 | | analog expansion header
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How do you use the expansion header on analog inputs 0 to 3? I could not find specifics on its use in the documentations. Thanks, Nathan Marcantel nathanm@mail.utexas.edu 512-272-8024 6517 Carisbrooke Lane Austin, TX 78754 (28 years ago, 27-Feb-97, to lugnet.robotics.handyboard)
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| | SPI Interrupts (Vector2X)
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I am at it again! I am trying to get the Vector2X working on the SPI bus of the handy board. I have read the docs, and they seem to make sense, however, I cannot get the code to work. I have the Vector2X running as a master, my assumption is that (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | Re: handy board analog inputs
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yes, they do. In case you didn't know, schematic diagrams for the Handy Board are available from the web site. They show this wiring, including the fact that the user knob is wired to PE7. -Fred -- This message was composed using Articulate Systems' (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | handy board analog inputs
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Hello, I am trying to run an assembly language program on the handy board without IC. Do the analog inputs on the handy board, marked 0-6 on the board correspond exactly to PE0-PE6 on the chip? Does the 0 input of J1 go directly to the PE0 pin? I (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | Adding Functions to IC
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Is there a way to add functions to IC? Maybe they're already somewhere that I am not aware of. I need to add ir_xmit_on and ir_xmit_off to my functions list. I know that I can poke them but I just wondered if they were already on a functions list (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | handy board analog inputs
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Hello, I am trying to run an assembly language program on the handy board without IC. Do the analog inputs on the handy board, marked 0-6 on the board correspond exactly to PE0-PE6 on the chip? Does the 0 input of J1 go directly to the PE0 pin? I (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | use of op amp circuits with the Handy Board
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Does anyone know how to get a negative 5 volts from the Handy board for an op amp amplifier circuit or set equations to figure out the gain of an standard op amp as the 741 or LM339 using Vee as ground and Vcc as +5 VDC? The equations only seem to (...) (28 years ago, 26-Feb-97, to lugnet.robotics.handyboard)
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| | Umsubscribe
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Please unsubscribe me from the mailing list. (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Turning IR xmitter on and off
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Hi all, I've had a few questions on this. The ir_xmit_on and ir_xmit_off routines that I use are in hb_ir.c. You could easilly write them yourself - ir_xmit_on just does poke(0x1000, 0x40) and ir_xmit_off does poke(0x1000, 0). Note that in hb_ir.c (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | sonar,radar
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Hello, I am building a robot with the handyboard at school with my lab parteners. you have seen them on the list before. Jim T., and Richard Vannoy. Our robot is doing fine with the IR's and bumpers. We have the handyboard software for sonar, but do (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motor Speeds
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(...) When I built the PWM controller out of a PIC I gave it 100 speeds representing 0 - 100% width. So a speed of 50 is a 50% duty cycle signaal. The disadvantage of the Handiboard scheme is granularity. In particular I have found that for really (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR Collision avoidance
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(...) OK. (...) The transmitter is basically a modulator made from two 555 timer chips. One timer does 200-1000 Hz (we use 500) while the other does 38 KHz. On a scope, the output looks somewhat like.. |||...||| |||...||| |||...||| | | | | | | | | | (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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Some comments and a few questions for Chris (...) We have "forward" and 45 degrees right". We wall hug to the right while you hug to the left. We ignore IR to left and use only the left contact switch for collisions (rare). (...) We had way too much (...) (28 years ago, 25-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR Collision avoidance
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The Handyboard has a circuit (U7a, R4, C6) that generates a 38KHz signal. That drives an amplifier that then goes to J7, the IR LED output. If you hookup an IR LED to this jack (with a series resistor) then when you turn on TOC2 using ir_xmit_on() (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) I don't have the RS part numbers, but I bought them within the last few months so if there are "old" and "new" ones mine are probably "new". I checked out the RS web page and found that what they currently have is RS part number 276-137, and (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | IR Collision avoidance
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Chris or anyone who cares to respond, You put your message on the mailing list concerning the IR avoidance. I have a question about the hardware also. How are the leds powered? Are you pulsing them some way or what? I guess the decoder is what is (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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This question seems to come up a lot here so I thought I'd post to the list rather than reply individually. Here's what I'm doing for IR collision avoidance. First, the hardware: I'm using 3 Radio Shack IR LED's in parallel and 3 Radio Shack IR (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Using PD2 and PD3
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I am building the circuit that is in the mobile robots book on pg. 108 to turn on and off my IR led's. Is it best to use the bit_set to turn them on and off? Where is the best place to get the 5 volts I need for the 74o4 chip? How do you read the (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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Hey Chris, Thanks for the ideas, one questiom?. Can you pass along the Radio Shack part numbers? It seems like there are older and newer RS parts out there, what are you using? JTW In your message you said: (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: motor voltages
