 | | Sockets for 18200
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Does anyone know if there exists a socket for the National 18200. My application warrants the need to be able to replace the chips if they should ever fail. thanks for any information Patrick (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Port E inputs
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the 6.270 has a diff anlg ckt. remember, the app b is generally applicable, but some details are different. -f In your message you said: (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | dual servos
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Hello everyone, I have been fiddling with my dual servo routines and I have gotten things running to the point that I now need a chassis for my project. While working on the drive system I have noticed that when under heavy motor load (2 motors at (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Port E inputs
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Hello, I noticed that in Figure B.9 on page 194 in Appendix B of the 6.270 manual that pins PE0-PE3 are shown to go to seperate little port symbols while pins PE4-PE7 go to a block labeled 'Analog Input Header'. Do these inputs really go to two (...) (28 years ago, 13-Feb-97, to lugnet.robotics.handyboard)
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| | (Kein Bezug)
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help (28 years ago, 13-Feb-97, to lugnet.robotics.handyboard)
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| | LM324
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The latest expansion board schematic shows an LM324 for the high impedance input buffers. Although the LM324 is cheap and available, its input and output voltage ranges are limited to 0 to 3.5V (yes, probably a little more with any real part). If (...) (28 years ago, 13-Feb-97, to lugnet.robotics.handyboard)
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| | UNSUBSCRIBE from handyboard@media.mit.edu
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Hello, who can tell me how I UNSUBSCRIBE me from this Mailing List... Thanks Bye, Matthias Pletz (28 years ago, 13-Feb-97, to lugnet.robotics.handyboard)
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| | Re[2]: as11_ic
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Hello, Am I the only one who is still lost with this stuff? Help! I see the Mac ports of the as11 assembler on the web site; why can't the DOS version be put there? I have been unable to find the assembler on Motorola's web site despite several (...) (28 years ago, 13-Feb-97, to lugnet.robotics.handyboard)
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| | is there a program
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I am building a handyboard from the board up and i was wondering if a program exists that when the handyboard is programmed i can get it to run through a maze on my monitor, i can't afford a body right now thanks ted houle (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | Re: as11_ic
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There are two fundamentally different ways to go about writing assembly language programs for the Handy Board: 1. Write them as callable functions for the Interactive C environment, using the as11_ic program. 2. Scrap Interactive C entirely, and (...) (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | as11_ic
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Hi, I was wondering if there is a version of the as11_ic assembler available for the IBM PC. If not, is there any other way to use an .asm file on the handy board? Thanks. -LUKE (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | Building new PCODE
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As I cant seem to get a 16x2 LCD, I have installed a 16x1 display. The problem now is building a suitable version of the PCODE to support it without workarounds. I don't have a unix box so I got Kent's (?) port to the PC. That, however, is an older (...) (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Signal Diode
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JTW, Use 1n4002, 1n4004, etc - they are higher rated parts and usually the same price (which is why 1n4001 has been discontinued - everybody upgraded for free!). Richard ___...___ Reply Separator ___...___ Subject: Signal Diode Author: (...) (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | as11_ic
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Hi, I was wondering if there is a version of the as11_ic assembler available for the IBM PC. If not, is there any other way to use an .asm file on the handy board? Thanks. -LUKE (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | sonar&motor driver
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Hello everyone, If the polaroid sonar sensors are connected as mentioned by kent (ftp site), is it still possible to use motor ports 2 & 3? (28 years ago, 12-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Signal Diode
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The 1N4001 is the 50v version of a family of diodes (1N4001-1N4007) that cover 50 volts to 1000 volts. In general you could use any of the other versions. I would recommend looking for 1N4002(100v) or 1N4003(200v). As it happens Digikey says they (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Signal Diode
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the 1n4001 is a pwr diode, not a signal, try looking in pwr section. -f In your message you said: (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Sonar Query
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Anyone, I've been reading the documentation pertaining to the hookup of the Polaroid 6500 sonar and am a little bit unsure about some of the wording. Can you please verify with me a few things.... When you discuss the connections to the HB, it is (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Kent, I've been reading the documentation pertaining to the hookup of the Polaroid 6500 sonar and am a little bit unsure about some of the wording. Can you please verify with me a few things.... When you discuss the connections to the HB, it is (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Re: HB does not enter on bootstrap mode
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there is no special "mode unlock," so you may have a bad 6811. -fred In your message you said: (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | HB does not enter on bootstrap mode
