 | | pointers to functions
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is it possible (with some trick) to pass a pointer to a function in interactive C? more specifically, on the free version of interactive c? i have tried, but it always gets me the error that i am tring to use a <function> in an expression. (in (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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I would like to also know about this. Please email me if you have info! thanx =) chen (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Off the subject question...
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Ja, a laptop would work. Even better, cheaper, why not use a good old desktop coputer? Then you could just have the components you need, IE a motherboard, a removeable video card, sound card, the amount of memory you like, etc. Best of all, the (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Memory peripheral device
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(...) Sure it can, provided: -you can get the voltage output to be in a respectable range for the HDD (solved by changing battery power to output chips) -you can write a driver using the necessary digital inputs/outputs as necessary (hard but (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: unknown HB messages
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I had the same problem. I tried everything, even replacing the CMOS memory chip, to no avail. Since my board was purchased assembled from Gleason, I ultimately swapped them for a replacement which has been working perfectly. I don't know whether (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | unknown HB messages
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Hi. Have any of you guys out there had experienced getting a MEMORY FAULT message from the HB or getting garbled displays ? I really hope someone could tell me what this means and what should I do about it. Thanks in advance. F. Samonte (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Off the subject question...
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(...) Yes it can. (...) Well, without modification, the parallel port can probably do a lot of what you need, although, there are only 8 (12) bits for you to use. A separate processor could communicate through a serial port, and do some of the same (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Memory peripheral device
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Great ! I thought no one could have done or imagined something like. The problem, I belive, is that no massive memory storage device (massive: about 1Mb or 2, or 512 KB ...) has an input that can be interfaced with the handyboard or with another (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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(...) I have a question for you guys. Why are you using the Handyboard to control the car? The SBC332 board on the cognachrome system is a very powerful microcontroller and is fully capable of handling the actuators on your car. As an example, check (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Memory peripheral device
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I too would really like to use a Mini Hard-Drive on my Handy Board robot. (URL) and Mobile Phone use micro-controllers, don't they? Can a HC11 write/access data to/from HD sectors? If anyone out there has any idea's or info, be sure and let us know. (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Off the subject question...
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Hi all, The Handyboard is a wonderful piece of equipment. Lots of fun and simple and easy to use from a newcomers standpoint. I have learned much from messing around with it and plan on doing so for some time. I am by no means finished. Right now I (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: crystals and voltage monitors
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You can order these parts in small QTY from Dallas. Their web page has all the information. I just did this and the cost was $1.50 each for 10 and $8.50 for next day delivery. (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | RE: HB & unmanned vehicle system
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I am new to the robotics field but can certainly share with you what I am doing. I first read the book, Mobile Robots: Inspiration to Implementation by Joseph L. Jones, et al. The book contains a good overview of the various components in building a (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: crystals and voltage monitors
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For the crystal, Mouser Part No: 520-HCU800-S Description: ECS HC-49/U-S MICROPROCESSOR CRYSTAL CRYSTAL 8.0 MHZ Substitution can be made. Make sure it is low profile though. Cost is $1.55 at Mouser. DS1233-10 Allied Part No: 671-0125 but they want a (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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CAN = Controler Area Network (...) -- Thomas Hauri ZHW Zuercher Hochschule Winterthur University of applied sciences Technikumstr.9 /PF CH-8401 Winterthur Switzerland Phone : +41 52 267 74 79 Fax : +41 52 268 74 79 Mail : har@zhwin.ch HP : (URL) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Memory peripheral device
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I,m trying to give to my 68hc11 board a memory mass storage device, like a floppy reader, or a disk, or a disk on chip, or a PCMCIA memory card interface, I found a way but I'd like to know if someone of you did something like this before me. Thanks (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Memory peripheral device
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I,m trying to give to my 68hc11 board a memory mass storage device, like a floppy reader, or a disk, or a disk on chip, or a PCMCIA memory card interface, I found a way but I'd like to know if someone of you did something like this before me. Thanks (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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Excuse me what is it a CAN controller ? Stefano ---...--- (...) a (...) communication. (...) to (...) transmitted (...) system. But (...) slow. (...) serial (...) framegrabber) (...) Maybe (...) the (...) useful (...) Some (...) be (...) (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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Hi Bill we are using a NewtonLabs cognachrome system on one of our model cars. The car is equiped with a Handyboard, a cognachrom system, a camera, and a couple of RS232 to CAN converters. Our Handyboard has a CAN controller attached to it for (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Vision on the Handy Board?