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(...) You can use diodes to drop the voltage but you need to attack the HB, cutting traces and so on. Depending on how you are mounting things, why not just use a lower voltage battery pack? Six Nicad cells give a nominal 7.2 volts, enough to drive (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motor Speeds
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(...) into (...) port. Consider implement PWM (for Motor Control) with second HC11, why not implement DC motor Controller with Frequency Lock Loop to control motor position and regulate motor speed? Suggested Specification: M68HC11 PWM Output using (...) (28 years ago, 24-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motor Speeds
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(...) Now this is starting to make sense. We use -100 to +100, but it does seem silly to have a resolution of 201. Much more logical that the routine converts to steps of lesser resolution, and 7 speeds certainly seem reasonable. (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re:
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(...) Looking at lib_hb.c: void motor(int m, int speed) { if (speed>100) speed=100; if (speed<-100) speed=-100; if (speed >= 0) _set_motor(m, 0, (speed + 3) / 14); else _set_motor(m, 1, (-speed + 3) / 14); } Keith (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: More Motor Speeds
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(...) Either I'm confused or we're talking two different animals. Our pcode_hb.s19 that came with the Gleason Handyboard, allows variable motor speeds from motor(0,-100) to motor(0,100) with great and fine control. In our first test we converted (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: More Motor Speeds
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(...) You will have to rewrite the code in the interrupt functions. It isn't "hard" but it does require that you understand what IC is using the various timers for. The best documentation for that is the PCode itself. I don't believe you can use the (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: More Motor Speeds
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(...) ???? 7 speeds??? We use the IC that comes with the Gleason Associates Handyboard where motor(0,100) runs motor 0 full speed ahead motor(1,-33) runs motor 1 backwards at 1/3 speed where speeds vary from 1 to 100 in either direction. Can't you (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I had considered doing -100 to 100 PWM in hardware. I even went so far as to draw up the schematics for it... Then I read the HC11 manual, and realized that instead of my "little" circuit, I could just use another HC11.. The internal timer/counters (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: More Motor Speeds
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it's harder than you might expect, b/c the PWM routine is 'hard-wired" into the pcode file. basically, you have to make the changes in pcode.asm, and reassemble the pcode_hb.s19 file. -fred In your message you said: (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | More Motor Speeds
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I want to increase the resolution of the motor driver routines provided by Interactive C, so that there are more than 7 speeds. Using the method of generating PWM signals in the Mobile Robots Book, this seems easy. However looking at the primitive (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) I'm sending this to other members of our robotics team because we JUST mastered wall-hugging IR this week. They may have other things to add. (...) Here's the pseudo code: Start Any bumpers hit? YES - Execute the back up, turn 90 degrees left (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | motor voltages
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Hello again, Thanks to all who responded to my query regarding motor chips on the Mini Board. Now that I have the more capable motor drivers installed, I want to lower the voltage that my motors see. They are getting straight 9V from the motor chips (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | Re: motor voltages
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I (...) Use a couple power diodes in series with the motor power supply, _NOT_ the motor itself. You'll need pretty heafty diodes if you go this route. A typical Si diode drops between 0.6 and 0.7 volts when forward biased. String a few together and (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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| | IR collision avoidance
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Howdy, Is there anyone out there that can explain programming IC for IR collision avoidance. I have read the mobile robots book and everything in the IC manual I downloaded and the 6.270 hardware info but still haven't got a good grasp of the best (...) (28 years ago, 22-Feb-97, to lugnet.robotics.handyboard)
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| | Re: motor drivers
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David, You can replace the L293 on your MiniBoard with the TI SN754410 with no adverse effects. The two chips are pin-for-pin compatible. - Prabal (...) (28 years ago, 22-Feb-97, to lugnet.robotics.handyboard)
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| | motor drivers
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Hi all, I am running some motors from a Mini Board and I want to up the current output of the board. I have noticed that the motor drivers on the MB are the L293 chips just like the Handy Board. Now if the 1 Amp motor chips that many Handy Board (...) (28 years ago, 21-Feb-97, to lugnet.robotics.handyboard)
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| | SPI Routines in IC
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Anybody have any routines or know of any published information for using the SPI with IC for: ...use with Dallas Semi's serial real time clock - DS1202 ...use with 12 Bit serial A/D - LT1298 ...use with Dallas semi's Thermomerter - DS1620 Thanks a (...) (28 years ago, 21-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Digit outputs....