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Hola, I followed step 4.4 in the HB assembly manual. I hold down STOP-SW while powering on the board, then the battery LED light for 1/3 s, but the power light does not go OFF. I have checked that the MODA signal and the RESET are present at the (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Signal Diode
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Hey all, Mouser (and Digi-Key, etc.) say that the signal diode 1N4001 has been discountinued, I can't seem to locate any one who has them. This small partis holding up the project. Anybody have extras? Ideas? JTW (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | IS1U60 IR Demods
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Hello! Can anyone tell me what a fair price would be for this part (IS1U60) would be? I am not trying to make money on anyone I just want to try to share some of these hard to get parts. By the way, sorry I haven't got back to those who responded I (...) (28 years ago, 11-Feb-97, to lugnet.robotics.handyboard)
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| | Re: empty addresses
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(...) Why do you want to store it at a particular address? Can't you store it into a variable name and let IC take care of where it goes? I think the 16K memory when allocated builds from $0000 and $7FFF towards the middle, so I'd guess any unused (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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I vote for the 100mA 5V switch. Digital Outs seem to be quite the disired feature here amoung many. This 100mA capability also provides more options for people to use these signals. It's better than just the CMOS signal, since it can double as that (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: memory
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I believe reliable operation of the VR used in the HB is about 7 V. Is this correct, Fred? (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | empty addresses
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where's some good addresses to store three bytes of info? everywhere i put it seems to crash the system.... thanks, -md (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | RE: I agree-
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(...) I agree. I could use a few more outputs, and a serial port or two. Having a synchronous serial port would be too good to be true, but I can do most of what I need with just one more async port over what the Handyboard currently has. Haven't (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | RE: I agree-
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(...) I both agree and disagree with this sentiment. One of the reasons I would like to have six servo outputs, is that I've got a Lynxmotion arm that I want to control. The arm comes with a Scott Edwards serial servo controller. The problem is that (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | unsubscribe
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Please unsubscribe me. hachemi (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: large # of digital I/O's
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This chip is REALLY handy.. I worked some time with it, and liked it.... Bastiaan ---...--- (...) $4 (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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Hi Fred The "new" spec sound's great ! I'd also like to see a bit more digital I/O on any expansion board, and the extra 8 CMOS outputs are just what I (we) need. Thanks Scott (...) Martin'" <fredm@media.mit.edu> (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Re: L293D Piggybacking
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Yes, most people have found that this works. -Fred -- This message was composed using Articulate Systems' PowerSecretary, a Macintosh-based speech-to-text dictation system. Please forgive any sloppiness in the formatting. Thanks. -Fred In your (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | L293D Piggybacking
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My question is, can I piggyback the L293D's and what will this increase my max current output to? I am going to just one motor from port 0 and the other from port 3 so as possibly eleminate smoking any more 293's. What do you think? Bill Rose Fort (...) (28 years ago, 10-Feb-97, to lugnet.robotics.handyboard)
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| | Not enough Servo ports on Expansion board
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Hello, Iwould suggest increasing the available servo ports on this. Servos are widely available, getting cheaper, and compact for robotics. This could have been facilitated on the original Handy board, but nevermind. I'm already using my method on (...) (28 years ago, 9-Feb-97, to lugnet.robotics.handyboard)
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| | HB does not enter on bootstrap mode
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I followed step 4.4 in the HB assembly manual. I hold down STOP-SW while powering on the board, then the battery LED light for 1/3 s, but the power light does not go OFF. I have checked that the MODA signal and the RESET are present at the 68HC11, (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: AS11 IC?
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You can get the PC version of everything you need to compile .ASM source code into IC compatible .ICB files at (URL) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: FW: expansion board schematic posted
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Sean, Using two of the SPI port pins, and a MUX and DEMUX, you should be able to gang together four of the Polaroid ultrasonic sensors. See if the code below makes sense. I wrote it a while ago, when I wanted more Polaroids, but - I didn't actually (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board/multiple sonar
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It's actually a '374 or '373 for outputs. I guess you could use them for inputs too, but you're better off using a '244 for input. Or even a '574, '573, '541, these chips put inputs on one side and outputs on the other. Very convenient. Even (...) (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board schematic posted
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(...) I would love to see more digital outputs put on the expansion board. Just out of curiosity, is the Poloroid sonar connection still going to be on the board. That is what I am waiting for most of all. Keith (28 years ago, 8-Feb-97, to lugnet.robotics.handyboard)
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