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I hade the same idea, with a parallel port camera, just to see what can happen. If I'm not wrong it is possible to use a parallel port -> RS232 interface. Am I wrong ? Stefano Falconetti ---...--- (...) recognition? (...) any (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | crystals and voltage monitors
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Hi. Does anyone have current part numbers/vendors for the 8MHZ crystal and the U12 Voltage Monitor on the Handy Board? Are the correct values available from digi-key? I saw they carry both crystals and voltage monitors, I just don't want to order (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Vision on the Handy Board?
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Has anyone tried to connect some sort of a camera to the HB? Would I be asking too much of the 6811 processor to do some simple pattern recognition? I was just curious to what extent I could push my board to. Thanks for any info! Bill Denzel Senior (...) (26 years ago, 10-Mar-99, to lugnet.robotics.handyboard)
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| | Re: HB v1.2, IC v3.1 and ir functionality
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Dear Edward, I don't think you need the r22_ir.lis file.The file sony_ir.icb is available at (URL) . Yours sincerely, Nitin (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: basic trigonometric functions on the handyboard..
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Dear Berg, You can perhaps express cos^-1 in the forms of a Taylor series and use that series for finding the approximate value. I have however not tried it. There is no math function for inverse cosine.Refer to handy board manual available (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: basic trigonometric functions on the handyboard..
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A Taylor series isn't the way to go: they converge far too slowly. Here is a polynomial fit to arccos(x): arccos(x) ~ = 1.5708 - 1.0927 x + 4.358 x^3 - 0.8340 x^5 It differs from the exact value of arccos(x) by no more that 0.08 radians (4.6 (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: basic trigonometric functions on the handyboard..
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The attached GIF shows the Taylor series of the arcsin and arccos. arctan=arccos/arcsin. I haven't tried to implement these formulas on a 68HC11. 3 to 4 steps are quite precise already. Jeroen van der Vegt. -----Original Message----- From: Raymond, (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: basic trigonometric functions on the handyboard..
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Hi, The taylor for cos^-1 goes: cos^-1(x) = Pi/2- (x + 1/2*x^3/3 + 1/2*3/4*x^5/5 + 1/2*3/4*5/6*x^7/7 ...) (which in fact is simply Pi/2 - sin^-1) The results are very good for small x. For x close to 1 you need many many elements of that series to (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Polaroid Sonar
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Hi all, I don't know the Polaroid Sonar.... Do you have photo of it. Do you have schematics.... Thanks Dperonne@aol.com (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Serial routines for PA7 at 2400 Baud
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Hi, I read somewhere taht if i want to use pa7 with 2400 baud that i'll have to modify the LDAB 37 to LDAB 148. Is this the only change ?? If i try to use this, and i send 0b11111111 on the HB, I get 0b11000000 on the Host (if i try 0b00000000 i get (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Help!
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Hello Everyone! I have a problem with my Handyboard. Until last week everything was ok, but now.. At the moment I can put the Handyboard in bootstrap mode,and download pcode. But I do not get the Interactive C message and the beep! So I guess is a (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | 20 X 4 L.C.D Screen?
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I put in an e-mail yesterday about using a different L.C.D, I made a mistake and said it was a 20 X 8 I meant a 20 X 4. I thought that there was a way to use a 20 X8 L.C.D instead of a standard 16 X 2. My question is is this possible, I thought I (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | System time
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Hi, Have anyone developed a system time on the handy board ? Please advice me... Regards, James (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | RE: basic trigonometric functions on the handyboard..
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Wouldn't it be easier to just use the cosine function itself? x = cos y You know x, but you want to find y. Pick a y (maybe 45 deg) and calculate the x. Use successive approximation to determine y within a tolerance. Almost like calculating a (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid 6500 Sonar Problem
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I would also like to know about this. please respond. =) chen (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: HB v1.2, IC v3.1 and ir functionality
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Thanx for the pointer. I got it working with some help from this list. Thanx again, Ed (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | basic trigonometric functions on the handyboard..
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Hi. We've been trying to build an algorithm which will allow our HB to travel between given points. We need to use the inverse cosine function (cos^-1), how can we do that? Is there a math library which contains this and other trig functions? (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Interfacing HB with bus abaco.
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Do anyone of you have already used a strange bus called ABACO ? I'd like to know if someone of you met it anywhere. Thanks Stefano Falconetti (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Fw: Rs422/485 to RS 232 interface
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---...--- (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Rs422/485 to RS 232 interface
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Does anyone can suggest me where to find a simple scheme of an interface from Rs422/485 to RS 232 ? I know that a lot of them are on the web, but where exactly ? Thanks Stefano Falconetti (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Polaroid 6500 Sonar Problem
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Hi, On this page ((URL) says to install a .1uF capacitor at C7 on the sonar board. My team basically did everything you are talking about, plus install the cap, and everything seems to work fine for us... hope this helps, I'm not sure what the (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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