 | | Bipolar Stepper Motors
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Hi, everyone. I was wondering if somebody could help me. I am trying to control a 2 phase bipolar stepper motor. I found a web page at : (URL) talks about controlling bipolar stepper motors. But I just can't seem to make it work. When I use the code (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: serial communications
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some days ago i played with this too. i send you my files ... hope it helps ;) /* beginning of serial.c */ int char1; void disable_pcode_serial() /* necessary to receive characters using serial_getchar */ { poke(0x3c, 1); } void (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | serial communications
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I want to disconnect interactive C from the handy board and send instructions to it via the hyper terminal on Windows 95. I have followed the instructions given in the HB technical reference. I am confused as to the procedure for accomplishing my (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Mindstorm hacking program
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I heard that someone at MIT created a program that can hack into and advance Lego mindstorm's computer. Does anyone know where i can find this site where i can download the program? =) chen (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | RE: Working with Legos
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Servo Tape: Available at R/C suppliers, this is sheet rubber with very strong stickum on both sides. The only problem is that it will creep, so if the part will be under stress you should augment servo tape with either Ty-Raps or a fillet of (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Wheel encoders
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(...) Yes, the pulley wheels near the drive wheels were drilled to accomodate 0.1" dia. disk magnets, available at the local hobby shop. The magnets activate the Hall effect magnetic sensors that are tucked away into the chassis (not easily seen in (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Polaroid sonar problems
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hi! Our group is still struggling with the polaroid sonar. We can't get any coherent reading, only readings that are in the range 470-515, which aren't effected by the measured distance. We have the capacitor and resistor installed as required. We (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | (no subject)
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(...) Some time ago I did come across a site that talked about hacking a sonar tape measure. I can't remember where I saw it but I am confident that I had encountered it by searching "sonar" on one of the major search engines. You could be more (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Mindstorm hacking program
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(...) You may want to start off by checking out: (URL) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | 9600 Baud Serial Input Drivers?
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Fred and Others, I got hold of your 9600 Baud Serial Output drivers - thank you very much. Is there anyone from this list who have done the same thing the taking in serial input data using the PORT A pins? And another questions, about serial (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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Thanks for posting the pics ... great casters! Are you using the pulleys with near the driven wheels to sense wheel rotation? - - - Nick - - - Will Bain wrote: <snip> (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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(...) No problem--here it is: (URL) pretty sketchy, but I hope it helps. -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ ' ` ~~~...~~~ ` ~~~...~~~ Wendy Parson, If you steal from one author, it's plagiarism; Will Bain, if you steal (...) (26 years ago, 1-Mar-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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The LEGO purists may not approve of this, but it does work well and it makes it relatively easy to use non-LEGO components. You *do* need to be cautious about what type of glue you use. Many glues will not adhere to the LEGO plastic, others will (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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I glued a couple of the thin Lego strips to the bottom of my HandyBoard to make it quick and easy to plop the board firmly onto a Lego base yet still have it easily removable. Doing this you must be certain to get the correct Lego spacing, so first (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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Some of the sensors that I've used easily attach to the the plates & hlocks with holes using a set of tiny nut, bolts, and washer(s). No damage done to any of the components, and easy to change your mind about where you're going to put it. -kr (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | I have made a i2c routine for the handy board
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Hello, You want to use the i2c bus (by the SPI connector) with your handy baord ? I have made a routine to use i2c component (PCF 8574, 8591.......) with the handy board. Do you want it ? See you later. Dperonne@aol.com (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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My only tip is to stay away from cyanoacrylics. I used superglue to try to attach a motor to a brick, and it started eating away the brick. Stuck like a champ, but I had red "puss" all over the place. (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Working with Legos
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(...) That's an excellent suggestion. Thanks, Max. There are many other tips on Lego robot construction techniques in an article titled The Art of Lego Design by Fred Martin. It's available for download from the Handy Board web site: (URL) have been (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | Working with Legos
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I have found a simple way to attach non-Lego motors to Lego components. I just use a band clamp as is used in plumbing to tighten the motor against two Lego axles. There is a picture and further details to show how this works at (URL) anyone else (...) (26 years ago, 28-Feb-99, to lugnet.robotics.handyboard)
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| | RE: Schematic, PCB freeware
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Thanks for the info guys, I found several good candidates among the suggestions. Clancy (...) (26 years ago, 27-Feb-99, to lugnet.robotics.handyboard)
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