy board. for the DC motor controlling forward and backward speed, I found the 2 entries of the h bridge connecting the motor. I replaced the cheap front end steering servo (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Using cheap RC chasis as 'bot
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Hello All, Concerning the thread of RC chasis with the handyboard, I've done that (albeit with the 6.270 board) and found that it was not that tough. I was fortunate to find a decent RC van setup for only $20. It was some time past Xmas of last year (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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