 | | Re: serial interface
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(...) It sounds like you have a bad solder joint. I would take a multimeter set on the conductivity mode and test pins 2 and 3 of the female serial connector on the interface/charger board. Pin 2 of the serial connector connects to pin 8 of the (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | serial interface
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Hi: I am sorry that the massage was sent several times, it was not intended. I was able to get the serial connection to stabilize ( the least movement will throw it off), however, when connected to the board, the green LED will come on, and it will (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | Serial interface
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Hi Fred: Thank you for returning my call. The problem I am having is with the serial interface. The green light is not coming on when it is connected to the computer. I tried to jiggle it to see if there was a loose connection, and I found that (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | Handyboard serial interface
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Hi Fred: Thank you for returning my call. The problem I am having is with the serial interface. The green light is not coming on when it is connected to the computer. I tried to jiggle it to see if there was a loose connection, and I found that (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | Handyboard interface
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Hi Fred: Thank you for returning my call. The problem I am having is with the serial interface. The green light is not coming on when it is connected to the computer. I tried to jiggle it to see if there was a loose connection, and I found that (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | handyboard interface
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Hi Fred: Thank you for returning my call. The problem I am having is with the serial interface. The green light is not coming on when it is connected to the computer. I tried to jiggle it to see if there was a loose connection, and I found that (...) (28 years ago, 22-Jul-96, to lugnet.robotics.handyboard)
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| | compass datasheets
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(...) In case it's useful, a while back I got the datasheets through fax-back and put them on the web at (URL) Randy (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | 5V reg. WITH delayed reset
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This is an interesting device for all HC11 applications: The LM2925 Low dropout regulator with delayed reset (from National Semiconductor). It is a 5 lead TO220 package including the usual 5V regulator (750 mA min, 1.2 A typ.) plus a reset output (...) (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | Bend Sensors/ ES Chasis kits
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Greetings! I have been trying to get a hold of some AGE bend sensors. It appears that AGE does not make them any more. Is that true? Are there any similar products that can be used instead (with the HB). Has any one used the (wooden?) chasis kits (...) (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Electronic Compass?
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(...) I messed with the Vector2X (~$50 from Jameco) on the miniboard. It was supposed to have a SPI compatible bus, but I couldn't get it to work with SPI bus. I got it to work with one of the other IO ports. Using the handyboard with IC might make (...) (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | Electronic Compass?
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Has anyone gotten a relatively cheap (<$100) electronic compass, like the KVH100, to i/f to the Handyboard? I believe it uses the SPI architecture which matches the Handyboard. * Michael L. Ross/C33 | Lockheed Engineering & Sciences Co.**** * (...) (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | web site update
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Hi all, I've made some cosmetic changes to the HB web site. If anyone has any feedback, positive or negative, i'd like to hear it. Thanks, Fred (28 years ago, 19-Jul-96, to lugnet.robotics.handyboard)
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| | BackLite LCD
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Hello! Does anyone know of a good backlite LCD display that could be easily be used with the Handy Board (hitachi chipset)? Thanks.. joeo@symtec.com (28 years ago, 18-Jul-96, to lugnet.robotics.handyboard)
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| | Re: encoders
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(...) It's an icb file, based on the encoders.asm source included with IC. (28 years ago, 18-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Servo Motor
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Hi Hajime, Here's the rundown for connecting the servo to the Handy Board: 1) Assuming you're using digital port 9, you will need a connector like this: _ =====| |== <--- connect the WHITE wire from the servo here | | <--- remove pin to polarize (...) (28 years ago, 18-Jul-96, to lugnet.robotics.handyboard)
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| | Where can I get GP1U52X IR sensors?
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Hello there Handyboard users in the world, I read a lot about these IR sensors: Sharp GP1U52 or GP1U56Y. I would like to use some of these sensors in my own robot, that I build around a 8051 and a Forth interpreter. Now it has a few bumper switches (...) (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | Servo Motor
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Hello! Could anybody please tell me the proper step in controlling the servo motor by HB ? ^s I connected the servo motor to the HB and typed in the servo motor control functions but none of them are working... Thanks in advance. (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | encoders
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(...) if your counting program is written in IC, and not assembly lang, it might be too slow and occasionally miss counts. -F (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Handyboard Kit.
