 | | Re: Video Transmitters
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NetMarket (www.netmarket.com) carries a transmit/receive pair made by Recoton. It's intended to transmit audio/video around the house. Ours includes a gizmo to extend your remote control capabilities, and it cost about $120. Just the (...) (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | Re: mixing variable types in IC
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[Ben Davis] spake unto the ether: (...) Hmm, I think you want c = ((float)(x))/((float)(y)); Otherwise, the division will be done first as integers, giving an integer quotient, which you're then turning into a float. *Rich* (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | mixing variable types in IC
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Hi John- You can convert quantities from one data type to another (it's called "casting", I believe). The following computes the quantity x/y, then converts it to a float: ---...--- int x, y; float c; float divide ( int x, int y) { c = (float) (...) (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | mixing variable types in IC
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Now that I got past my nested function problem I have discovered that IC does not like mixing variable types. For instance, this results in an error: int x, y; float c; float divide ( int x, int y) { c = (x/y); return c; } IC will not let me (...) (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Video Transmitters
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[glashan] spake unto the ether: (...) JDR Microdevices ((URL) sells a $25 short-range VHF TV transmitter kit. It's all analog, so there is some drift with warmup and it needs a very stable power supply, but otherwise it works great. The observer (...) (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | Video Transmitters
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Hi all I wonder if anyone out there can help me with this: Im looking for a cheap video transmitter or circuit diagram. Ive got a small board camera on my bot and I need to find some way of sending the video to my TV. I dont want to go out and spend (...) (25 years ago, 14-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition - understand now, Thanks
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Sorry, Forgot to enclose the code. what is wrong here? long time; void phony() { while (digital(2) == 1) { time = mseconds(); printf("%d\n", mseconds()); } if (mseconds () >1413 ) fd(1); else bk(1); } void start() { phony(); } void main() { while(1) (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition - understand now, Thanks
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John, Have been following your problems with function definition. what is wrong with this code? It will print the mseconds but the if statement does not work. Thanks Terry -----Original Message----- From: John Bachman <bachman@anatek.mv.com> To: (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition - understand now, Thanks
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Rich got it. Nested functions was the problem. I don't recall seeing that discussed in the IC manual and I think it is OK in C. Nonetheless, thanks to all for helping this hapless programmer. John (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition
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(...) whoa! Local function definitions. Even GCC doesn't grok that. Try extracting the function definition phony() from start() like so: long time; void phony() { while (digital(2) == 1) { time = mseconds(); } } void start() { phony(); } -d (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition
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[John Bachman] spake unto the ether: (...) You have the definition of phony() nested inside the definition of start(). I don't know what ANSI C and/or C++ let you do, but this is invalid IC. You need something like: long time; void start() { (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition
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Thanks for all the helpful device but the darned thing still does not work. I have created a simplified program to try to figure out what I am doing wrong. Here it is: /* A simplified program to figure out what is wrong */ long time; void start() { (...) (25 years ago, 13-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition
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John: If your function does not need a parameter passed to it just do: void detect_time2() { /* code here */ } just like int main() { /* code here */ } Bart. ___...___ Reply Separator ___...___ Subject: IC trouble - function definition Author: (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | Re: IC trouble - function definition
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John: Try it like this----- void detect_time_2() {same code here;} IC is a lot like ANSI C, but there are some differences. Good luck, Gary Livick (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | IC trouble - function definition
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I am having trouble with function definitions. Can someone tell me what is wrong with this: void detect_time_2 (void) { code here;} I get a syntax error on the definition line and cannot figure out why. TIA John (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | RE: pneumatics and compressed air cartridges
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check (URL) Look under spare parts for Pneumatic products Kalyan -----Original Message----- From: Chen Yung Hsu [mailto:hsu3@cooper.edu] Sent: Thursday, November 11, 1999 4:23 PM To: handyboard@media.mit.edu Subject: Re: pneumatics and compressed (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | Re: pneumatics and compressed air cartridges
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You may find some help by joining the legged robot email list. There have been several discussions on this topic. Send an email to: legged-robots-subscr...groups.com and it will send you information and instructions to join. Then simply send your (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | Re: pneumatics and compressed air cartridges
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Chen, I just received catalogs from Clippard Minimatic Co. Looks like just what you are looking for. http//www.clippard.com bye Terry -----Original Message----- From: Chen Yung Hsu <hsu3@cooper.edu> To: handyboard@media.mit.edu (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | Robot for sale
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I have a General Robotics RB5X I'd like to sale for $1000, it was just refurbished by General Robotics a year ago at a costs of $1200. I know this doesn't have anything to do with Hand Boards but I thought maybe someone from the mailing list would (...) (25 years ago, 12-Nov-99, to lugnet.robotics.handyboard)
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| | Re: pneumatics and compressed air cartridges
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Hi! I was wondering if anyone can help me. I'm looking for light weight, miniature pneumatic actuators, solenoid valves, and compressed air cartridges. Does anyone know any companies that sell these? Also, does anyone have any experience utilizing (...) (25 years ago, 11-Nov-99, to lugnet.robotics.handyboard)
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| | Sbasic
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Anyone used sbasic with the handyboard?? Just curious as to what it can/can't do. thanks Adam (25 years ago, 11-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Natural Born Robots
