 | | http://lcs.www.media.mit.edu/groups/el/projects/handy-board/maillist.htm
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i would like to use the list. thankyou, Jeff (29 years ago, 7-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Handyboard expansion status
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(...) I don't have one of the beta versions of the expansion board, but I've been building my own expansion boards and putting them on the HB. One thing that I've found is problematic with the HB design, in regards to expansion board design, is that (...) (29 years ago, 7-Apr-96, to lugnet.robotics.handyboard)
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| | Pcode instructions?
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OK. I know this is going to be a long shot, but here goes: Are there any docs on the pcode? I.e. is there some way that I can learn what I need to learn to modify the source code pcode.asm besides reading the file pcode.asm and tearing my hair out? (...) (29 years ago, 8-Apr-96, to lugnet.robotics.handyboard)
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| | more address lines on expansion board
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Hi Brian, When Fred and I designed the Rev 2.0 6.270 controller, we consciously made the expansion bus small and simple. For most expansion devices, the pre-decoded chip selects make more sense than sending all the address lines, since the latter (...) (29 years ago, 8-Apr-96, to lugnet.robotics.handyboard)
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| | HB design
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I got my handyboard on Saturday, and followed the assembly instructions that Fred did, and was thoughoughly impressed. Fred, you did great work, and have really done a great service to all of us. Thanks. (29 years ago, 8-Apr-96, to lugnet.robotics.handyboard)
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| | Sonar
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I don't have my Handy Board yet, but I do need some help in locating a Sonar Ranging Module. I have looked everywhere I can think of to no avail. Even emailed Polaroid and asked them. Twice. Still have no response from them. Where do I get a (...) (29 years ago, 8-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Sonar
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(617)386-3965 OEM Components Group 3 kits: $299, $165, $99 You're probably interested in th $99 one wich has 2 Rangers and 2 Transducers. (...) (29 years ago, 8-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Sonar
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Speaking of Polaroid ultrasonic sensors, does anyone know if there's a product out there that can multiplex a few of the sensors? Thanks. (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | RE: Sonar
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The Robotics Practitioner (trp@footfalls.com has part 1 of an article about this in the Fall, 1995 edition by Bavid Musliner (musliner@src.honeywell.com) and Rick Moll (rick@footfalls.com). Part one is concepts; part 2 will present detailed design. (...) (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | Emitting 40khz IR
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How do I send out 40khz IR on the handyboard IR port so that I can use a Sharp IR detector for proximity sensing? I would need a signal that wasn't modulated at 100 or 125 hz, right? Just a straight 40khz signal. Any help would be appreciated. -John (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Sonar
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Yeah! This would help alot! Who is trp@footfalls.com? Is this person someone who posted the article once in handyboard mailing list? (...) (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | RE: Sonar
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The Robotics Practitioner is a magazine about robotics targeted more for students and hobbyists than many of the professional Journals. Their email address is: trp@footfalls.com. Other two email addresses in the previous messge are the articlel's (...) (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | Polaroid Sonar Bulk Buy
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Hello Everyone, As you may or may not know I am hosting a Bulk Buy for the Polaroid 6500 Sonar Ranging Modules and matching Transducers. The deadline for orders to be in by regular mail is coming up quick, Friday, April 19, 1996. If you are (...) (29 years ago, 9-Apr-96, to lugnet.robotics.handyboard)
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| | fuse on handyboard
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I'm curious - what is the maximum current the Polyswitch fuse on the handyboard will allow to pass through it? I'm designing an H-bridge circuit to allow me to drive a heftier base with the handyboard, and I'm trying to figure out if I can still (...) (29 years ago, 10-Apr-96, to lugnet.robotics.handyboard)
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| | Re: Emitting 40khz IR
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poke(0x1000,0x40); will turn the IR on at 40KHZ and poke(0x1000,0x0); will turn it off. (...) Dr. M. K. Ramasubramanian Assistant Professor Department of Mechanical and Aerospace Engineering North Carolina State University Box 7910 Raleigh, NC (...) (29 years ago, 10-Apr-96, to lugnet.robotics.handyboard)
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| | ???
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Would anyone think of selling me an ASSEMBLED and used Handy Board for cheap. I have very limited funds and would appreciate any price reduction. Thank you. You can E-mail back on the mailing list or to Babylon007@aol.com. (29 years ago, 10-Apr-96, to lugnet.robotics.handyboard)
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| | Nuggets
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While trying to unload some IS1U60 IR receivers, I found the sharp data site. It turns out that the IS1U60 has a center freq of 38 khz, while 40khz is is well within its pickup range, I wonder if changeing the circuit on the HB to 38khz would (...) (29 years ago, 10-Apr-96, to lugnet.robotics.handyboard)
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| | TCNT register !
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I want to know if the time we get from timer (TCNT) is in second or milisecond. I was trying to run the handyboard for my first time, and I am confusing about the power supply, I don't know if the power supply should be plugged in the handy board (...) (29 years ago, 11-Apr-96, to lugnet.robotics.handyboard)
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| | RE:TCNT reg
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(...) The battery goes to the (+) (-) spots, and the charger plugs into either the Handy Board itself (near the frob knob) or on the serial/battery board. The system time, while running IC (which is what I assume you're going to do) is in (...) (29 years ago, 11-Apr-96, to lugnet.robotics.handyboard)
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| | 4 line LCDs and other LCD questions
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Dear HB suppliers: Can anybody sell us bigger LCDs for the HandyBoard? I need at least 4 line LCD or other similar type. It will be used in complete darkness, so it should be illuminated. Thanks. Alexander A. Chaihorsky President, ULTRA-RES Corp. (...) (29 years ago, 11-Apr-96, to lugnet.robotics.handyboard)
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