 | | handyboard
|
|
hello, I am building a handyboard, but at the moment it doesn't work. what voltage does the motorala 6811 need? grtz laurens (28 years ago, 20-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: photocell arrangement
|
|
About photocells... I did this once and used some of the stuff that Rodney Brooks et al were working on with subsumption to build the ultimate "bug". It was a tiny cockroach type robot with a small FM wireless microphone strapped to its back. The (...) (28 years ago, 20-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: photocell arrangement
|
|
(...) It seems as if your unwanted light is mostly going to be coming from above your bot. It also seems that the tubing that you have around the photocells has made the light detection too directional. (Is that what you want?) With the two cells on (...) (28 years ago, 19-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | photocell arrangement
|
|
I'm experimenting with photocells, and I'm looking for some feedback from anyone who's got some insight or experience with this sort of thing. Essentially, I have two photocells, both facing forward, on the left and right side of my robot. I'd like (...) (28 years ago, 19-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: IR output
|
|
(...) 800 mA. Just don't short it out and you'll be fine. -Fred (28 years ago, 19-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | IR output
|
|
Can anyone tell me what the max current the IR output Darlington can handle? I need 100ma each for two high output IR emitters and I don't want to let the smoke out of the Darlington switch. Anyone? Thank you Larry ***...*** Larry Randall ***...*** (...) (28 years ago, 19-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | SPI newbie question
|
|
Forgive the newbie question, but I have an assembly program developed for the 6811 EVB that uses the SPI which I'm trying to rewrite in Interactive C for the Handyboard. However, I'm not sure if or how IC can access the SPI. I just need the SPI to (...) (28 years ago, 18-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
HELP (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Definitions of VM and Bytecodes used by Interactive C
|
|
(...) It seems like this might be a good thing to do - create a document of all of the pcode bytecodes. Another thing that might be usefull is a document describing the serial line protocal that IC uses. I have had need for both of these in the (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | docs for pcode
|
|
(...) If you're interested in learning what the various pcodes do, or in making a new development environment which backends to the pcodes, I'd recommend looking at "pcodesim.c" in the libs directory of the IC sources. This is a fairly (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Newtonlabs web site back up
|
|
The Newtonlabs web site (www.newtonlabs.com) is back up. Sorry for the inconvenience. -- Randy (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Definitions of VM and Bytecodes used by Interactive C
|
|
-- MIME ATTACHMENTS DISCARDED: 1. Content-Length: 0 (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Definitions of VM and Bytecodes used by Interactive C
|
|
(...) Unfortunately the IC system internals are not documented. I can only suggest that you look at the source code. the pcode.asm file is fairly well-commented, but that is all i can offer. -Fred (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | problem fixed
|
|
Once again, I've managed to fix my own problem, albeit a few hours later... :-) I figured out that gcc was accidentally calling cpp from Borland C++, instead of the one in the /bin directory. (Makes me wonder if Borland C++ is actually working, I'm (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | as11_ic with win95
|
|
Has anyone had any luck compiling asm files for IC under Win 95? When I try to run the ms-dos as11_ic.bat script in a MS-DOS window, gcc complains that: WINDPMI.386 is not properly installed. It needs to be installed to run Borland 32 bit DOS (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: download too big
|
|
(...) Randy, I'm running 2.81 on a 286 DOS machine, which has been banished to the garage workshop. My wife would growl at me if I tried to move this onto her new Pentium :-). What counts in that 16K, the original ascii code including comments, or (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | FW: new IC key
|
|
Are you planning any further updates to the software? (...) (28 years ago, 17-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | download too big
|
|
Hi Mike, (...) IC should catch a download that's too big. However, the download should never be larger than about 16K, so it sounds like you've probably found a bug. Which version of IC are you currently using? -- Randy (28 years ago, 16-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | How big an IC prog can HB hold?