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|
(...) That is a mistake in the directions. They should be 47uF axials, like you have. I will fix this now. -Fred (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | encoders
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So, nobody has any experience with hall effect sensors as encoders, eh? :-) (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | Handyboard Kit.
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Hi to everyone, I just got my Handy Board Kit and going through the very first step of the assembly i found the first problem. In the handy board assembly instructions it describes capacitors C15 and C16 as 4.7uF Tantalum capacitors but in my kit (...) (28 years ago, 17-Jul-96, to lugnet.robotics.handyboard)
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| | Serial Com.
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The FAQ has information on sending and receiving info thru the serial port. My Question is: How do I do the other end in C. This is what I got the computer side of the serial cable: port = open("/dev/ttyS3",O_RDWD); <- THis is from my head, not (...) (28 years ago, 16-Jul-96, to lugnet.robotics.handyboard)
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| | Re: sony ir
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Dirk, Without actually seeing your icb function, it would be hard to determine exactly what is going on. But here are some guesses: 1) When you are modifying control registers in MC, make sure that you use bit commands so that you don't set or erase (...) (28 years ago, 16-Jul-96, to lugnet.robotics.handyboard)
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| | sony ir
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Thanks to Joeo for the hints on caputuring data from the handyboard. I have another question: Why does my sony infrared system stop working after calling a function which I have defined in an icb file? I have a number of functions defined in that (...) (28 years ago, 15-Jul-96, to lugnet.robotics.handyboard)
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| | strange encoder problem
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I'm using a hall effect sensor as a shaft encoder. 8 magnets have been placed on a wheel of my bot, such that they turn the sensor on and off as they pass by. I have written a small program to test the encoder, which makes the robot go forward 10 (...) (28 years ago, 15-Jul-96, to lugnet.robotics.handyboard)
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| | Re: HB
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HI Check for a short between pin 11 of the 'hc374 and +5V. Pin 11 is supposed to be connected to pin 9 of the 'hc138. It is the select line for the 8 flip-flops in the 374. If you have a logic probe, check either of these pins. They should be (...) (28 years ago, 15-Jul-96, to lugnet.robotics.handyboard)
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| | HB
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(...) connections so i am at a loss for knowing which leads to test. (...) (28 years ago, 15-Jul-96, to lugnet.robotics.handyboard)
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| | tables
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Hi, Can anyone tell me how to store a big table of data that the handy board has collected into a file for permanent storage? Thanks, -Dirk (28 years ago, 13-Jul-96, to lugnet.robotics.handyboard)
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| | IC memory map
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(...) Right now, IC reserves 16k for shared code and data space. 8k is for the multitasking stacks and interaction download space, and 8k is for pcode. -- Randy (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Malloc
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8K might be all that IC allows for user global data. The memory map can be rearranged, but only at the compile-time of the IC application. Newton Labs should be able to give you a definitive answer about the memory organization of IC 3.1. -Fred In (...) (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | Malloc
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I'm trying to allocate three large arrays to store data in... Such as the following declared globally: char stoA(4000); char stoB(4000); char stoC(4000); and then some code...not very long, just to capture data and store it in these arrays from the (...) (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | Re: status of the expansion board
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Hi I think that Fred's idea for the expansion board is OK, but I'd also like to see a "bare-bones" expansion board for those hardware hackers amongst the HB community. What I mean is just a simple board with a few more analog input's, and two sets (...) (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | Re:
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(...) search on "h-bridge" they have a H-bridge that can handle 3A @ 55vdc. I don't know if it can be piggybacked with driver transisters or not but the wonderfull part is if you would like they will send you FREE samples (3ea at a shot, with up to (...) (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) No, it will use just one '374 enable. -Fred (28 years ago, 12-Jul-96, to lugnet.robotics.handyboard)
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| | Re: status of the expansion board
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(...) . . . (...) Where can we find out more about the LEGO sensors? Are they part of some specialized kits? Do they sell them individually? Is there an online catalog? (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | (no subject)
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Could someone give me info on where I might find high-current (10-15 Amp) H-Bridges? I am willing to build or buy as necessary. My TIP120/125 bridge is working great, but the motors are drawing a bit more than these transistors should be handling. (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | unsubscribe
