 | | BCD
|
|
Does anyone know the details of how a BCD number is stored? I'm unsure as to what a "half-carry" is in HC11 CCR. It would be great if someone can provide a little example. :) ---...--- ericson mar Master of Engineering Candidate Project: Mobile (...) (28 years ago, 2-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Shaft Encoders
|
|
One of the advantages of using a shaft encoder is: For you to get the same "resolution" as a shaft encoder with a potentiometer, you must have a very precise pot. Some optical encoders can have 500 "ticks". But... a normal encoder does not tell (...) (28 years ago, 2-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Robot classification
|
|
Katt, Good question, and I liked Tom's response. If I may I'll add my two cents. From Tom's list: (...) Definitely and its not the kind of software they teach these days. When's the last time a program crash in your CS-101 class put a hole in the (...) (28 years ago, 2-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Shaft Encoders
|
|
Does anyone see a problem with using the pot thats built in a RC servo as its shaft encoder. I have modified it so that it makes contact once every revolution. Would this mechanical contact create any "bounce" that would interfere with the enoding (...) (28 years ago, 2-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Robot classification
|
|
(...) Kat, That question is one that a LOT of schools are asking right now. At the present time (in my opinion) it is a blend of different kinds of engineering, which is very much determined by the type of project that your doing. For example, (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Robot classification
|
|
Katt97> What sort of engineering would robots, as a whole, be put in? Katt97> Or would robotics be considered a blend of different kinds of Katt97> engineering? -Kat Yup, blend. You got software engineering (art?) for the code to make it work. You (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Robot classification
|
|
What sort of engineering would robots, as a whole, be put in? Or would robotics be considered a blend of different kinds of engineering? -Kat (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Piggybacked L293's on HB causing VR problems?
|
|
One of our HB's has been "snake bit" for the last few weeks, exhibiting sporadic downloading problems, etc. We are running the piggybacked L293's (ala 6.270 board) on it, and the TI chips (non-piggybacked) on the others (which don't have problems). (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: AS11
|
|
No, I didn't find an AS!! manual on the HB HP. Do you have one? Where did you get it from? It would really help. Though by now, I deciphered most of the language already. It still would be great to have as a reference. ---...--- ericson mar Master (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(...) PLEASE, when you want to share a large file with members of the handyboard mailing list, first ask who wants the file and then send it to *ONLY* those people. I was gone last week and unable to check my mail and when I came back I found that (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re[2]: IR concept
|
|
Chuck, I love the wire whisker! Have you got any more tricks and tips I could steal??? Richard ___...___ Reply Separator ___...___ Subject: Re: IR concept Author: cmcmanis@freegate.net at Internet-Mail Date: 29/03/97 00:58 Adam wrote: > An (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Digital Outputs
|
|
Gordon, The steps on how to turn the SPI into 4 digital outputs are in the HB FAQ - off the top of my head I think it goes something like this.... poke (0x1009, 0x3c); /* set the 4 DDR bits for SPI (reg D) */ bit_set(0x1008, 0b00000100); /* set MISO (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Analog ports....
|
|
To: Demian Bigelow <dbigelow@bu.edu> Subject: Re: Analog ports.... Cause I was wondering how well it works. To my understanding, analog phototransistors' outputs depend on intensity. I found that variations in the colors of surfaces reflect (...) (28 years ago, 1-Apr-97, to lugnet.robotics.handyboard)
|
| |
| | Re: AS11
|
|
You have an assembler manual? I only have the HC11 reference. Where do you get one of those? Thanks! :) ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | Servo encoder.
|
|
Does anyone see a problem with using the pot in a modified servo and an encoder. I have modified it so that it makes contact once every revolution. Would this mechanical contact create any "bounce" that would interfere with the enoding ticks. (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | connecting Scott edwards mini-ssc to handy board
|
|
Hi, Does anyone have any insight to offer on connecting the HB to the scott edwards electronics mini-ssc servo controller? I wanted to connect directly to the HB through the onboard rj12 jack. Looking at the schematics It seems I might be able to (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | LM2931
|
|
Is it allright if I replace the LM2931 on the Handyboard Interface/Charger Unit with 78L05 (same package)? (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | re: IR frequency / o'scope adjustments
|
|
(...) You want to trigger off of the signal, or maybe the line; the knobs to turn are generally marked "slope" and "level" or something close to this. I usually use a positive slope, I just like the signal to be going in a positive direction at the (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | Re: Digital Outputs
|
|
(...) Adam, Have you thought about using a some of the Motor Chip driver digital output lines(if you don't need two motor driver chips)? If you pull one of the L293 chips you can free up 4 digital output lines very easily. It would, of course, (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
| |
| | Re: AS11
|
|
(...) DW - Define word (intel assembler) FDB - Form Double Byte Constant (motorola assembler) Example: (in HC11 memory order) ORG $100 DW $1234 DW $5678 Memory dump start at address $100, you will find: Address Data $0100 $12 $0101 $34 $0102 $56 (...) (28 years ago, 31-Mar-97, to lugnet.robotics.handyboard)
|