|
|
Hi, The files I'm downloading to the HB seem to be getting too big (or else I have another problem). Total download is 18K, including comments and all. The download stops cold after loading all the files, and never loads interrupts. The code I (...) (28 years ago, 16-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | new IC key
|
|
Here's a new key for IC betas that expires July 15th: IC 3.1 Beta Test Copy 64900-18189-63759-49334-2 Our web site went down this morning, and we don't appear to be able to reach our service provider until Monday. Since the key expires soon, I (...) (28 years ago, 16-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Dirk, I don't know enough about the SPI to help, But I would like to know how it works out for you.. I am trying to learn s much about my Handy-Board as I can. I recently figured out the Addresses for the handy board, and I found that the Digital IO (...) (28 years ago, 16-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | asm code
|
|
Hi all, I am trying to have the handy board communicate with a miniboard. I found that using peeks and pokes at the SPI port takes about 500 cycles to do a single read char, so I tried writing the communication software in assembly. In this case, (...) (28 years ago, 15-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: hall effect
|
|
I've found the Hall Effect switches that All Electronics sells to be quite useful. Their part number is the HESW-2 and they are 75 cents each, or 10 for $6.50. (100 for $60.00). They are easily activated by the micro magnets that Radio Shack sells (...) (28 years ago, 15-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: hall effect
|
|
Hi Ya, I'm looking at the Digi-Key catalog (also availible at (URL) and they have several flavors of rotary encoders from $3.38 (24 pulses/360 degree mechanical encoder) to $41.20 (128 pulses/360 degree optical encoder) with the cheapest optical (...) (28 years ago, 15-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Definitions of VM and Bytecodes used by Interactive C
|
|
Does anyone know where I can get the definitions of the virtual machine and bytecodes used by Interactive C? I am thinking of creating a smalltalk-like language for the Handyboard. Any pointers you can provide will be greatly appreciated. Jun (...) (28 years ago, 15-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | pcode
|
|
Is the pcode_hb.asm available for veiwing? I don't seem to have it in my Unix files and whenever I try to view it on the Macintosh it crashes. Thanks, -Dirk (28 years ago, 14-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | expansion board
|
|
Hi all, I want to but the handyboard to control a walking robot. The walking robot needs 6 motors and these cannot be servos. I think about using stepper motors. But the handyboard is only capable of driving four. So do I need the expansion board as (...) (28 years ago, 14-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | sound files to tone(freq,time); sequences?
|
|
I'd love to use the Handyboard buzzer to repeat a short warning on my mobile robot. Has anyone developed a program which can convert a WIN95 sound file (e.g., .WAV), or ANY sound file, into the proper IC tone commands? I'm so lazy I haven't even (...) (28 years ago, 13-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: hall effect
|
|
There is a wiring diagram for a typical Hall Effect sensor included in the sensors/motors notes on the web site. -F (28 years ago, 11-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | hall effect
|
|
I'm trying to stick a shaft encoder on one of the wheels of my robot. In a search for the best way to do this, my current idea is to use a hall effect sensor, as has been recommended to me in the past. I've got a couple questions... First, where (...) (28 years ago, 11-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Encoder direction ?
|
|
I am just wondering how I can hook up my encoder, which has two outputs (one for pulses and the other one for direction), with the handy board so I can read the number of pulses and also the direction of rotation. Thanx in advance. Hachemi (28 years ago, 9-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
I have finished the H-Bridge, and to my great suprise, IT WORKS!! (party, dude!). I have drawn a schematic diagram for others who may wish to use this circuit. It is posted to cherupakha.media.mit...ze/hbridge with pics in both IFF and GIF format, (...) (28 years ago, 9-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Polaroid info
|
|
FYI: This info is copied out of the HB e-mail archive. There's lots of good stuff in there, it's pretty easy to search as plaintext. -Fred Polaroid 119 Windsor St, Cambridge, MA 02139 tel: 617.577.4681 fax: 617.577.3213 tel: 800.225.1000 ordering (...) (28 years ago, 8-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | polaroid range finders
|
|
Where can I purchase the polaroid range finders that are occasionally discussed on this list? Mark mbolding@vision.vsrc.uab.edu (28 years ago, 7-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | are you a graduating student?
