 | | Re: pressure sensors..
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JM, I don't have the book in front of me but Mobile Robots, From Inspiration to Implementation has some info on just this subject. If you don't have it or can't get access to it let me know and I'll do some research for ya. For example if its touch (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors... antistatic foam
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A viable option, depending on what sort of pressure is involved, is to put a thin piece of conductive (ie. antistatic) foam between two metal plates. The resistance between the plates ends up being roughly proportional to the pressure applied. It (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: running 2 IR
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(...) Can we not tie two IR LED's in parallel and plug into the IR port on the HB. ? (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: running 2 IR
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What you can do is just like the schematic for the built-in IR emitter circuit. You need to either software generate your wave or do it like the schematic. If software generated, this output would come from a output port on the HC11 to a transistor (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors..
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James, You can get Forse Sensing Resistors,and you can use strain gauages, but I find the easies thing is to make a bag or balloon of the shape you want, connect a tube to it, and use a small air pressure sensor. These are very cheap and readily (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors..
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(...) Hi James , What sort of Pressure sensor are you looking for ? air Pressure , Water ? let me Know , i work for Motorola Semiconductor we have a few avaliable let me Know via the list or return email Regards Bruce Given Montreal, Quebec, Canada (...) (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Sony IR
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Could someone tell me what the signal from a sony remote looks like (freq, period, etc and how it is read by the sony-ir program distributed with IC) Thanks!! Tom (27 years ago, 9-Apr-97, to lugnet.robotics.handyboard)
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| | Re: ??? Last minute sanity checking for a new board
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this is basically right, read the "appendixb" document listed on the tech docs page for this kind of info....... re: hb board size, it's sized so it will fit into a commercial plastic enclosure that holds an 8 cell AA battery pack. -fred (URL) your (...) (27 years ago, 8-Apr-97, to lugnet.robotics.handyboard)
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| | Re: pressure sensors..
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Try www.infusionsystems.com. Let me know if they are able to fill the need. Thanks. ---...--- Adam B. Cox check out my web page Computer Engineer (URL) Communications Corp. vmail: 416-241-7000 (x224) ---...--- (...) (27 years ago, 8-Apr-97, to lugnet.robotics.handyboard)
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| | ??? Last minute sanity checking for a new board
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+---...---+ | NOTICE! I'm posting from a host that is not always available. If your | | email to me bounces or you want to be sure, use 'brat@naxs.com'. THNKS | +---...---+ Fred (or anybody)- I'm doing some last minute sanity-checking on a project (...) (27 years ago, 8-Apr-97, to lugnet.robotics.handyboard)
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| | pressure sensors..
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hola all, I'm working on a project where I need to use a thin pressure sensor. Does anyone have any idea where I could look to find such a sensor. -james montgomery MIT '98 (27 years ago, 8-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Redfox racer photovore
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(...) m> Hi all m> I got it in my mind to build the M.I.T. photovore that is pictured m> on page 35 of "Mobile Robots". I have been able to track down the m> October 1988 issue of Omni magazine which contains the m> article/schematic on building the (...) (27 years ago, 8-Apr-97, to lugnet.robotics.handyboard)
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| | Flame Detection
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In a past e-mail, Yoni Garbourg (sorry Yoni, I couldn't find your email address) posted a message inquiring about flame detection. Adam Cox responded about finding sensors at www.infusionsystems.com. Yoni, what did you decide to use? I have had some (...) (27 years ago, 7-Apr-97, to lugnet.robotics.handyboard)
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| | nonrobot HB applications.
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I would be interested in seeing a list of applications that the HB is being used for other than small robots. thanks vic (27 years ago, 7-Apr-97, to lugnet.robotics.handyboard)
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| | Re: running 2 IR
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You mean IR "emitters"? (IR LED) If i understand you correctly, you wish to source current with the digital outputs. The digouts are from the HC11. There can't source enough current to light IR LED's. ---...--- ericson mar Master of Engineering (...) (27 years ago, 6-Apr-97, to lugnet.robotics.handyboard)
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| | running 2 IR
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I want to be able to run 2 or 3 IR xmitters from the single output on the HB with no additional hardware. Is there any problem with hooking two or 3 IR transmitters to the ground of the IR output and running the +5v from digital outputs. Then switch (...) (27 years ago, 6-Apr-97, to lugnet.robotics.handyboard)
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| | handy board as VU meter?
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I was just thinking the other day - could a handy board be made into a VU meter? (Digital readout on the LCD, or using the motor lights, etc.) Is it fast enough? If so, how could a line level audio signal be fed into one of the analog inputs? If (...) (27 years ago, 6-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Can the handyboard be taught to talk?
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My lab partner and I are going to make our robot talk using a voice recorder/player chip from www.isd.com. They are easy to use. Don't know if this fits your purpose. jm (...) (27 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Re: analog header
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Certainly the voltage follower will work. But I had a similar problem adjusting the sensitvity of a photocell that I solved by paralleling a pullup resistor of my own to get the proper impedance. You might try putting a 1 ohm (yep, thats one NOT 1k) (...) (27 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Can the handyboard be taught to talk?
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(...) Actually the SP0256 and the companion Text to Speech chip supported a 'serial' mode that was much easier to use (you could use the same software uart I just posted.) Don't get your hopes up however, the speech is crude to say the least. I used (...) (27 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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