 | | IR Proximity Detector
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In looking over the contributed items on the Handyboard site, I came across the 16 channel IR Proximity detector. Has anyone constructed this or something similar and done any work on attaching it to the Handyboard? If so, can you provide more (...) (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Help on obsolete part.
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Are you sure it is no longer available?? There are more than a few substitutions available to you. For nstance, Kemet manufactures appropriate tantalum capacitor substitutions. There are a few that would meet your needs. Lets look at an appropriate (...) (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | P6305 is obsolete?
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Digi-Key told me that the mini axial 'lytic part #P6305 was obsolete. What part can I use instead? Has anyone had this happen? also, my last message "help on obsolete part" had the wrong part i meant the P6305 from digi-key. -Jon (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | help on obsolete part
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I tried to order the tantalum part #P2011-ND from Digi-Key and they said it has been obsolete. Does anyone know what I can use instead? Has anyone had this problem?? -Jon (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | LISP
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Hi, I was wondering if there is a way to use Lisp with the handy board. If not, how would you call lisp programs from c and visa versa. I appreciate your help, Faris Gammoh gammof@rpi.edu (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Help me, simulator
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There is a cheap simulator for 68HC11 family. I didn´t test it. It cost $25. Its URL: (URL) Gentile Departamento de Electronica. Facultad de Ingenieria. UNR. Rosario Argentina ......... (...) aldo@lacapital.com.ar (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | RE: INTERACTIVE C AND THE .ICB COMPILER
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Russell You are making a mistake in you addressing-mode. You do a: STAB TFLG1,X, where TFLG1 = $1023 and you initialise X=#$1000 The assembler gets confused and generates bogus output, including a warning. You need to set TFLG1 EQU $23. You need to (...) (26 years ago, 16-Mar-99, to lugnet.robotics.handyboard)
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| | Are E9's compatible with HB?
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I have a line on a bunch of MC68HC11E9's and I was wondering if these were compatible with the HB. Any help would be great! STEVE ___...___ Steve Wall Sir Sandford Fleming college Swall@flemingc.on.ca (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | INTERACTIVE C AND THE .ICB COMPILER
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Hello, My problem lies with the downloading of a constructed .icb file created for the .icb compiler from Newton Labs. I have written a .asm file and compiled it using the web page (URL) The code compiles successfully and when I copy the associated (...) (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | Re: 0.1 MF capacitor"104" help
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(...) Normally capacitors with values less than 1uF will not have a polarity. They can go in either way. (...) Doesn't matter. I try to make all the labels face the same way when I build a board. It makes things look better, but it is only for (...) (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | 0.1 MF capacitor"104" help
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How do you tell what is the negative on the cap labelled "104" both sides look the same. please help does the label go in towards the max232 or out towards the edge? ___...___ Steve Wall Sir Sandford Fleming college Swall@flemingc.on.ca (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | wireless connection
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: text/plain; charset="euc-kr" Content-Transfer-Encoding: base64 Content-Length: 496 2. Content-Type: text/html; charset="euc-kr" Content-Transfer-Encoding: base64 Content-Length: 1428 (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | wireless connection
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: text/plain; charset="euc-kr" Content-Transfer-Encoding: base64 Content-Length: 492 2. Content-Type: text/html; charset="euc-kr" Content-Transfer-Encoding: base64 Content-Length: 1412 (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Shaft-Encoders
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Hi, It's very interesting to use mouse QUADRIC encoders for HB as shaft encoders? If anybody make this in hardware? If so, may you give a links? ===...=== -----Original Message----- From: Max Davies <mdavies@CAM.ORG> (...) (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | Help me, simulator
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Hello Apreciate group of handy board Anyone can help me to recomend me some free very good simulator of the 68HC11 microcontroller, I apreciate very much your help, also the internet address where I can obtain it. with my best regards Carlos J. (...) (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Good source for Lego Technic parts?
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Certain items, most notably motors, are *significantly* cheaper than Pitsco if you order them through the LEGO shop-at-home catalog (1-800-453-4652). If you are ordering for an educational instititution and if you ask the shop-at-home people, you (...) (26 years ago, 15-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Shaft-Encoders
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(...) An old broken mouse is an excellent source for stuff like that. Perhaps even buying a new really really cheap one makes sense, just so you can scavenge it's parts. Just open one up to see. (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Good source for Lego Technic parts?
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Hi Steve. one more suggestion for lego parts... Pitsco only advertises a limited number of part kits on their web site. Did you check out their Dacta catalog? In the back there are several pages of specific part kits (i.e. gears, individual motors, (...) (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Shaft-Encoders
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Hi, Does someone have a good and cheap source for optical shaft encoders (or only the encoder disks) ? thanks, Simon (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | (no subject)
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I actually use a NVRAM memory of Dallas company in place of 62256 and extern battery. I Want to replace in the same socket for a little pcb with 16 K rom and 16 K ram. I want to know how to do that? Its´s posible? I will need other IC to decode (...) (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Source for Sharp GP1U581Y ??