|
|
If so, please me know if your e-mail address is about to be blown away. I've noted a surge in bad addresses on the list from the .edu sites. also, this is a reminder to all that the way to unsubscribe is to find your e-mail address by clicking the (...) (28 years ago, 7-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(...) all sensor inputs have a 47K pull-up resistor. If you remove this (by cutting the trace between the sensor input pin and the 47K resistor pack), then the analog inputs are pretty high impedence, like a meg or so. You should get the "M68HC11 (...) (28 years ago, 7-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Hi! Would you please let me know the input impedance of the AD circuit ? Thanks in advance. hajime (28 years ago, 7-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: your mail
|
|
Yes, the h-bridge circuit is very, very, very confusing. Hmm. Well it's in my robot right now, so lemme see if I can remember how it works. Ok, let's see. First, you connect both of the emitters of the PNP power transistors to +6V or whatever. (...) (28 years ago, 6-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
I'm having a little truoble with the H-Bridge described in this mailgroup. I have MOST of the circuit OK.. The power bridge itself, Diodes, etc.. I am also OK with the optocouplers to 2n2907s.. I am just a bit confused with the description if the (...) (28 years ago, 6-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Serial IO
|
|
Yesterday I experimented with the Serial IO code in the FAQ. I have a couple of questions though. Here is the basic program that I wrote to try to understand this stuff: I wrote this into hb_lib.c: void disable_pcode_serial() /* necessary to receive (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Question on analog()....
|
|
(...) Right; a voltage divider probably biases the microphone amp ckt at 2.5v. schematics are provided, no? -F (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re:Re: Question on analog()....
|
|
(...) Are you sure about this? On page 49 of my copy, it states pretty clearly that the input range is 0 to 5 v. ---...--- Just returned home. I checked the IC Manual of "The Mobile robot Assembly Guide" for the Rug Warrior. On p.66, it reads "When (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Question on analog(). Negative voltage
|
|
(...) DO NOT SEND NEGATIVE VOLTAGES INTO THE 6811, you will destroy the analog input circuit. Any voltage outside of the 0 to 5 v range is hazardous, unless it is current-limited to a few milliamps. (...) Are you sure about this? On page 49 of my (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Question on analog(). Negative voltage
|
|
Last time, I learned that the values of analog() corresponds to the voltage between 0 and 5. What if the signal to the analog port is a negative voltage. For example, -2 volt ? In that case, does that mean I have to use another formula or make some (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | encoders??
|
|
Let's see. First, I'd like to put a pair, if possible, of shaft encoders on my robot. (It's annoying not being able to tell how far I've gone!) Anyways, digital inputs 7 and 9 are being used by a 6500 Polaroid sensor and an RC servo. Is it still (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Strange question
|
|
Has anyone here used Electronic Workbench ? I've got a copy but it doesn't have schematics/models for the darlingtons (TIP120, 125, etc) I'm looking for spice models and ideally an symbol library. (yes it is for simulating various power control (...) (28 years ago, 5-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: voltage/current monitors
|
|
(...) Use a voltage divider (two resistors) to map the battery voltage to a 0 - 5v signal for the A/D converter. Depending on how much current your motors draw, you can put a .1 ohm precision resistor in series with the motor and measure the voltage (...) (28 years ago, 4-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | voltage/current monitors
|
|
I'm interested in building a voltage monitor circuit for my robot's 6V battery, and a current monitor circuit for the motors. Is there an easy way to do this, with reasonable accuracy? I'd like to interface both of them to the analog sensors on the (...) (28 years ago, 4-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Yup, it works.
|
|
The PWR light isn't really an indicator of power. It's actually hooked up to the 6811's serial transmit line, so it's supposed to flash when the 6811 is talking serial. the BATT light should always blink when the board is first switched on. It also (...) (28 years ago, 4-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Cris, I just built my HB last week, I can offer these comments.. The green power LED should flash while you are loading the board through the serial port. Actually, it's more of a flicker, it's just an indicator of serial activity. As far as the (...) (28 years ago, 4-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Yup, it works.
|
|
I didn't have any problems with the LED's - mine came with a short lead and that always went into the square pad. I imagine I missed the C15 and C16 errors (tantalum vs electrolytic) because I bought a kit and just took the parts out of the packages (...) (28 years ago, 4-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Success, sorta!