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(...) Too bad it only shows in some cities, though. :-( Listings for Natural Born Robots Episode Number 1002 between 9 Nov 1999 and 23 Nov 1999 Date Location Station ---...--- ---...--- ------- Tue 9 Nov 11:00am PT SAN FRANCISCO-OAKLAND-SAN JOSE CA (...) (25 years ago, 10-Nov-99, to lugnet.robotics, lugnet.robotics.handyboard)
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| | Re: Linx Technologies RF module
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I'm also interested in using a set of these RF modules to transmit serial data from my handyboard to a host PC, from looking at the web site It seems that the best option would be the HP series, as they except direct serial data. Does anyone know if (...) (25 years ago, 9-Nov-99, to lugnet.robotics.handyboard)
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| | Natural Born Robots
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In case you missed the neat robotunas last week, the Scientific American episode 1002 will be shown tomorrow on KCWC at 3pm (MT) and on KVCR at 8am (PT). You can check out all other times and locations at: (URL) (25 years ago, 9-Nov-99, to lugnet.robotics, lugnet.robotics.handyboard)
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| | Re: LCD screen
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Hi! Timeline Inc. sells 2x16 parallel LCD for $7.00/each! (URL) is great. Good luck! (...) Great minds discuss ideas; Average minds discuss events; Small minds discuss people. --unknown ===...=== Kam Leang University of Utah Department of Mechanical (...) (25 years ago, 9-Nov-99, to lugnet.robotics.handyboard)
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| | LCD screen
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Hi, the LCD on my handyboard is busted... can anybody tell me where can i get a replacement, or way to fix it.. thx (25 years ago, 8-Nov-99, to lugnet.robotics.handyboard)
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| | Uploading to a PC
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Hey there - I'm trying to upload information from the Handy Board to my Linux machine. I've reviewed the Handy Board FAQ and the Linux How-To, but I'm still having some troubles.... I'm using the code at (URL) transmit data from the board, but I (...) (25 years ago, 7-Nov-99, to lugnet.robotics.handyboard)
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| | IC 3.2 download problem
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Hi! I just upgraded the IC 2.81 to 3.2 version and now I can't anymore download the needed C libs. The pcode (version 3.1) will download nicely but when the IC will try to download the lib files it will stop everytime in the same position. The (...) (25 years ago, 7-Nov-99, to lugnet.robotics.handyboard)
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| | To all mac programming gurus
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Hiya To all you mac gurus , recently obtained a rf tx + rx , have succesfully interfaced 2 HB remotley , and was wondering if a desktop top could TX data to a HB with the RX atached to the RX lines of the RS 2-32 port. Meaning : I know how to do it (...) (25 years ago, 6-Nov-99, to lugnet.robotics.handyboard)
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| | Linx Technologies RF module
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Hi, Has anyone used the Linx Technologies RF modules for RF communication? (URL) so, please provide details or your home page link. Thanks Kalyan Kalyan Mulampaka Software Engineer e Information Services ___...___ Ph#: (770) 698 4436 (O) (678) 320 (...) (25 years ago, 5-Nov-99, to lugnet.robotics.handyboard)
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| | Wireless RS-232?
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Just a few qeustions , would it be possible to use the system at www.mech.utah.edu/~k...alcom.html for a wirless rs-232 link. Core3ect me if im wrong but wouldnt all you have to do is add another tx , rx pair and poof you have a wirless tanciever (...) (25 years ago, 5-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Character Arrays
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You're initializing foo[] wrong, it should be: char foo[] = { '1', '2', '3', '4' ); (...) the (...) (25 years ago, 5-Nov-99, to lugnet.robotics.handyboard)
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| | Character Arrays
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Hi... I'm wondering if there's a way to extract an element from a character array the same way it would be done for an integer array. For example, when I have: char foo[]= {1, 2, 3, 4}; char bar(int i) { return foo[i]; } ... a zero is returned for (...) (25 years ago, 5-Nov-99, to lugnet.robotics.handyboard)
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| | GNU C-Compiler for HC11
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A new GCC/HC11 port is available. I had nothing to do with this one, but it looks much better than the GCC-2.8.1 port that I'm maintaining. It uses the full GNU toolchain. (URL) is reported to work with the Handyboard, the BotBoard2, and the (...) (25 years ago, 4-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Microphone
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Hey, what a coincidence... I was just having a look on the web and found this page... (URL) a simple circuit hooked up to the handyboard analog port. hope this helps Adam PS has some other cool stuff too, like an rf link etc :-) ----- Original (...) (25 years ago, 4-Nov-99, to lugnet.robotics.handyboard)
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| | Re: building a remote debugger for win32 -- need help
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(...) I've check with teh other guys in the team and a few of them know Delphi rather well. Do you think you could give me the source of hbdl? Regards, Hans (25 years ago, 4-Nov-99, to lugnet.robotics.handyboard)
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| | Re: building a remote debugger for win32 -- need help
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(...) Yes I do have Vadim Gerasimov's code, Vadium was kind enough to send it to me. I had thus used it as a basis for my HB_Buffalo monitor download system. Yes, Vadim Gerasimov code, and mine, is written in Borland Delphi (Object Pascal), not in (...) (25 years ago, 4-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Using the Lego Rotation Sensor with the Handyboard
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the lego 9v active sensors (i.e., rotation and light) require a pulsed 9v drive & appropriate drivers. the circuit and drivers are part of the HB Expansion Board. you could potentially adapt both to work w/o the exp bd. it's a 2 transistor ckt with (...) (25 years ago, 3-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Using Vector 2X and Polaroid sonar w/ exp board
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Hi Rob, I also would lile to see a hook-up for both sensors. Has any one sucessfully completed the task? Thanks Terry -----Original Message----- From: TH0RMAN23@aol.com <TH0RMAN23@aol.com> To: handyboard@media.mit.edu <handyboard@media.mit.edu> (...) (25 years ago, 3-Nov-99, to lugnet.robotics.handyboard)
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| | Re: Scientific American Robot Special on PBS
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I caught the show last night also. It's really worth watching. You can check at www.pbs.org for a brief summary and check the next showtime in your area. -Kathy (...) (25 years ago, 3-Nov-99, to lugnet.robotics.handyboard)
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