 | | Any one have experence in robotic vision?
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This really isnt a HB question but >>>> Have been reading a few vision books , thay all have formaulas and examples etc but none of them help you with actual code , my actual question is does any one have some example vision code in C or anything? (25 years ago, 2-Aug-99, to lugnet.robotics.handyboard)
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| | Noise on the handy board
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Fred and handyboard experts, I have assembled two handyboards and I am now helping 15 other people build theirs at San Jose State University. I found a problem on the first two I build that I belive causes the Sharp GP2D02 not to work. The school (...) (25 years ago, 31-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Millisecond timing
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(...) See the Polaroid sonar code (from the HB web site) for an example of how to measure timing signals on the TIC3 channel. You initialize with: bit_set( 0x1009, 0x30 ); /* ddrd */ bit_set( 0x1021, 1 ); /* at tctl2, */ bit_clear( 0x1021, 2 ); /* (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Millisecond timing
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The clock speed on the Handy Board runs at 2 Mhz, which is plenty fast enough for most things IF you run the right code. IC, used in its C implementation is too slow to catch anything at 1 ms reliably. However, there are a few simple work arounds. (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Millisecond timing
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I recently bought a Handy Board to use in acquiring time measurements varying by one millisecond. The Handy Board has a clock speed of 2kHz, therefore it should be able to measure down to one half millisecond. What I have found however is that the (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Can't bootstrap! & IR reflective sensors help
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After assembling my own handyboard (ugh), and everything was (supposedly) solded OK, i tried to put the handyboard in bootstrap mode. But i get no results... i tested the stop button and it works fine (i compared with the OTHER handyboard i had)... (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Reading Serial Port
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David Boosalis <dboosalis@mail.arc.nasa.gov> moved upon the face of the 'Net and spake thusly: (...) "Use The Source, Luke". Check the source code of the downloader in the Unix port of Interactive C. (...) I think you want 9600, not 921kbaud (unless (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Dead handyboard?
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(...) Antistatic bags are conductive, right? You might have shorted the power to the ground via the bag itself, thereby killing your battery. Once a NiCad cell shorts, then it will can a large amount of current from a charger, possibly killing off a (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Dead handyboard?
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My hb was working fine, I took it on a trip in an antistatic bag. When I took it out of the bag, the battery was completely drained. But as soon as I started to charge it, one of the resistors burned up. So I tried charging it via the interface (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D12
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Hi all, I want to use the GP2D12 distance measuring sensor with my handyboard. Does anybody know the pinout details for the three pins? Thanks, Thomas (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D12
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(25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: R: Reading Serial Port
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also remember that at 9600 baud or higher, you may not see the flashing of the serial LEDs. try setting the baud rate to 300 or even 110 if you're doing visual-flash debugging. fred In your message you said: (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Reading Serial Port
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It isn't hanging, it's a blocking read until it recieves some specified number of characters. You can use a non blocking read by specifying O_NONBLOCK, in which case read() will return immediately. The Linux serial programming HOWTO is very good, I (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | R: Reading Serial Port
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You can try Java comm API, under linux too. (If you want to use java ... :-) Stefano ---...--- | Da: David Boosalis <dboosalis@mail.arc.nasa.gov> | A: handyboard mailist <handyboard@media.mit.edu> | Oggetto: Reading Serial Port | Data: 29 July 1999 (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Reading Serial Port
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This is not really a HB question, but I am hoping someone here has experience in it anyway. My question is in how do you read the Serial port under Linux. The Linux HOWTO's give an example, which I show below. What happens is that it hangs on the (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Serial line output
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Just started to learn how to use my new HB. In going through the IC manual I could not find any routines for writing to the serial port. Does anybody have a good example on how to write "hello world" to the serial port, and have the attached (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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Hi all, Seeing notes about the sub and all, I thought I shall share some info. I know this list is purely for HB enthusiasts and forgive me if this does not interest you. The reason I got involved in HB was when I planned to use HB for a Aerial (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Linking HB with UART
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Recently , i am trying to use HB as the controller for a Remote control project . However , i have yet to figure out how to make the HB take in a 8 bit digital signal from the UART?Is there any circuit require to execute the describe function? i am (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | RE: submersible, ballast, depth sensor
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There is a whole community of Radio Control submariners who have extensive experience that you could make use of. If you want it to act like a true submarine with diving planes etc. you should definitely use their knowledge base. It is much harder (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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(...) Yes. You missed the "with a hole at the bottom connected to the water" which means that water comes in as you move the air to the reservoir. And this means reducing the effective volume of the submersible but keeping its weight. Just the same (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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(...) reservoir (...) time (...) I'm curious; what is the difference between the "buoyancy tank" and the "resevoir"? I'd think moving air from one tank to another won't actually affect buoyancy. Am I missing something? (...) cylinder (...) That's (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Linking HB with UART