|
|
My long-sought goal of bringing in 2 RC signals to the IC3 and IC2 counters, and sending them out via OC3 and OC2 was not achieved. I was never able to get OC2 to work, and I suspect I need new Pcode like what Randy Sargent wrote to use the buzzer (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Adapting the LMD18200
|
|
Over the weekend I decided to use the LMD18200 H-Bridge devices for a larger robot I am building. What I did was simply remove the L293 chip and replace it with a 16pin header and some rainbow ribbon cable. Before you decide this is for you, here (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Yup, it works.
|
|
(...) I really tried hard to make this clear -- can you explain the difficulty you had? (...) Yup, you are right. You are either the first person to notice this, or the first to report it! (...) Quiescent RS-232 levels are -10v, so the minus voltage (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Yup, it works.
|
|
Well after much delay, I've finally got my first HandyBoard up and running. (I've got another one in parts, but that is a different story) I can confirm that HBDL.exe does *NOT* work on my 133Mhz Pentium under Windows '95. It does work on my 486/33 (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | motors
|
|
HI, Can anyone tell me where to get some good motors that are more powerfull than the LEGO 9V motor but can be implemented into the LEGO's? I want to use the LEGO kit with the suspension, front and rear wheel steering and drive, and 4 speed shifting (...) (28 years ago, 3-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Help debugging.
|
|
(...) No, mid-8's are fine. -F (28 years ago, 2-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Help debugging.
|
|
Okay - thanks - you were right - I mis-read the ground location and used pin 7 of the MAX232 instead of using pin 7 of J9. The chip is getting 5 volt range, but the negative voltages are in the mid-8 range - is this something to worry about? thanks (...) (28 years ago, 2-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Help debugging.
|
|
(...) which pin were you using as ground reference? Maybe redo your test using pin 15 of the Maxim as ground. First check the Maxim is getting good power and ground (pin 15 is ground, pin 16 is +5). Then re-check the voltages on pin 2 (should be +9 (...) (28 years ago, 2-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Help debugging.
|
|
Well, I didn't get far without running into a bug. In the interface/charger serial circuit, I get 17 volts at pin 2 and I get 0 volts on pin 6. The MAX232 chip is oriented to the right, and all the capacitors have their negative stripes on the left (...) (28 years ago, 2-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(...) There should be more than that in the archive -- here is what I get: 0 Aug 24 1994:50 1994 pcode-2.81-dist 0 Aug 24 1994:41 1994 pcode-2.81-dist/pcode 17563 Sep 29 1993:42 1993 pcode-2.81-dist/pcode/foo.s19 2209 Sep 29 1993:24 1993 (...) (28 years ago, 2-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Fred, I have FTP'ed pcode-2.81.dist.tar.Z from cher (thanks for getting it back!) within it were the files foo.s19, pcode_rw.s19, lobo.asm, pcode.asm, and some makefiles.. Cool, but the files required for compiling IC 2.81 that I can't find are (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(...) The FAQ is linked from the main HB web page under the title "the Handy Board FAQ", or directly at: (URL) pcode source is at ftp://cher.media.mit...dist.tar.Z and also (URL) should fix that last link, because you'd never find it unless you knew (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | cherupakha is up!
