 | | Re: voltage regulator current rating
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(...) Is there any current going directly into GND from the LM2931Z-5.0? If so, would this cause any "extra" heat other than from the current the HB draws? -Eric (28 years ago, 16-May-96, to lugnet.robotics.handyboard)
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| | SPI Bus problem solved!!!!!!
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Hi-dee ho, I'm happy to report that I've successfully gotten a Handyboard to communicate to a Miniboard via the Synchronous Serial bus (SPI). The secret was (as I alluded to in my last post on the subject) setting the DDRD (Data direction for port (...) (28 years ago, 16-May-96, to lugnet.robotics.handyboard)
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| | Available J sockets on Hboard?
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Are there any unused sockets on the Handyboard? For example, the bottom 2 sockets in J6 look to be unused, and I could use a couple of sockets to bring out some signals. Now that the thing is assembled, it's difficult to follow traces on the top (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Thanks for all the replys on the L293D
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Thank you Best regards Jakob Lunderg (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Re: Downloading without AC adapter
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(...) Yes. The interface will draw power from the HB's battery. Don't leave the HB plugged into the interface w/o the adapter for extended periods, because the interface will drain the HB's battery even if the HB is switched off. -Fred (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Re: Error Messages
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(...) What version of IC are you running? Are you by chance running the old DOS version 2.86x under Windows? -- Randy (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Should I?
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Hi all, I am a young Dutch engineer assigned to build a prototype of a six-legged robot. I am considering to use the handy-board as the controller. There are however a few questions I have. First of all, is it possible to control six motors with the (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Downloading without AC adapter
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Is it possible to download pcode and programs to the HB with having the AC adapter plugged in? -John (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Where can i buy L293D in Scandinavia
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I have the problem to locate a suplayer of the L293D needed for the motor output circuit. Can anyone tell me who i manufacturing the L293D. is there any alternate suplyer and which manufacturer is that. Jakob Lundberg mail: jakob.lundberg@atc.mil.se (...) (28 years ago, 15-May-96, to lugnet.robotics.handyboard)
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| | Error Messages
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Hi to all, Why do I get the following error messages when I load my files to the Handy-board? Thank you in advance. Armen Initializing interrupts Downloading 1840 bytes (addresses 8000-872F): 1840 loaded Downloading 78 bytes (addresses 8730-877D): (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| | Re: 15' max measurement
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(...) I beleive "hard" rigid materials have high reflectivity of sound, such as metal and granite, etc. Pourous materials absorb sound, like brick and wood. You may have notised that sound absorbtions usually involve foam pads on the walls and (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| | Re: 15' max measurement
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(...) I believe it would matter what type of material you reflect the pulse off of, I would guess. Different surfaces have differenc acoustical properties. Just like they have those silent rooms and echo chambers, etc. (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| | 15' max measurement
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Yup, it looks like 15' is about as far as I can measure. In fact, if the distance is _too_ great, I start getting weird measurements, on the order of 8 or 9 feet. Strange. I turned the gain up a bit, which keeps those erratic measurements from (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| | sonar module
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Well, I finally got my Polaroid sonar module in the mail, and I got it working with my Handy Board tonight. My feelings thus far: This thing is pretty neat. However (of course), there are a few quirks that I'm trying to figure out. Distance (...) (28 years ago, 14-May-96, to lugnet.robotics.handyboard)
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| | Continuation of the quest to understand the SPI port
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Hi, Under Interactive C, something is resetting bits 6 and 4 of the SPCR register (0x1028). Whenever we try poke(0x1028,0x5C); and then do a peek(0x1028), we always get back 0x0C!!! Trying to figure out whether this was an instantaneous thing or (...) (28 years ago, 12-May-96, to lugnet.robotics.handyboard)
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| | Menu.c converted for HB
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Just to make my tiny contribution to the Handy Board community, I decided to convert the menu.c file for the 6.270 board for use on the Handy Board. It is available in the ic_contrib/jkeyzer directory on cher, for anyone who wants to check it out. (...) (28 years ago, 11-May-96, to lugnet.robotics.handyboard)
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| | Re: Summary Re: Ordering from 6270 Technologies
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by the way What is 6270 Technologies email address? I've lost my reference to it. cheers ray (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| | Summary Re: Ordering from 6270 Technologies
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The 6.270 2.21 board set was gratuitously received on May 8th; although the original email query was sent out 11/28/95 and the check sent out on 12/5/95. The general responses that I received from people responding back is similar to the (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| | infos
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I'm a newbe in this list, not having already built my first HB (but my PCBs are on the way...) and I've some questions: - I think to try to use also ASM on the Handy ... will it be possible? and if so, as i think, where can I get infos on, by (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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| | A Project In Planning
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Hi Ya, I am a team member of a team that is planning to build a robotic platform for a research project. What we want to do is build a platform with a Handy Board and a PC on it. The HB will deal with the drive motors (through and interface card to (...) (28 years ago, 10-May-96, to lugnet.robotics.handyboard)
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