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Rather than trying to figure out the hex for the bits, I use the IC binaray number format, "0b". I set the bits using a binary mask, for example, to set the MOSI pin high, I use: bit_set(0x1008, 0b00001000) then to set the MOSI pin low, I use: (...) (28 years ago, 20-Feb-97, to lugnet.robotics.handyboard)
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| | Digit outputs....
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I've tried to program the digital outputs from the SPI header J6 on the HB with no success. I pump the values into the HB as per instruction form the FAQ note and measure the 4 outputs. No high/low, just some sort of oscillation. What could be my (...) (28 years ago, 20-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) This is also excellent advice. On one R/C car I had, I ended up having to simulate the signal input to the controller because the h-bridge was so screwy but it does save you from having to build your own. On a related note, Radio Shack sells (...) (28 years ago, 19-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) Why not use the H-bridge that is already on the bulldozer? If you work backwards throught the motor driver circuitry, or use the RF controller to send commands to the dozer and see what voltages change you can figure out where the inputs to (...) (28 years ago, 19-Feb-97, to lugnet.robotics.handyboard)
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| | Re: running .s19
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shouldn't you be going into expanded mode, not single chip? (...) (28 years ago, 19-Feb-97, to lugnet.robotics.handyboard)
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| | Re: running .s19
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does your program to anything else other than attempt to leave special mode? You could have it write a value to the motor address ($7000); that would be a more visible indication that it is running. BTW, why is your first instinct to take it out of (...) (28 years ago, 19-Feb-97, to lugnet.robotics.handyboard)
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| | running .s19
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Hello, I am trying to use normal .asm files assembled with as11 on the handy-board. I am not using IC. Although my .s19 file downloads fine I don't think it is being run. My code begins at $D000. I use an ORG statement to set $BFFE:$BFFE to $D000. (...) (28 years ago, 19-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar
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Sriram, (...) It is on the outer edge of the module neer the ribbon cable connector. Its exact location is indicated by a circle with a + sign to indicate the polarity. (...) I simply (temporary) soldered to the connector at the end of the ribbon (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | reset vector
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(...) Since the Handyboard runs in "special test mode", the vectors are in the $BFxx page. Therefore, you'd want to use $BFFE:$BFFF. -- Randy ---...--- Randy Sargent Newton Research Labs Senior Design Engineer Robotic Systems and Software (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) It has been my experience that it is easier to change the drive circuitry than it is to change the motors. The circuitry is just solder and chips, the motors are mechanical tooling. Driving the Tamiya BullDozer from the HB is certainly (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | reset vector
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Hi, I am trying to run a basic assembled .asm file on the handy-board without IC. Since the board doesn't have a reset button, do I use the power on reset (turning board off/on) vector location of $FFFF:$FFFF to indicate the start of my code? -Luke (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | Polaroid Sonar
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Recently got my OEM kit from Polaroid Corp. In the readme file which i ftped from cherupakha.media.mit...trib/kent, it says "for robust operation solder a 0.01uF cap to C7 of the ranging board." I browsed through the schematic and component layout (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | Re: HELP!