|
|
-Fred (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Greetings! (...) Stupid Question.. Where is this faq? Web or FTP? I also couldn't find the file pcode_2.81.tar you mentioned last week. I will be porting IC 3.1, but wouldn't mind doing 2.81 while waiting for the 3.1 source. (...) Yes, The HB nicad (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Relationship between voltage and analog()
|
|
(...) The input voltage range is 0 to 5 v, and the output number range is 0 to 255. The relationship is linear, so 2.5v = 128 (for example) (...) to convert from the output # to the voltage, it would be 5v x (output # / 255) so 47 is about 0.92 (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | Relationship between voltage and analog()
|
|
Hello! Would anybody please send me a mail letting me to know the relationship between the output of ananlog() function and the voltage ? For example, if my sensor works under the command "if (analog(0)>47) then ...." What would be the voltage ? Any (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(...) Yes, see the FAQ for a recently added section on the battery charging system. (...) Yes, this is a good idea if you are separately charging the HB's battery. As you correctly surmise, you don't want the two charging circuits contending with (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | cherupakha is down
|
|
FTPs to cherupakha are temporarily out. I'm working on it. -F (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Greetings! I have just built my first Handy-Board.. Works Great!! I can't decide if I will enjoy writing software or building expansions more, I guess I'll just have to do lots of both before I decide. Two questions. My 'bot has it's own 12 volt (...) (28 years ago, 1-Jun-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
(28 years ago, 30-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 15' max measurement
|
|
(...) I just noticed that the Polaroid Specs say that the transducer pulse current is 2 A. 100mA idle. Since it was mentioned previously that the HB's VR is rated for 1 Amp, how would this affect the sonar? Perhaps whatever is left of the 1A (...) (28 years ago, 28-May-96, to lugnet.robotics.handyboard)
|
| |
| | missing source files
|
|
Lyle, Make sure you get the pcode-2.81 tar file in the interactive-c directory on cherupakha. -Fred (...) (28 years ago, 28-May-96, to lugnet.robotics.handyboard)
|
| |
| | Interfacing PICs and Basic Stamps to Handy
|
|
Since (I think) it is fairly easy to interface the HC11's SPI interface to a PIC/Basic Stamp I & II this is probably easier than creating a custom RS-232 interface. Has anyone done anything like this? Sean R. Cunningham (28 years ago, 28-May-96, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
Greetings! I am currently porting ic version 2.860 to the Amiga. I have completed as11, dlm, and written a pre-processor in ANSI C for use with this. The problem I m now having is with ic (main) There are many files #included that did not come in (...) (28 years ago, 28-May-96, to lugnet.robotics.handyboard)
|
| |
| | Polaroid 6500
|
|
Hi, I am trying to install the polaroid 6500. I use the schematics I found with the sonar.c file at this site. It doesn't work, I dont understand the Motor power connection why does it have 4 pins ? One motor only uses 3 pins ? I think the sonar (...) (28 years ago, 26-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: pcode, libraries for two servos
|
|
(...) Randy, I'm having trouble making the TOC2 work with Pcode_hb, something trashes the output whether I disable IR-Xmit or not. Do I need a new Pcode in order to divert TOC2 to my own use? I'm treating OC2 the same as I treat OC3, but only OC3 (...) (28 years ago, 25-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Fuse on motor power cables
|
|
(...) All system power, incl. motor pwr, already runs through the existing polyswitch. They're not too fast, so I'm not sure if they'll save you. the motor chips do have over-current protection of their own, though it has been known to fail from (...) (28 years ago, 24-May-96, to lugnet.robotics.handyboard)
|
| |
| | Fuse on motor power cables
|
|
My current robot platform is a hacked toy and does not have ideal motors. I am concerned about toasting my motor driver chips. Can I put a polyswitch fuse in series in the motor lines to protect against this? They don't seem to be polarity (...) (28 years ago, 24-May-96, to lugnet.robotics.handyboard)
|
| |
| | expansion board
|
|
Hi all, I have not worked with the handy baord much yet but I also feel that it would be nice to have a few more digital i/o ports available. I guess that is short, sweet, and to the point. sherman@plains (28 years ago, 23-May-96, to lugnet.robotics.handyboard)
|
| |
| | Wish list, or expansion possibilities...