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That is what Radio Control modelers do all the time. The technology is mature and readily available. This would prevent any autonomy in the bot, you become the brains. Mike (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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Hi! I planned to build a sub myself about two years ago but couldn't find the time to build it. What I have to offer are some thoughts. Fortunately a submersible needs lots of ballast, so you can stuff it with lots of batteries and gear. So my plan (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi - We are building a submersible robot. For maintaning the depth we need a ballast system, we are planning to use a canister of compressed air with some electronnically controlled valves. In addition we are planning to use a depth sensor, Pressure (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Pulse timing
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Hi all, After reading this Tilt Sensor message I had a look at www.analog.com and found they did samples of the chip. I got two samples the other day and so made a quick test pcb. The board seems to work ok looking at it with a scope but now I want (...) (25 years ago, 27-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Interfacing handyboard with Basic Stamp2
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Hi, You can use the SPI interface and have the BS2 as a master. The BS2 then defines the clockspeed, because the slowest speed you can select on the 6811 is probably to high for the BS2. It is very simple to use this interface. See the "pink book" (...) (25 years ago, 27-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Voice Recognition Hardware
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I actually bought one of these units (used) but have been unable to find out anything at all about them beyond the canned software. Any hints as to any sources? Ken McKinnon klmckin@magmacom.com (...) (25 years ago, 27-Jul-99, to lugnet.robotics.handyboard)
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| | Re: HB Serial line speed change
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(...) I haven't looked at the schematics for the handyboard for a while, but if you use an E-series processor, then I think you can go up to 12MHz (3 MHz E-Clock). I'm not sure whether the rest of the Handyboard could take the increased speed, and (...) (25 years ago, 26-Jul-99, to lugnet.robotics.handyboard)
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| | Interfacing handyboard with Basic Stamp2
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Hello to everybody. I would like to ask if is possible to interface the handyboard with the basic stamp2 using not the RS232. Thanks beforehand. (25 years ago, 26-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Weak Motor
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(...) It wouldnt be wise to directly connect your 12V supply to the Handy Board... even if it doesnt cause damage to your Handy Board, I dont think your motor will be able to draw sufficient current from the motor port to run properly. Rather, you (...) (25 years ago, 26-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Voice Recognition Hardware
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Try to track down a company called "CoVox". These guys used to have a speech recognition device that ran on the Apple II (6502) that was pretty cool (speaker dependent of course). Also there is a speech recognition chip for use in toys the HM002 or (...) (25 years ago, 26-Jul-99, to lugnet.robotics.handyboard)
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| | Voice Recognition Hardware
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Greetings All! I was wondering if anybody out there knows of any good, relatively inexpensive, (<$350) Voice recognition hardware that is relatively easily interfaced to the handy board? Thank you very much. -Ryan Meuth (25 years ago, 26-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Weak Motor
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(...) I remember someone saying a few months ago that if you use a 12 V battery with the HB, then the HB's built-in charging circuit won't work properly, and that 12 V batteries can initially deliver up to about 14 V, which wouldn't be very kind to (...) (25 years ago, 25-Jul-99, to lugnet.robotics.handyboard)
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| | Re: something is wrong with my handyboard
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I had a similar problem. In my case, the cause was underneath the board. I had not trimmed one of the components leads enough. When I screwing the board into the case the lead eventually pierced one of the wires going to my Nicad pac. My board would (...) (25 years ago, 25-Jul-99, to lugnet.robotics.handyboard)
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| | Re: HB Serial line speed change
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(...) Note that this will also require that you disable interrupts, and that will mess up your motors. However, it should be possible. --Chuck (25 years ago, 25-Jul-99, to lugnet.robotics.handyboard)
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| | Re: HB Serial line speed change
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(...) You can communicate at higher baud rates (19200 or 38400) on an 8MHz 68HC11 if you disable SCI and use software "bit-bashing" routines. I have enclosed examples of such routines in sw_baud.s11 file. Setting the BIT_TIME to 52 or 104 allows you (...) (25 years ago, 25-Jul-99, to lugnet.robotics.handyboard)
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| | Re: HB Serial line speed change
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(...) The definitive answer comes from the "pink" book, which everyone should have (especially now that you can get it on CD-rom for free by filling out the form on the Mot web site!) Which basically says "No you can't do that." But it says it in a (...) (25 years ago, 24-Jul-99, to lugnet.robotics.handyboard)
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| | Re: something is wrong with my handyboard
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Chau, sounds like either (a) your LCD screen went bad, or (b) there is a bad connection betw the LCD screen and the rest of the HB. fred In your message you said: (...) (25 years ago, 24-Jul-99, to lugnet.robotics.handyboard)
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| | Weak Motor
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I have try to run the handy board using the standard DC 9V motor purchase from one of the vendors. However , it does not seem be able to move very well though i put it to 100% of its capacity. I am now working on a project to built a remote car (...) (25 years ago, 24-Jul-99, to lugnet.robotics.handyboard)
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| | Re: HB Serial line speed change
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Here is the relevant function. Note that it only works for baud rates up to 9600. void set_baud(int rate) /* For an 8 MHz clock */ { if (rate >= 300) poke(BAUD, 0xb0 | log2(9600/rate)); } You'll need regdefines.c (for the address of BAUD) as well as (...) (25 years ago, 24-Jul-99, to lugnet.robotics.handyboard)
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