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---...--- unsubscribe arp4@lehigh.edu (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | Re: status of the expansion board
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I'm curious as to how the Polaroid sonar and servo circuits will work. Will they simply steal timer lines from the HB's digital headers, or do you have something more complex worked out? For example, will the sonar's ECHO signal still go to a (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | status of the expansion board
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Hi all, Many people are asking about the Expansion Board. It has been on the "back burner" because my publisher is demanding text, not technology. But I do plan to release another rev this summer. My ideas about what should go on it have evolved, (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Newbie Questions (Sensors)
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|
(...) using the LEGO light and angle sensor is non-trival; custom HW and SW drivers are required. See ftp://cher.media.mit...gosens.txt for details. (...) 0-12 inches is hard, but 0-1 or 2 inches can be done with a simple IR reflectance sensor. See (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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| | Re: L293 vs TI 754410
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Hello there. I've piggybacked three chips, for a total of 2.6A (2 1A chips and 1 0.6A chip, piggybacked with heat sink compound slathered between all the chips and between the top chip and the heat sink I've put on it). I haven't had any problems (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Newbie Questions (Sensors)
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Greetings! I have a couple of "newbie" questions if you please: I ordered from LEGO, their "sensor suite". I managed to wire and use the touch sensor. But I am puzzled about the use and wiring of their Light Sensor (9890) and their angle sensor (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Source for LCD's
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|
(...) From the components supply list at (URL) compatible retail display is the Hitachi LM-052L. Supplier info for Hitachi parts is available at (URL) Other valid manufacturers/part numbers: Alps LDS7A1792A; Optrex DMC16249. (...) Electrically, any (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Re: L293 vs TI 754410
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|
(...) The TI chips should work fine. You might not get a full 2A, but at least a 50% improvement. (...) The traces can handle it, but the PolySwitch fuse should limit total current to about 4 to 5 A. You might need to remove the fuse and live (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Source for LCD's
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FYI all electronics ((URL) has 3 LCD displays that could be used with the handy board: Optrex DMC-16207 16 char * 2 lines Hitachi LM052L 16 char * 2 lines Sanyo LCM-524-87H4 40 char * 2 lines Price is 12$ each, any model. Can someone confirm (or (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | L293 vs TI 754410
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|
HI Just wondering what kind of success anyone has had with piggy-backing the L293's. My HB came with the TI h-bridge chips and I wanted to know if I could use the same technique. I figure if two chips can be run in parallel, giving up to 2A for each (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Cursor Position
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Hi, I was wondering if there is a way to position the cursor directly. Using IC's printf function works great, but I can't position the cursor exactly where I want it. I'm trying to display a dynamic bar graph and some other information based on the (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Questions, questions, questions......
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|
(...) The Handy is like the 6.270; both have dig out latches going to the motors. The RW drives the motor ctrl pins directly. A re-write of the system PWM routines could provide finer than 8 levels of control, even w/o needing HW timer lines. (...) (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | Questions, questions, questions......
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Hi I've just built my first HandyBoard (thanks for the great service Prabal), and have a few questions (that I can't find in the FAQ). What are the hardware-imposed software differences between the HandyBoard and the 6.270/Rug Warrior boards ? ie it (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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| | re: RE: code
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Me Too ! Jens (28 years ago, 9-Jul-96, to lugnet.robotics.handyboard)
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| | Re: RE: code
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(...) Me Three! (28 years ago, 9-Jul-96, to lugnet.robotics.handyboard)
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| | RE: code
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---...--- From: Jeff Keyzer[SMTP:jkeyzer@calweb.com] Sent: Monday, July 08, 1996 7:30 PM To: Handy Board Subject: code I'm struggling to program my bot. In an effort to make my life slightly easier for myself, I'm searching for any bot code that (...) (28 years ago, 9-Jul-96, to lugnet.robotics.handyboard)
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| | code
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I'm struggling to program my bot. In an effort to make my life slightly easier for myself, I'm searching for any bot code that anyone would like to offer me. I'm especially interested in routines that involve navigation, mapping, shaft (...) (28 years ago, 9-Jul-96, to lugnet.robotics.handyboard)
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| | HB Mail List
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Please add me to the Handy Board mailing list. Thanks, Bill william.carlquist@tek.com (28 years ago, 8-Jul-96, to lugnet.robotics.handyboard)