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when using DLM, does the downloader make it to the second stage of the download, indicating "synchronized"? also, when attempting to download "config0c.s19," do you give DLM the command line flag indicating to burn EEPROM and not RAM? you must tell (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | Re[2]: expansion board
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Actually I wanted an analogue signal giving some idea of distance. I've done it with a 555 oscillator for illumination, and an opamp demodulator circuit. I was thinking that this might be useful on the expansion board. Richard ___...___ Reply (...) (28 years ago, 18-Feb-97, to lugnet.robotics.handyboard)
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| | Re: downloading
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(...) Did you run the strip_cr utility on the .S19 file to make the file's lines end correctly? * Michael L. Ross/C33 | Lockheed Martin Eng & Sci Svcs Co. **** * Robotics Department | 2400 Nasa Rd. 1, Houston, TX 77058***** * (281)333-7094; (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | HELP!
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I hope that someone reading this can please help me with a problem that I am finding difficult to solve. I have completed section 4.3 "Micropro and Oscilaator cct" and confirmed that the oscillator is running. However after section 4.4 "Serial line (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | problems downloading own .asm
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Look at the .s19 file, and see if it's downloading anything between 0 and FF. (You should be able to stare at your .s19 file and the pcode for a while and figure out the 4 hex bytes which contain the address for a line). Downloading something to the (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) What is 20? (...) Current meters have an internal resistance. The lower the current range the larger the resistance --- even with digital current meters. Some typical values For example: Digital Analogue Current Range R_meter R_meter 200 uA (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | downloading
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HI, I cannot get any .s19 file except for pcode_hb.s19 to download to the handy-board. This downloads and when I run IC it all works fine. The .s19 file I would like to download is just a normal .asm file assembled with as11.exe. I am just putting (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | Compiling (interactive) C programs
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Hi all, Some time ago I found a link somewhere on the handyboard page. This link referred to to someone who made a interactive C compiler for Unix environment. I would really like a compiler for the handyboard instead of the the C interpreter.(for (...) (28 years ago, 17-Feb-97, to lugnet.robotics.handyboard)
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| | DC Motors....
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Does anybody know where I might get replacement motors, more suitable to the B, for the Tamiya Bulldozer Kit??? HELP!! These motors are not suitable, but the tank unit is nice. The motors are stable, but draw to much current. Also, the speed of the (...) (28 years ago, 16-Feb-97, to lugnet.robotics.handyboard)
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| | downloading
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HI, I cannot get any .s19 file except for pcode_hb.s19 to download to the handy-board. This downloads and when I run IC it all works fine. The .s19 file I would like to download is just a normal .asm file assembled with as11.exe. I am just putting (...) (28 years ago, 16-Feb-97, to lugnet.robotics.handyboard)
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| | Re: MEMORY FAULT
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This problem is answered in the Handy Board FAQ. You are loading the wrong s19 file. -Fred -- This message was composed using Articulate Systems' PowerSecretary, a Macintosh-based speech-to-text dictation system. Please forgive any sloppiness in the (...) (28 years ago, 16-Feb-97, to lugnet.robotics.handyboard)
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| | program for handyboard
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I have started to assemble a handyboard and was wondering if there is a program that will allow the handyboard to simulate a walk through of a maze on my monitor or somthing similar of this type????? (28 years ago, 16-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board
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I too have used a similar technique. I used a 555 timer and a 567 tone decoder instead of a PIC. Using an IR can from Rat Shack, and five ir-LED's I get a sensor that sees straight ahead, 30 degrees and 60 degrees to each side. Set the 555 for about (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | IR LED's
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Hi Bill, Are you able to transmit IR beams through more than one LED (eventhough the handy board has only one LED driver port). If this is part of your IC code, could u please mail it to the net. Thanks Sriram (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | SPI Routines in IC
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|
Anybody have any routines or know of any published information for using the SPI with IC for: ...use with Dallas Semi's serial real time clock - DS1202 ...use with 12 Bit serial A/D - LT1298 ...use with Dallas semi's Thermomerter - DS1620 Thanks a (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) 3v toy motors are noisy little buggers and were never designed to be anywhere near a microprocessor. if you reduced the hb motor battery supply to 3v, you might have a chance. at 9v, i really doubt it. -f (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Motors, gear boxes, tools
