 | | Re: sensors for tennis ball
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Hi all, Does anyone know how advanced is the lego mindstorms robotics kits? And how much programming can you do with them? thanks -Mike (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | RE: Handyboard Expansion Sonar Issues
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To anyone who can help: I too have contructed the HB expansion board. All i/o ports appear to work. The servo controllers appear to work well also. However, like Ranjit, I'm having Polaroid Sonar problems. I got this as a kit from Wirtz Electronics. (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Unsubscribe
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Thank's for the help !! Bye (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: NVRAM
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Dallas Semiconductor makes some static RAMs with an internal battery. One of them is the DA1230AB/Y, a 256kbit (32Kbyte) battery backed static RAM. (URL) - - - Nick - - - (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Memory erase or reset?
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Either disconnect the batteries and all sources of power or remove the memory chip.... -phil (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: R4 Resistor
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thank you! yes, 3.83k is correct. fred In your message you said: (...) ile (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Re: R4 Resistor
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"Fred G. Martin" schrieb: (...) i have had the same problem, so i havent installed the ir-circuit yet. the mistake is in "The Handy Board Technical Reference" (July 12, 1998) PDF File ... On page 46 ( i am not sure) is a Part Listing: it says : .... (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Setting the Config Register
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Greetings all! I just finished building the handyboard from a kit, and it seems to be working just fine except for the fact that I can't seem to get the config register to set to 0x0c. It is now working on the 0x0d setting, but I know this is (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: R4 Resistor
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where is this list that says 2.94K? please tell me so i can eradicate the incorrect value. to answer, yes, just use it, it affects the IR xmit frequency and nothing else. fred In your message you said: (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | NVRAM
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Hi! Here is Cesar Mello, from Brazil. I'd like to know if there is any NVRAM version of the 62256 chip, or any other solution smaller than the external batteries, or if it's possible to keep Interactive C and the user program loaded in an EPROM. (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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