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| | LegoBUG question: I can't find item # 5146/7
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|
Dear All, I am writing a purchase request for buying the parts of LegoBUG. I refer to Allen Ambler's list to identify the required items. By looking at the Lego Catalog I was able to find all Lego parts, except the item # 5146 or 5147 ("plates (...) (28 years ago, 8-Jul-96, to lugnet.robotics.handyboard)
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| | IC identification
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I have several IC's that I suspect may be opto-isolators but have been unable to locate any pin-outs/data sheets. I wonder if anyone can help me identify them? They are 8-pin HP IC's with the followin on them: top row, the # 4371 and bottom row, the (...) (28 years ago, 6-Jul-96, to lugnet.robotics.handyboard)
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| | Re: torque requirements of 200lb robot
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|
(...) In my freshman physics class (back in the stone age :-) we went over the notion of torque and how gears "amplify" torque. And what we showed was that you could move an arbitrarily heavy object with any motor your wanted if you had enough (...) (28 years ago, 6-Jul-96, to lugnet.robotics.handyboard)
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| |
| | (no subject)
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(...) Uh, Wow.. My bot is about 30 - 40 lbs so far.. I have the gear ratios set for a top speed just over walking speed (if all goes as planned). While I cannot verify anything until I get the bugs worked out, I would estimate that the gearing (...) (28 years ago, 6-Jul-96, to lugnet.robotics.handyboard)
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| | Re:
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System User wrote: snip (...) have? I want to move a 200lb platform on 8" wheels. Do you think they could do it? My partner (who also reads this list) thinks I'm nuts to suggest buying two new drills and cutting them into pieces. My resoning is that (...) (28 years ago, 5-Jul-96, to lugnet.robotics.handyboard)
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| | (no subject)
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Oh well, I THOUGHT I was done with my H-Bridge.. It seems to be running a bit hot. I had originally tested the motors with a bench supply, and the current never exceeded five amps, so I thought the TIP 120/125 circuit was "just right". It now seems (...) (28 years ago, 5-Jul-96, to lugnet.robotics.handyboard)
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| | Copy rights
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Is there a law against modifying the IC source code for my own purposes? Benny (28 years ago, 5-Jul-96, to lugnet.robotics.handyboard)
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| | www.newtonlabs.com temporarily down; please use alternate address
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The DNS for www.newtonlabs.com is temporarily broken; please use (URL) in the meantime. Sorry for the inconvenience. -- Randy (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Handyboard LCD
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(...) Go to the IC Source page, linked off the software resources page. This has links to the source code. YOu need the pcocde for the HB, the special as11 assembler, and a shell script facility for the as11_ic program. these are all pthere. look at (...) (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Handyboard LCD
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(...) Where I can get the pcode sources? I downloaded pcode_pc.zip from Cherupaka, but the .asm file included talks about "Rough Warrior" not handy board... also there are a number of defines to supply... Is that the right source? and if it is what (...) (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | VBX
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Anybody tried to write a visual basic code for the handyboardd. Hachemi (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | Re: unsubscribe
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Kevin, you are removed. Reminder to all: to get removed, send e-mail to me personally so everyone doesn't need to see your request. For more, see enclosed. Thanks. -Fred In order to remove you from the Handy Board mailing list, I must have your (...) (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | unsubscribe
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unsubscribe schmit@hooked.net (28 years ago, 4-Jul-96, to lugnet.robotics.handyboard)
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| | unsubscribe
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Please, unsubscribe from your mailing list. Not (yet?) working with the handyboard. Bye, Martin Spanjaard (28 years ago, 3-Jul-96, to lugnet.robotics.handyboard)
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| | Re: Handyboard LCD
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there are two assemble-time constants LCD_ROWS and LCD_COLS that can be changed to build new versions of the pcode_hb.s19 file for different LCDs. but is sounds like your 20x4 display is incompatible altogether---you should see something. i would (...) (28 years ago, 3-Jul-96, to lugnet.robotics.handyboard)
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| | PIC Speed Controller pages
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I've put the design for my PIC based servo speed controller online at : (URL) code links are at the end of the article. (28 years ago, 3-Jul-96, to lugnet.robotics.handyboard)
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| | Handyboard LCD
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Please, anyone has any suggestion to solve this problem? I haven't used the LCD display in the parts list, but one LCD 20 char by 4 rows... why? 8^) well, I've got 3 of this around and to buy another seemed not so good idea! This display doesn't (...) (28 years ago, 3-Jul-96, to lugnet.robotics.handyboard)
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| | Re: How to disable ROM on E9 part?
