 | | Re: motor power problems
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in short, the answer is: "you can't use 3 to 4v motors with the Handy Board." basically, these motors are cheap toy motors that are incredibly noisy from an electrical standpoint, plus they want to draw far more current than the Handy Board's motor (...) (26 years ago, 25-Jul-98, to lugnet.robotics.handyboard)
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| | motor power problems
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Hi, everyone. I recently bought a preassembled handyboard from the Robot Store in Hong Kong, and I'm having trouble with motor power. My robot frame has two motors that can run at 3-4.5V. I was planning to use 5AA Nicads as a power supply for the (...) (26 years ago, 25-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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Fred, I decided not to use the external battery for now and try and get the sonar working using the directions on the web page. Instead of connecting the power throught the Motor Power header, I have simple connect V+ and GND to TIC3's PWR and Grnd (...) (26 years ago, 24-Jul-98, to lugnet.robotics.handyboard)
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| | Re: What about Fischertechnik?
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REF: Fischertechnik as building components for robots Greetings, We considered using Fischertechnik for building our robots but unfortunately, they occupy more or less the same volume as LEGO parts and our robots had to be small (first within a 12 (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | Config register 0x3c trauma
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You all may recall my problems downloading to my board and receiving a "config register set to 0x3c" error. I am glad to report there was a very simple solution, but it was a nightmare to debug. So allow me to share my wisdom so other unfortunate (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | PID filter source code
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Hello all, Is there anyone hwo has information about motion control, and specially about writing a PID filter for the HC11. I want to control a 3-axis machine. The 3 engines all have encoders and i want to write a PID filter where i can control the (...) (26 years ago, 23-Jul-98, to lugnet.robotics.handyboard)
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| | What about Fischertechnik?
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I assume the Handy Board (HB) can be used with Fischertechnik products and parts. Is this correct? I just ran across Fischertechnik and was wondering if you all have any comments (preferably based on experience) about how this line of products (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Recharging a Battery
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(...) That's a Gel Cell I assume (that's what I call them anyway). Depending on how you use your battery, you can charge it one of two ways (listed on the chart on your battery). I choose to charge my Gel Cells (I have a bunch of different types) (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Recharging a Battery
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I have a 'sealed rechargeable' Lead-Acid battery. It's specs are 12 volts at 2.0 Ah. It also has a nifty chart on the outside saying: | Charging @ 20 Deg. C | Voltage Regulation | Initial Current | | Standby Use | 13.50-13.80V | No Limit | | Cyclic (...) (26 years ago, 22-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Memory usage
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This question how has an answer in the FAQ. Please see: (URL) is the answer now on the FAQ page. Fred How much of the Handy Board's 32K memory is available for user programs running under Interactive C? Here is an approximate breakdown of how (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Memory usage
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I don't have a handy board but am considering getting one. I like what I have seen so far! I have searched the FAQ and the mail list archives but can't find the answer to my question. How much of the 32k does Interactive C take up? OR MORE TO THE (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Need Help to solve the algorithm.
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The paper referred to is at ftp://cherupakha.med...Martin.pdf My personal advise is that you simply *get started*. hook up your motors and start driving your robot around. see what it can do, how it moves. then connect sensors and gain an intuition (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | RE: Need Help to solve the algorithm.
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Are you asking for how to do the ded reckoning from counting steps, or how to get the sonar to measure your location relative to nearby walls? Mike Ross ---...--- From: phillip chia[SMTP:philchia@s...et.com.sg] Sent: Monday, July 20, 1998 3:38 AM (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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I have tried the official Handy Board Sonar hookup from the Web sie and didn't get very good results. Most of the time, the sonar would produce seemingly random numbers (including negatives). Every once in a while, it would give a constant value of (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Sonar Help!
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In your message you said: (...) what kind of ext batt are you using? are the diodes in series with that? what voltage do you have on the sonar when it's in operation? are the sonar's ground and the HB's ground connected? fred (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Need Help to solve the algorithm.
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May I suggest that you get a copy of a paper that Fred Martin wrote (should be on his website, that is where I got it). It talks about the experience of several of his students and their approaches and pitfalls is designing a robot not too (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | Re: LCD routines
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Hello, I have developed a machine code programming system for programming the handyboard. It is similar to the Buffalo routines on the Motorolla 68HC11 chips. It allows a relatively simple way of machine code interaction to the display. The program (...) (26 years ago, 21-Jul-98, to lugnet.robotics.handyboard)
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| | LCD routines
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I would like to be able to use the LCD screen on the handy board while using just straight assembly programs. Is there anyone that has some example code, or know where I can look for explanations of how to do this. Thanks, Joe Hoffmann E-Mail (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Sonar Help!
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Hi, I am having problems getting my Polaroid sonar to work properly. Following Kent Farnsworth's directions, I have hooked up the sonar: Sonar ====> Handy Board ECHO TIC3 (Top position) V+ TIC3 (Middle) GND TIC3 (Bottom) INIT PIN 9 of 2nd L293DNE (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | re: paralell port
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Somebody request some info about paralllel port look in thisd site for an example writing in C (URL) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Need Help to solve the algorithm.
