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Type: Posts; User: K de Jong

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    The interesting thing about this demo is that it...

    The interesting thing about this demo is that it looks so easy and makes sense if you play with it.

    But behind the scenes there is more...... :-)).

    The system shuts off the main light at 2 AM...
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    Netburner PINK module

    Did anybody use the Netburner PINK serial to ethernet module?

    I use both the plain Netburner module and the PINK module, which is far more easy to use.

    But how can I upload a file to the PINK...
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    Hi, I see a resitor of 10k across the...

    Hi,

    I see a resitor of 10k across the resonator, to my feeling that resistor may be a bit larger 1M, or so.

    Regards,

    Klaus
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    Hi Jon Millard, Do you use real time in your...

    Hi Jon Millard,

    Do you use real time in your system as well? Real time clocks like the DS1302/1307 have some free RAM onboard which can be made 'Non Volatile' using a backup battery or capacitor....
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    You can use polling. That is the PC-side EB500...

    You can use polling.

    That is the PC-side EB500 calls the remote EB500 with its MAC-address. The remote 'sees' the call on its connection status pin 8 going high. The remote can then make pin 9,...
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    No, the Pentium was needed for the pattern...

    No, the Pentium was needed for the pattern recognition part of the job. Your calculations will probably fit into a Stamp. If not you can look at Tracy Allans website, he has routines to calculate...
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    Hi Patrick, Can you use potmeters on the elbow...

    Hi Patrick,

    Can you use potmeters on the elbow to measure the angles? You can read a potmeter easily with a Stamp using RC-time and if you use a clever construction they may give you the XYZ.

    I...
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    Hi Jose, Some AC motors allso run on DC,...

    Hi Jose,

    Some AC motors allso run on DC, especially if they have two brushes inside. Did you try that ??

    Why not ?

    Klaus
  9. Hi, Can't you just use a resistor from the 12...

    Hi,

    Can't you just use a resistor from the 12 Volts to the 9 Volt battery ???? R-330 Ohm would give you about 10 mA charge current.

    Regards,

    Klaus
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    Hi The Dead Bug and Jim, I'm reinventing...

    Hi The Dead Bug and Jim,

    I'm reinventing wheels all the time and they allways turn out to be more expensive than what I can buy, most problems have been solved before, you know. But it's big fun...
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    Hi Jim, You could start with an IR-Buddy (sold...

    Hi Jim,

    You could start with an IR-Buddy (sold by Parallax) to test your idea on the widely used Philips RC5 code. When you have that working you can try to go to more exotic IR-codes.

    The...
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    Hi glitch, Yes, it is best to use a resistor...

    Hi glitch,

    Yes, it is best to use a resistor on your input pin, but about 1 kOhm will work better than the 100k you have now.

    Klaus
  13. Thread: Serial LCD

    by K de Jong
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    2,257

    fzeitgeist The PCF8583 also has about 200...

    fzeitgeist

    The PCF8583 also has about 200 Bytes of spare RAM inside that you could use. If you put a little battery (3V Lithium) or a large capacitor (0.1 to 1 Farad...
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    Hi Jose, If your pull down resistor is 10 k...

    Hi Jose,

    If your pull down resistor is 10 k you can drive the input pin high from VDD, pin 21 on the Stamp. Pin 21 can deliver about 50 mA max from the internal regulator on the Stamp.

    Regards,...
  15. Thread: Vin and Vdd

    by K de Jong
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    818

    Hi Sid, Interesting, on my BS2p demo Board pin...

    Hi Sid,

    Interesting, on my BS2p demo Board pin 21 (VDD) apears to be connectod to the 5 Volt output of the external regulator. Pin 24 is not connected to anything, as far as I can measure.

    To...
  16. Thread: Vin and Vdd

    by K de Jong
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    818

    Hi Sid, If I look at the piggy back I have...

    Hi Sid,

    If I look at the piggy back I have here it actually has an extra header on top. So it can be done with the one I have here. That is what I had in mind yesterday.

    My projects are...
  17. Thread: Vin and Vdd

    by K de Jong
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    818

    Hi Sid, If you are concerned about building...

    Hi Sid,

    If you are concerned about building you Piggyback modules you could leave pin 24 unconnected at the top level, that is where your Stamp is. This way your other applications can get their...
  18. Thread: Bs2p24

    by K de Jong
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    718

    Hi Sid, There are some production related...

    Hi Sid,

    There are some production related voltage differences between regulators.

    If it is the case the the small Stamp regulator has a little higher output voltage than the external then the...
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    Hi FKlaas, Did you put in the underscores in...

    Hi FKlaas,

    Did you put in the underscores in the codefragment below ??

    TAC_ON CON 60 'time from A off TO C ON
    TCC_OFF CON 80 'time from C ON TO C off

    If you did not you will get the...
  20. Thread: At45db011b

    by K de Jong
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    You'r right achilles03, This chip feeds a...

    You'r right achilles03,

    This chip feeds a whole page of 264 bytes into memory from a RAM buffer. But you can fill the RAM buffer byte by byte, if you want.

    That way you can read in bytes to the...
  21. Thread: bluetooth

    by K de Jong
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    Hi Prisco, Looking at the website and the...

    Hi Prisco,

    Looking at the website and the datasheet I would say: maybe it can be done but you may need a level shifter (ie MAX 232).

    But you will have to try it to know for sure. If they are...
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    Hi, The world of programming is very large....

    Hi,

    The world of programming is very large. So, the best way is to start off doing simple steps.

    Ie. the first step may be to construct a little system that lets a LED blink. Then experiment...
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    Hi Porter, Are you using pull up resistors...

    Hi Porter,

    Are you using pull up resistors (4k7) on SCL and SDA?

    The I2C bus will do nothing without them.

    Success,

    Klaus
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    Look at clock chips. Some have spare volatile RAM...

    Look at clock chips. Some have spare volatile RAM which will be non-volatile if you prvide a backup battery or capacitor.

    DS1302 has 31 bytes RAM free.
    PCF8583 (I2C-bus) has over 200 bytes.
    ...
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    Hi, Here is some code for you I found in my...

    Hi,

    Here is some code for you I found in my archives. I have not used it myself but if you look at the author it must be good :-).

    Klaus
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