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1066  Topics / Science and Measurement / Re: Recommendations Needed on: July 28, 2012, 03:16:12 pm
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Who knows, he could be the person that invents the medical tricorder.
That's why I asked about the sharing of the prize. I can't remember where I saw it, but fairly recently a rather substantial prize was offered for anyone who could implement a device which could diagnose (some specified?) illnesses non-invasively like the Star Trek tricorder.

Pete
1067  Using Arduino / Audio / Re: MIDI Keyboard Encoder - Arduino Piano/Keyboard (question) on: July 28, 2012, 03:09:24 pm
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pre-programmed chip for 9 Euros (about 9 Dollars)! It was clear that he is trying to make a profit out of it! Those people totally piss me off!
There's nothing stopping you doing it and then sending pre-programmed chips for free to anyone who asks for one. That would really eat into his obscene profits.
Oh wait.
You can't.
You don't know how to do it.

Pete
1068  Topics / Science and Measurement / Re: Recommendations Needed on: July 28, 2012, 02:03:34 pm
My next question would be - are you going to share the prize with everyone who helps you make this thing?
And why didn't you post this in Project Guidance?

Pete
1069  Topics / Science and Measurement / Re: Recommendations Needed on: July 28, 2012, 09:40:53 am
Which algorithms are you going to use?

Pete
1070  Using Arduino / Installation & Troubleshooting / Re: Suddenly uploading does nothing (Leonardo, Linux) on: July 27, 2012, 06:59:53 pm
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(12V, via at least 2kOhm resistors to pins (used 3 input pins 2/3/4 and 2 output pins 7/8) and Vcc, while GND is directly connected)
I don't understand what you mean here. If you connected +12V to an Arduino digital pin thru a 2K ohm resistor then this has probably damaged the board.

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which is gettting extremely hot (ie burns the finger). Is this normal?
I doubt it very much.

Pete
1071  Using Arduino / Audio / Re: MIDI Library Reading Pitch Bend (Not Send) on: July 27, 2012, 12:36:26 pm
If you slowly return the wheel to its normal position does the program see it sending values?
How do you get the program to reset to the normal value (zero?) once it is high?

I think this is a software problem. Post your code.

Pete
1072  Using Arduino / Programming Questions / Re: Memory Leaks (SD and Strings) on: July 27, 2012, 10:20:52 am
Change your code so that it does not use the String library at all. There is a bug in the library.

Pete
1073  Using Arduino / Sensors / Re: Temperature changing with different power sources. on: July 27, 2012, 09:36:50 am
In the circuit diagram, why do you have a resistor going from Arduino ground to the ground rail on the breadboard?
If that is the only connection between the two grounds, it is wrong. It should be a wire.

Pete
1074  Using Arduino / Sensors / Re: Temperature changing with different power sources. on: July 26, 2012, 12:20:37 pm
Monitor the voltage on the 9V battery to see if it is dropping as the temperature rises.

Pete
1075  Using Arduino / Networking, Protocols, and Devices / Re: Arduino relationship with eeprom AT24c01 on: July 25, 2012, 07:24:10 pm
Don't crosspost.

Pete
1076  Using Arduino / Storage / Re: help me. Arduino with eeprom AT24c01 on: July 25, 2012, 07:21:45 pm
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the process of reading data at address 0x57 is data that appears in the address 0x50.
That's right, because changing the address of the chip does not change its size.
If you write 'A' into address 0 when the chip has address 0x50 and then read address 0 from the chip when it has address 0x57 you will get 'A'.
If you have more than one chip you can install them with addresses 0x50, 0x51, 0x52 and so on. Then if you write 'A' into chip 0x50 at address 0, that will not affect what is in address 0 in the chips at 0x51, 0x52 etc.

Pete
1077  Using Arduino / Project Guidance / Re: Keeping track of the Date and Time despite power loss on: July 24, 2012, 01:38:28 pm
Would a Chronodot be suitable?
http://macetech.com/store/index.php?main_page=product_info&cPath=5&products_id=8&zenid=8842c362d4426207f9b41188addabf62
I2C and +/- 2ppm accuracy.

Pete
1078  Using Arduino / Programming Questions / Re: GMT Time Conversion on: July 23, 2012, 04:05:56 pm
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GMT time conversion to Pacific time (UTC to PST [-19 Hrs])
GMT to PST is -8 hours. I'm in the CST zone which is GMT-6 so PST is two more hours behind that.

Pete
1079  Using Arduino / General Electronics / Re: M shaped waveform using Chebychef lowpass filter? on: July 19, 2012, 02:40:06 pm
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My goal is to generate a waveform that has a shape similar to an M rather than a sine wave.
Why? What is it going to do for you?

Pete
1080  Using Arduino / Programming Questions / Re: TimerOne Library: strange beahviours on: July 18, 2012, 06:24:39 pm
You can't use Serial.println in an interrupt routine.

Pete
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