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Hello, I really need help to solve the alogrithm in using the HD with interactive C program . Presently. I'm constructing a mobile robot to move within a battle field of 5metres by 5metres. In side the battle filed, the "mines" are visible with (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Another HandyBoard for sale
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Hi all, I also have a Handyboard for sale, but with a 20x4 display and the IR demodulator. No casing, however. Price is just slightly more at $235, includes shipping. It has a A0 processor. I'm selling it because it's a bit "overpowered" for my (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | Comm problems
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Hi all, I am currently having problems getting my HB to talk with my computer. I am using IC 3.2. Because of time and work pressures I have not been able to play witht my bot for a couple of months. Everything worked fine then. I didn't change (...) (26 years ago, 20-Jul-98, to lugnet.robotics.handyboard)
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| | (Fwd) Extra HB For Sale
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Oops! I had my date set incorrect, on my PC. This was sent out on July 19th not June 10th. ------- Forwarded Message Follows ------- From: "Mike Davis" <ipscone@halcyon.com> To: handyboard@media.mit.edu Date sent: Wed, 10 Jun 1998 08:41:19 -0700 (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | Parellel port control
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Has anybody tried using the "delay function, outportb function and inportb function" that comes with Borland C++ 5.01. I am trying to control a set of LEDs conncted to my printer port using a C++ program. My program woudn't compile. The error is (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | RE: SPI problems
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Serial libraries are wwriten for Serial port,not for SPI port! Are you needing use the spi like a standard oitput port or like a SPI (synchronus serial port)???? Is the device spi compatiible? If yes, you need the portd to work like a SPI port. if (...) (26 years ago, 19-Jul-98, to lugnet.robotics.handyboard)
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| | beta testers wanted for LEGO MindStorms
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Hi all, LEGO is officially looking for beta testers for their new MindStorms product scheduled to ship this fall. I'm not sure what their selection criteria are, other than that you must live in the States and have Pentium running Windows 95. It's a (...) (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | I'm Sorry!
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Sorry that my last message was sent in HTML format. Hopefully, it will not happen again Phil Hahn (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | Re: LM20X21A
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(...) Erm... I am just guessing here, but, I don't think it would be unreasonable to suspect that this particular LCD uses the Hitachi LCD chipset that just about every LCD manufacturer utilizes.. and every LCD chip fab'r emulates. HM44780 is it? (...) (26 years ago, 18-Jul-98, to lugnet.robotics.handyboard)
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| | HB Stress Ability
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Hello! Does anyone know how much stress can be put on a HB?? I'm into rocketry and thought about putting it in my rocket that I'm building. I was wondering: Will it work while flying in the air with the increaced G-force and high speeds? Thanks! (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Handy Board Keeps crashing
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I keep getting errors that there is extra bytes on the stack. I reset the board a couple of times and that does not help. I appreciate any help. Faris (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Config register 0x3c
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As no one has any insight into why I'm getting a config register value of 0x3c when downloading pcode, I am into speculation mode. To refresh people's memory: All of DL, DLM, and HBDL refuse to download the pcode to my chip, and HBDL reports that my (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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That's the way I thought it had to be done. What I was considering was routines that moved each leg the same short distance (for straight line walking). Walking would consist of very short increments of movement. Now, this seems like it would move (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Gleason Reserch
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Do you know what is going on with Gleason Research ??. Thay are not responding the e-mail !! Ricardo Barrenechea rbarre@cis.com.ar (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | RE: Simultaneous Control of Multiple Servos
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I have included site addresses that I have found useful. (URL) Maker of the Hexapod robot using a buffer of sorts (D-type latches) for simultaneous control. Definitely worth a look, he's put a lot of information into this site. (URL) Creator of (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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I would suggest that just getting a walking robot to walk with coodination and then being able to turn in place and in an arc will be challenging enough to begin with. Just adding enough intelligence to adapt to rough terrain and the change gaits (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Simultaneous Control of Multiple Servos
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You are correct to assume that all legs should be in sync with each other and that all the legs on the ground should be moving at the same rate in the same direction to move straight (sometimes you don't want to move straight!). BUT now think of the (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | Simultaneous Control of Multiple Servos
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I have asked this before and not received much regarding this question. So, here goes again. In building a walking robot, how important is it to control the motion of all legs simultaneously? Seems like that pulsing one at a time creates the (...) (26 years ago, 17-Jul-98, to lugnet.robotics.handyboard)
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| | SPI problems
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I am trying to connect my Handyboard with a Motorola 68HC11A1FN chip inside with a AD7858L- 12-bit ADC. In my IC code I first write to the DDRD (Port D Data Direction Register) ($1009) and activate SCK(bit4), MOSI(bit3), MISO(bit2). Then I write to (...) (26 years ago, 16-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Handyboard/RWP without p-code
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Hi I suggest that you contact ImageCraft. (URL) or info@imagecraft.com They have a C compiler for 68HC11 CPU's that will do what you want, including a library for the HandyBoard (see attached e-mail) ! I have no affiliation with ImageCraft (other (...) (26 years ago, 16-Jul-98, to lugnet.robotics.handyboard)
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