|
|
Hi, I am new to the handyboard area, having spent most of my project time with 68705 series uP's and 80X51's (done hate me.). Just tossing out some possibilities and not trying to down-play any other ideas that have preceeded me.... An expansion (...) (28 years ago, 23-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: PC serial connection
|
|
(...) COM 2 is used by the modem card. I don't even know tyhough how to make COM 2 point to the slot I want, which is my initial problem anyways ( I need a 25-pin slot for the serial connection). Sincerely, Yoni Garbourg << To succeed, Atificial (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
(...) You might want to note that the unexpanded HB is capable of driving a Polaroid sensor. The second motor chip is removed, and lines are plugged into different pins for the BINH and INIT signals, while the ECHO signal goes to the first digital (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
Another thought, how about a series of expander boards. I know this could get really ugly, but, maybe Fred, and the normal HB distributors build what they see are appropriate for their customers, and others build what is appropriate for their (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | PC serial connection
|
|
Hi. I just got my hands on a new HB and I'm using a 100 MHZ DX PC. Hardware-wise, there's a perfect slot for the serial connection on my computer, which is not occupied. I hookes the serial connection to it and tried to download IC using COM port 4 (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
(...) To Fred and others, I've been thinking about this off and on for over a year now, and since I now have parts I'll finally get my HBs into something more than just board status. Robots eat I/O pins for lunch. Sensors eat input pins and (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
Do you think Scott Edward would consider selling just the processor? The expansion board could be made to accept Scott's processor or an unprogrammed one if someone had a different application. Which processor does he use anyway? The other thing (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 6 servos and RS232...
|
|
(...) From memory of my designer engineer days, the EIA RS232 specification quotes something along the lines of: logical level RS-232 level zero or idle -3V to +15V one +3V to -15V The spec gave maximum slew rates for signals and such specifics such (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | RE: 6 servos
|
|
You can hook it directly to a PC serial port. Here is the note on it: 1.Controls eight hobby (R/C) servos. 2.Opto input takes RS-232, -422,-485, CMOS and TTL. 3.Baud rate configurable for 2400 or 9600. 4.Addressable up to 32 controllers on one port. (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 6 servos
|
|
(...) Just to make sure it wasn't a typo...so, the TTL level is "ative low"? Also. Does the Scott Edwards board have the ability to be connected to a computer? or do you need a "TTL to RS232 converter"? (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
(...) Build a 68360 in the expander board, that'll get ethernet, and multiple SCI ports. All the IO anyone should ever need. :-). (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | RE: Expansion interface status
|
|
While I welcome the small kits, they introduce interface issues for beginners, especially if there are multiple kits attached simultaneously - seems like this is a problem the expansion board should be solving rather than causing. The value I am (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | FW: 6 servos
|
|
RS232 is +12 and -12, but most serial ports can work correctly even if the signal is 3 to 5v. I regularly use 3 to 5v level serial signals. If you need to convert low voltage serial to RS232 specs, you can use a chip like Maxim's 232 - see (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 6 servos
|
|
(...) There are two types of serial voltages: TTL level and RS-232 level. The HB's serial interface board converts from TTL to RS-232 for communicating with the host computer. The Scott Edwards board accepts TTL levels, so an HB pin can drive it (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 6 servos
|
|
(...) Are the digital outputs at 5v high? I think you mentioned on the HB homepage about the serial interface converting RS232 levels at +12 and -12v to TTL levels (5v). I'm not that familiar with the nitty gritty of RS232 so this kinda puzzles me. (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: Expansion interface status
|
|
(...) Yes. The current status is "on hold" while I rethink the feature set. I'm considering doing something more like Scott Edward's little servo board for HB expansion: that is, a collection of small, physically detached boards. For servo's, I (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Expansion interface status
|
|
Does anyone know the current status of the expansion interface? My poor handy is at capacity for some i/o functions ;-( (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | FW: 6 servos
|
|
This would be a very powerful enhancement to the handy-board. It would obviously allow easy communication between the HC11 and PIC boards. Since my application will use 2+ PICs in addition to the Handyboard, it would allow easy networking of all 3 (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | Re: 6 servos
|
|
This multiple servos thing is reaching FAQ status, and here is how I plan to deal with it. Scott Edwards Electronics sells a cheap ($30 kit, $45 assembled) servo board that drives 8 servos. You can gang them to get 32 servos or even more. The boards (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
| |
| | 6 servos
|
|
Hi all, I want to build a six legged walking robot using the handyboard. I want to use 6 servo motors for that. I heard that the handyboard can only control 2 servos, but that there is a servo controller board which can control up to 32 servos, (...) (28 years ago, 22-May-96, to lugnet.robotics.handyboard)
|