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(...) Thanks Fred. Turned out I had a damaged MAX232 chip on the charger board that was powering up the handyboard via the TXD or RXD line. Once the chip was removed the 1.4V on the handyboard went away. I believe this also damaged the HC11, so now (...) (28 years ago, 2-Jul-96, to lugnet.robotics.handyboard)
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| | order with digital microsystems (fwd)
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Dear Oriol, We sent an e-mail to you regarding your order several weeks back. Our dns server has been having difficulty resolving certain addresses and yours may be one of them. So, I hope you get this reply through the Handy Board listserver. We (...) (28 years ago, 2-Jul-96, to lugnet.robotics.handyboard)
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| | order with digital microsystems
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To my knowledge, Prabal tends to ship orders within a single day. You should probably send him e-mail directly or try calling him to verify that your order went through. -- Randy (...) (28 years ago, 2-Jul-96, to lugnet.robotics.handyboard)
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| | Re: How to disable ROM on E9 part?
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Hi Curt, something is wrong with your board. 1stly, the red LED should be completely off when in boot download mode. this is stated repeatedly in the doc's, but i reiterate it here. 2nd, you should not have 1.4v on the CPU when pwr is off. i don't (...) (28 years ago, 2-Jul-96, to lugnet.robotics.handyboard)
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| | Re: How to disable ROM on E9 part?
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I hate replying to my own posts, but I think I know a bit more about the problem now, therefore different questions are in order. Answer to my first question: It looks like the HC11 is supposed to automatically clear the EEPROM, CONFIG, and RAM if (...) (28 years ago, 1-Jul-96, to lugnet.robotics.handyboard)
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| | Ordering of handy board.
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Maybe this is an off topic but ... I ordered a handy board to Digital Microsystems about 5 weeks ago and I still know nothing about it. I just wanted to ask (in case any of you have experience dealing with this supplier) how long does it usually (...) (28 years ago, 1-Jul-96, to lugnet.robotics.handyboard)
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| | How to disable ROM on E9 part?
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Help! I'm trying to get my handyboard to go into download mode via the STOP/Power-On sequence, and it doesn't go into the correct mode. The PWR LED doesn't go out when I do this sequence. Have tried downloading with DLM, HBDL, and DL to no avail (...) (28 years ago, 1-Jul-96, to lugnet.robotics.handyboard)
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| | cher is up again
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but the incoming directory is disabled. i don't see any way around this problem; if there are incoming directories, it seems this gang of crackers will find them. i would still like to encourage people to contribute robotics related stuff, but it (...) (28 years ago, 1-Jul-96, to lugnet.robotics.handyboard)
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| | cher is shut down until further notice
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until i figure out how to disable the incoming directory from crackers. -Fred (28 years ago, 1-Jul-96, to lugnet.robotics.handyboard)
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| | timer flags
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The timer flags are cleared by either loading the accumulator with the bits you want cleared and then storing them in the timer flag register, or by using BCLR with a complemented mask. -Dirk "I speak from experience" (28 years ago, 29-Jun-96, to lugnet.robotics.handyboard)
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| | (no subject)
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In regards to the bit manipulations of the timer flags... I concede. At this time I have neither the mental capacity nor the desire to figure out what is correct. After copying the paragraphs earlier, I am only sure that the documents could use some (...) (28 years ago, 29-Jun-96, to lugnet.robotics.handyboard)
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| | Re:
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(...) Lyle, The following provide PLCC-to-breadboard adapters: Amaze Electronics Co. Tel: 1-800-996-2008 Web: www.hooked.net/users/amaze Technological Arts Tel: 1-416-963-8996 Web: www.io.org/~techart You can see their ad on the July 1996 issue of (...) (28 years ago, 29-Jun-96, to lugnet.robotics.handyboard)
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| |
| | Re: your mail
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(...) Very confusing, especially since at the beginning of the same file, there are the lines: * Setup Interrupt for Encoders * LDX #BASE BSET TCTL2,X %00001100 /* Interrupts TIC3,TIC2 rising edge*/ BCLR TFLG1,X %00000010 /* Clear IC3,IC2 Flags */ (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | hb basic questions.