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Greetings: on the Hanyboard web page, Tower Hobbies is mentioned as source for RC supplies etc. I would reccommend highly for electric motors, gear boxes, tools including a nice metal turning lathe, Hobby Lobby International www.hobby-lobby.com (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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To measure current with an multimeter or ammeter (volt/ohm/etc.. meter) you must break the circuit at some point and put the meter in series with the circuit thus gapping the break. ie) +-----(+) METER (-)------+ | | | | (+) | POWER | (-) | | | | | (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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Guys, I caught the mail on motors (3V etc.) and wasn't impressed. I just bought one of those Bulldozer Kits from Tamiya and I believe it contains 3V motors. Is there NO possible way of using these motors??? I did notice the HB motor driver chip (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board
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(...) I can vouch for this technique, this is basically what I do in my PIC program (except the randomness which is a nice touch BTW) and get rock solid detections. When the frequency is spot on to the center frequency (38Khz for the 1ISU60's) and (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| |
| | (no subject)
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Please unsubscribe me Matt Enser Director DLR Windows95 Lab email : menser@sbu.edu WEB: (URL) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Automatic feeding.
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(...) One way that I did this was to steal an idea from the railroad world. (...) In my case I put a conductor (a wire) around the outside of my two drive wheels. At the top of the wheels was a 'brush' (which was a simple spring loaded contact) and (...) (28 years ago, 15-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) EE Question: How do you use a multimeter to measure the current? I was told that you need a current probe to do this kind of thing. ?? (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Automatic feeding.
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(...) Here's an idea for you: For a mechanical system you could use two 'wiskers': one on top and one on the bottom of the 'bot. (Or one each side.) You set up the 'feeding pen' to be two parallel metal plates. Set them up so that the 'bot can roll (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) Unfortunately this is the LEAST amount of current the motor will draw when operating. You have measured the 'unloaded current'. Now, while you have your motor running, grab the shaft between your fingers and stop it, and measure that current. (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | LMD18200 Motor driver
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Is there a way to use the LMD18200 motor driver as a replacement for the motor chip on the handyboard? I know that they are not pin compatable but is there some type of interface that can be built easily? Thanks. Keith Keith Soldavin (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Automatic feeding.
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Has anyone worked up a system where a Hanyboard bot monitors it's battery level and then when it starts to get low it rolls over to a charging device and "plugs itself in"? It seems like this should be doable but I don't think I've seen any (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board
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I used the one available IR LED driver on the HB to drive a Radio Shack high-output IR LED. This, along with a Radio Shack IR decoder module (a little silver box about the size of a sugar cube that takes +5vdc and ground, and outputs a TTL level (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: Motors & handyboard
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(...) how did you take this measurement exactly? I think 75 mA might be kind of low, most motors will draw this much when they are just spinning but doing no useful work, but then draw much more when they are driving a geartrain. (...) actually, (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Motors & handyboard
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Yesterday I tried to run a motor out of the HB. First I tried how much current it needed with a multimeter and a 5V power source ... The result 75mA. When I tried to run the motor from the HB, after turning on the motor at low speed (motor (0,20);) (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | Re: expansion board
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(...) I've got a PIC chip programmed with IR collision-detection built into it (I'm trying to get some of the new 8 pin PICs to see if I can make an "all in one" unit. Basically the interface is two bits: bit 0 output - Turn on IR illumination (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | expansion board
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Fred, It seems to me that the first thing most people want to add to their robots that is not supported on the handyboard itself, is IR collission detection. How about including a modulator and driver for IR LED's, and a detector and demodulator (...) (28 years ago, 14-Feb-97, to lugnet.robotics.handyboard)
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| | 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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