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Can someone please point me toward a source for the Sharp GP1U581Y IR detector? TIA, - - - Nick - - - (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Good source for Lego Technic parts?
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(...) <snip> (...) The best, cheapest place to get Lego Technic accessory parts is Lego Shop-At-Home, 1-800-453-4652. Ask 'em to send you a free catalog. In the back of each issue are a couple of pages showing all the miscellaneous motors, pulleys, (...) (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Good source for Lego Technic parts?
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Steve: I bought a kit of parts from Lego to build the first robot mentioned in the mobile robot book by Jones and Flynn. I don't remember the kit number but I purchased the kit from the Lego Dacta division. You might try calling them to get a (...) (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | Good source for Lego Technic parts?
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Somewhat off topic: I'm looking for a good source of basic Lego Technic parts (beams, gears, axles, etc.) for robot construction. I'm not really interested in particular kits with specialized parts like the motorcycle, forklift, and such-- I just (...) (26 years ago, 14-Mar-99, to lugnet.robotics.handyboard)
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| | help me please,ic chip
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hello :) I use handy-board in my work. In one day ic chip to control motor has burn. The ic number is SN75441ONE in handy-board maunal the number U10 ,U11 L293D . I look number like this in ECG book it no have the number like this. If you know (...) (26 years ago, 13-Mar-99, to lugnet.robotics.handyboard)
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| | Re: How big is our community?
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it's about 500 people. fred In your message you said: (...) (26 years ago, 13-Mar-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi, have any of you guys tried wall following with 4 ir proximity detectors? I'm having trouble getting mine to work properly. I think the problem is with my program. I'll attach it in my next letter, hope someone could help. Thanks. F. Samonte (26 years ago, 12-Mar-99, to lugnet.robotics.handyboard)
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| | Sensors
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hi i'm trying to find a cheap and reliable infra-red digital sensor with a sensing range of around 0-30cm. does anyone have any recommendations? are there any online stores that sell a wide variety of such sensors? btw, the sharp GP2D05/02 sensors (...) (26 years ago, 12-Mar-99, to lugnet.robotics.handyboard)
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| | Servo Expansion Board
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Hi all, I have the Handy Board running fairly well, although I havn't tested ports, etc. Question. I have the expansion board, and when I try to run the init_servo (not exact) command, the board locks up. Anyone see this problem before? Thank you, (...) (26 years ago, 12-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Sensors
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Hi We just built a IR detection with a Radio Shack IR LED and their Sharp detector GD1U..whatever....cost a few dollars. Basically detects anything within about 60 cm, depending on what surface you are reflecting off of. We found that we had to (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | RE: DC motor with encoders
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Thanks for the tip. Lotsa cool goodies. shan o (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: DC motor with encoders
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Hi ever heard of Maxon Motors (the one that supplied the Pathfinder on Mars with motors). They have hi quality low voltage motors. We are using them here. They have opticel encoders (HP) directly mounted. Price arouonf $120 for a 15W motor incl. (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rs422/485 to RS 232 interface
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Thanks a lot, I had only one rs232 and I used to interface a display. I'll ceck the link to search it. Stefano ---...--- (...) interface (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | How big is our community?
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Hi Fred, Maybe this is a little off topic, but it's still interesting, I guess: How many people are on your HB mailing list? How big is our community? Alf (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Creating multiple serial outputs with the HB expansion board
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I have considered something like that and it sure would work but I was hoping to find a s/w based solution that didn't require changing the h/w. I only need outputs, 2400bps, and I dont need any of the more functional aspects of typical serial parts (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: DC motor with encoders
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You can get all type of motors from Surplus Center their number is 800-488-3407. -----Original Message----- From: CHOI DAMEE <choi5@cooper.edu> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Wednesday, March 10, 1999 9:34 PM Subject: (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Creating multiple serial outputs with the HB expansion board
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Have you considered (not sure about the full requirements) but designing a secondary expansion board with serial controllers instead of the expansion headers?? Just an idea, but the Motorola version of the serial processor (6850?) should be a good (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Rs422/485 to RS 232 interface
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(...) We buy them from B&B. However, my link isn't up right now and I can't check the URL. Try www.bandb.com. I know that www.obdii.com links to their site. -d I use Unix because reboots are for hardware upgrades... You use Windows because some (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | Creating multiple serial outputs with the HB expansion board
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I would like to create multiple serial outputs (like 3 or 4) using the digital outputs on the handyboard expansion board. The purpose is to drive an external servo controller and external motor controllers (motorminds) which can handle more load (...) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | DC motor with encoders
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Does anyone know where we can find DC motors with optical encoders? possible low voltage ones (around 12 volts...) Thank you for any information :) (26 years ago, 11-Mar-99, to lugnet.robotics.handyboard)
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| | 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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| | Re: basic trigonometric functions on the handyboard..
