 | | Re: Sonar and Compass
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(...) I have started working on an expansion board version of the compass code. I won't have it done before fall probably (unless is snows or something really bad). I am involved in another huge project right now. My thoughts are to have the compass (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Re: design alternatives: servo control and power source
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Hi Doug: I built a 12-servomotor walking robot using two SSCs - their interface with the HandyBoard is well documented, and ICB drivers are available on the webpage. I communicate with two SSCs (www.seetron.com) via one serial line connected to PA7 (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | design alternatives: servo control and power source
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Hello, I am planning to build a robot based on the Lynxmotion Hexapod II and Big Grip kits. There will be 12 servos for lego control, 2 servos for the manipulator, and 2 more for a camera pan/tilt unit. Everything appears fairly straightforward, (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Sonar and Compass
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Hi everybody! I've been running both the Polaroid sonar sensor and Vector 2x digital compass on the HB without the expansion board. I'm using Kent Farnsworth's older sonar driver code that is designed for the motor driver output ports (U11). The (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Re: design alternatives: servo control and power source
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(...) I don't have the Ferrettronics chip datasheet in front of me but some off the cuff calculations: 2400 bps/10 bits per byte=240 bytes per second each servo will require at least 2 bytes (servo # and position) 16 servos * 2 = 32 bytes for each (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Wireless communication with the Handyboard
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We just finished using the same comm. boards for our senior project, so maybe I can help a little. (...) One interesting phenomenon we noticed was that we received random noise at the receiver when the transmitter wasn't on. However, when the (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Wireless communication with the Handyboard
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(...) I was doing some work on wireless between two boards using the DVP board. Though, I can't answer directly your problem coz you are using a computer as your other transceiver. So mine was a little bit easy, but maybe you can get something from (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Wireless communication with the Handyboard
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Hello, I've been very busy trying to communicate with the Handyboard via a wireless link ( HP Development kit form Linx Technologies). I have run into a slight problem- The kit comes with 2 "development boards" - each contains a transmitter, (...) (25 years ago, 16-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Smooth PWM for IC3.2?
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You misunderstood my point, or maybe I was not clear enough. I know the smooth PWM algorithm are available for I3.2. What I require is all the source code that's running on my handy board to be available. It's not the case for IC3.2, so I'm not (...) (25 years ago, 15-Apr-99, to lugnet.robotics.handyboard)
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| | OT help needed
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I'm going away for ten days and I have lost the address to sign of this list. Would someone please send instructions to me directly? Thanks in advance, Bob Bailey (25 years ago, 15-Apr-99, to lugnet.robotics.handyboard)
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| | Beyond the jitters...
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Well my code does make constant calls to printf() and motor() (although with the original PWM code). I did notice the jitters more on the low end. now I've put aside the head rotation and sonar routines and will start on the encoders. I am (...) (25 years ago, 15-Apr-99, to lugnet.robotics.handyboard)
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| | Re: Smooth PWM for IC3.2?
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Eric/MSMKatz Newton Labs does offer smooth PWM routines for IC3.2. Check ftp://newtonlabs.com...mooth-pwm/ for details. I have used these with my handy board and expansion board (only simple test) and it worked fine. It does require some changes to (...) (25 years ago, 15-Apr-99, to lugnet.robotics.handyboard)
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| | Re: motor drivers
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might have better luck with www.wirz.com ---...--- | From: Naser A. Ameen <naa6195@silver.sdsmt.edu> | To: Chen Yung Hsu <hsu3@cooper.edu> | Cc: Handyboard@media.mit.edu | Subject: Re: motor drivers | Date: Wednesday, April 14, 1999 3:46 PM | | Try (...) (25 years ago, 15-Apr-99, to lugnet.robotics.handyboard)
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| | Re: how to
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The licensing info is at : (URL) you can do what you want with it, invluding selling it, as long as you keep the copyright info intact, and acknowledge Fred Martin and the MIT Media Lab as the creators. Keith Disclaimer: I'm not a lawyer and the (...) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: how to
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Gary, Write direct to Fred Martin. By the way there are three! We downunder at robot-Oz do distribute unassembled and assembled boards in the Australia/Oceania area using Patrick Hui's boards. We just haven't made it onto the Vendor page yet. Will (...) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: motor drivers
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-->Try Wriz electronics. I think their internet address is www.wriz.com Actually, it's Wirz Electronics (URL) you can check out (URL) this helps. --kam (URL) -->On Wed, 14 Apr 1999, Chen Yung Hsu wrote: --> -->> Hi! i'm looking for places that sell (...) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: how to
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Does anyone know what it takes to become an "official Handy Board distributor" of assembled boards? There are only two, and there ought to be three! Thanks, Gary Livick (URL) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: motor drivers
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Try Wriz electronics. I think their internet address is www.wriz.com (...) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: motor drivers
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Hi! i'm looking for places that sell DC motor drivers or H-bridges. if anyone knows of any please email me back. =) thanx chen (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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| | Re: More servo jitters...
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My HB is totally new, and I also have the "jitters". However, I have never Zap charged the unit. Although when we observed the jitters we were excessievly calling printf()... We more promenently noticed the jitters when running 2 9V motors (with (...) (25 years ago, 14-Apr-99, to lugnet.robotics.handyboard)
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