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Well this is my first post and my first look at the handy board. I have a couple of basic questions, sorry if this is maybe asking for the obvious but I didn't find answers to these on the web nor in the archive. Anyway thanks already for all and (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | Easiest way to add two more input and output compares?
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Well, I have ny Handyboard running a little lawnmower around, but I can only feasibly get two PWM signals in for processing and relaying on to the motor drivers. I need two more signals (drive and steering, all I'm doing now is camera pan/tilt) to (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) And to add to all the confusion, see page A-15 of the same book, which contradicts what page 10-14 says. I followed he instructions on page 10-14 and it worked. Also remember those odd word-blitz methods of clearing a single bit only seem to (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) I found this entry in the HC11 handbook, page 10-14. It may help.. "The most common way of clearing a status flag bit in the timer flag registers is to load an accumulator with a mask that has a one in the bit(s) corresponding to the flag(s) (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | BCLR TFLG1,X %11111101?
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In the file encoders.asm, there's a section like: Port1_ShaftInt: LDX variable_port1_shaft_count [stuff deleted] BCLR TFLG1,X %11111101 RTI I'm trying to figure out what the BCLR line does. Why does it clear the bits of all the timers _except_ the (...) (28 years ago, 28-Jun-96, to lugnet.robotics.handyboard)
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| | Re:
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(...) Lyle, The following provide PLCC-to-breadboard adapters: Amaze Electronics Co. Tel: 1-800-996-2008 Web: www.hooked.net/users/amaze Technological Arts Tel: 1-416-963-8996 Web: www.io.org/~techart You can see their ad on the July 1996 issue of (...) (28 years ago, 27-Jun-96, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) I agree that the "software" solution in an HC11 is limiting. It is this limitation that I am trying to overcome in hardware. Rather than shift a bit-pattern out for PWM, I would use three of the built-in timers to accomplish the task. One (...) (28 years ago, 27-Jun-96, to lugnet.robotics.handyboard)
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| | Re:
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(...) Actually an 'HC11 isn't a very efficient PWM controller. However a Microchip PIC is. (or a Motorola 68HC05, or a Siemans 87C752, etc) These single chip microcontrollers are both cost effective and easy to use. In the July (or August) '95 issue (...) (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | (no subject)
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My earlier posting has left me thinking.. (Suprise!) A MUCH more efficient way of doing PWM would be to use another 'HC11. The counter-timer circuits are perfect for the job, and the SPI would serve just fine for communications. Of course, this (...) (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | (no subject)
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What's Happening?? (Or, trying to spark some interaction) I currently am working on a few hardware projects for the Handy-Board.. As I may have described earlier.. Current projects include 4 boards, each on a PC slightly smaller than the (...) (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | Re: ??
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(...) Ahh, well that's good, and bad. :-) C'mon everyone, what's everybody _doing_ with their handy board? Letting it sit on the desk, beeping and collecting dust? (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | ??
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Just curious if something is wrong, I haven't gotten mail from the list in quite some time. (4 or 5 days) (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | 6811 Suppliers
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I just bought a MC68HC11A1FN from BG micro for $7.99 you can find them at (URL) ,,, (o o) ===...===oOO==(_)==OOo===...=== "Its difficult to work in groups when you are omnipotent...." -Q (URL) Mike Downey mdowney@eng.ua.edu (URL) .oooO Oooo. (URL) (...) (28 years ago, 26-Jun-96, to lugnet.robotics.handyboard)
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| | Re: downloading
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(...) I would say you should check for a short between the E Clock and another trace. Curt Mills, WE7U. hacker@tc.fluke.com archer@eskimo.com we7u@we7u.ampr.org (URL) (28 years ago, 21-Jun-96, to lugnet.robotics.handyboard)
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| | downloading
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I, too, have had problems downloading pcode to the latest handy board I have built. I have replaced every ic with the ic's from a working handy board, and have tested each trace from all 4 of the ic's that were installed (6811, 132, 62256 and the (...) (28 years ago, 21-Jun-96, to lugnet.robotics.handyboard)
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| | handyboard
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hello, i wrote a mail about an hour ago. this message was not really complete. i shall explain the problem. i am a student electrical engineering at the uneversity of twente, the netherlands. we were ordered to design something. we decided to built (...) (28 years ago, 20-Jun-96, to lugnet.robotics.handyboard)
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