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A lookup table will be much faster if you can afford the memory space. -----Original Message----- From: Guy & Gad Berg <gberg@netvision.net.il> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Tuesday, March 09, 1999 3:21 AM Subject: (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Polaroid 6500 Sonar Problem
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I'm having difficulty getting my sonar rangefinder to work properly. I've got a fully operational Handy Board with a fully operational Expansion Board plugged into it (both purchased assembled from Gleason and used extensively already without (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D05?
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hello anyone tried interfacing the Sharp GP2D05 sensors to the handyboard before? i'm thinking of buying some as i need a reliable and cheap digital(Yes/No) sensor. from what i can understand, there are 4 wires, Vin, Vcc, Gnd and Vout. the Vcc, Gnd (...) (26 years ago, 9-Mar-99, to lugnet.robotics.handyboard)
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| | Re: nonvolatile memory
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(...) Try Dallas Semiconductor. Curt Mills, WE7U hacker.NO_*SPAM@tc.fluke.com Senior Methods Engineer/SysAdmin "Lotto: A tax on people who are bad at math." -- unknown "Windows: Microsoft's tax on computer illiterates." -- WE7U (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: nonvolatile memory
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(...) Actually the DS1225Y is a 8Kx8 NVRAM chip. The correct Dallas part for the HB is a DS1230. Another option is the Simtek EEPROM backed (no battery) chips. They have the same package as a standard RAM chip, whereas the higher profile Dallas (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: nonvolatile memory
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You need to either 1. build a battery circuit that connects to the power pins of the memory chip or 2. Buy nonvolatile memory -phil (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: nonvolatile memory
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(...) You can get a RAM Module with built-in battery. Don't remember the name but they are out there. (...) ---...--- Shoot-to-Win Protect the 2nd Amendment ---...--- (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: nonvolatile memory
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Just a thought, you could try one of Dallas Semiconductor's nonvolatile SRAM such as the DS1225Y Cheers, Ranjit (...) -- Ranjit Diol - COMPSys Dowagiac,Michigan e-mail: rsdiol@mich.com website: (URL) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | nonvolatile memory
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Does Anyone know how to modify the handy board so that when the battery is disconnected the memory on the board is not lost? In short I want the HB to have nonvolatile memory so that I do not have to reload the pcode in bootstrap mode every time the (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | HB & unmanned vehicle system
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Hi, can anyone help me in devolping an unmanned ground vehicle system using a Hand Board? This is my first experience with the HB, in fact, I'm actually buying it (sorry, but may be you can also tell me where to by one by the internet and what to (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | 20 X 8 L.C.D driver?
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I have seen questions on the list about using a 20 X 8 instead of a 16 X 4 lcd, I think that the person was told to look on the handy board site for a 20 X 8 driver. has anybody used a 20 X8 lcd and if so how did you do it and could you help me use (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Serial Routines
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Hi, I have the following questions: I want to transmit data by a radio comunication beetween HB and PC (only HB to PC right know) using the pa7 and a one-way wireless link from Conrad Electronics (german electronic reseller). Do i need the pa7_9600 (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Sharp GP2D05?
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I have used the Sharp GP2D05 with the Handy Board and found it to be extremely simple to use. It is easy to control in either IC or in assembly language and easy to adjust for range. There is a tiny potentiometer on the back of the unit that you (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Java and 68hc11
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Thanks, I downloaded all, and now i'm trying to make it run. Very, very interesting... ---...--- From: Pierre Deprost <Pierre.Deprost@Advalvas.be> To: Stefano Falconetti <falconetti@sigma.it> Subject: Re: Java and 68hc11 Date: 03 March 1999 22:20 (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Sharp GP2D02 code available
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Terry, Understand that the GP2D05 is a different device than the GP2D02. For the '05' you can set a analog threshold and the digital output read 1 or 0 depending whether the distance is according to this set threshold. The '02' device has a real (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Are GP2D02 available in Australia
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Hi all, Can anybody tell me from where I can get GP2D02 in Australia. Sincerely Javaid Iqbal (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D02 code available
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I just finished sending a question to the mail list but may have my problem fixed? Just from blind luck. I have digital out #7no the expansion board and digital in#15 on the main board and the first of the zeros on on the LCD changes to a one at (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D02 code available
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Hi Barry, I have a GP2D05 from Acroname Inc., Have wired as per instructions black for gnd., green for Vin, Yellow for Vout, and red for Vcc.The pin outs are different than the GP2D02. Then installed the diode and connectors for the handyboard .as (...) (26 years ago, 8-Mar-99, to lugnet.robotics.handyboard)
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| | stepper motors
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Hi : I am looking for a stepper motor that works at 7V. I was wondering if any of you have used stepper motors for the handyboard or the Rug Warrior. If so, what model did you use and what was your selection criterion for the motors. Thanks. (26 years ago, 7-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Where do I get Sharp GD sensors
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I ordered mine from Acroname Inc. for $19.00. They also have sample code provided by Gary Livick. I haven't connected it to the handyboard as or this time but will be intersted to know how everyone else is doing it. Mine is a model GP2D02. Good Luck (...) (26 years ago, 6-Mar-99, to lugnet.robotics.handyboard)
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