http://www.instructables.com Member Feed Sat, 25 May 2013 22:06:18 PDT BLOX v1.01 http://www.instructables.com/answers/Why-does-the-SPI-library-not-work-on-an-Attiny/ /files/deriv/F2U/6MHK/HD4VPY1U/F2U6MHKHD4VPY1U.SQUARE2.jpg /files/deriv/F2U/6MHK/HD4VPY1U/F2U6MHKHD4VPY1U.SQUARE.jpg /files/deriv/F2U/6MHK/HD4VPY1U/F2U6MHKHD4VPY1U.SMALL.jpg Q7J6L16HD4VPY1R hydronics Why does the SPI library not work on an Attiny?.. I found some code on gethub to get around this but... Can anyone point me to a good reference (guide, reference book, etc) for programming that might answer these strange truths that I am oblivious to. My background is Mechanical Engineering and Ardu...
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Continue Reading »]]> technology Wed, 13 Feb 2013 17:59:18 PST http://www.instructables.com/answers/Address-LEDs-on-a-LOL-shield-help-please/ /files/deriv/FB9/9KR0/HAVGJL12/FB99KR0HAVGJL12.SQUARE2.jpg /files/deriv/FB9/9KR0/HAVGJL12/FB99KR0HAVGJL12.SQUARE.jpg /files/deriv/FB9/9KR0/HAVGJL12/FB99KR0HAVGJL12.SMALL.jpg Q0HGIEPHAVGJL13 hydronics A couple of the tutorials use the following arrays... http://code.google.com/p/lolshield/downloads/list I spent a couple hours trying to help out a friend and could not dumb the code down to address individual LEDs using the understood matrix below... uint16_t BitMap[][9] PROGMEM = { {1, 0, 0, 0, ...
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Continue Reading »]]> technology Wed, 26 Dec 2012 21:59:12 PST http://www.instructables.com/answers/How-do-I-use-an-Arduino-to-write-say-21-volts-Ho/ /files/deriv/F35/W51Z/H4AG8U21/F35W51ZH4AG8U21.SQUARE2.jpg /files/deriv/F35/W51Z/H4AG8U21/F35W51ZH4AG8U21.SQUARE.jpg /files/deriv/F35/W51Z/H4AG8U21/F35W51ZH4AG8U21.SMALL.jpg QRWRODRH4AFS5RM hydronics I'm working with a university and they love their Hobo's and I don't blame them... they're pretty straight forward to use...  I'd like to write to the Hobo... here's the hobo analog inputs: 0 to 2.5 Vdc; 0 to 5 Vdc; 0 to 10 Vdc; 4-20 mA Hobo stats: http://www.onsetcomp.com/products/data-loggers/u...
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Continue Reading »]]> technology Sat, 7 Jul 2012 15:17:06 PDT http://www.instructables.com/answers/IR-Reflective-Sensors-for-Arduino/ /files/deriv/FKZ/FR4U/GZUAFYDK/FKZFR4UGZUAFYDK.SQUARE2.jpg /files/deriv/FKZ/FR4U/GZUAFYDK/FKZFR4UGZUAFYDK.SQUARE.jpg /files/deriv/FKZ/FR4U/GZUAFYDK/FKZFR4UGZUAFYDK.SMALL.jpg QNCSABNGZV1CG0K hydronics I just ordered a bunch of reflective sensors... Similar to the sparkfun one (I've not decided digital or analog yet)...I'd like to connect them all up similar to the Pololu Arrays...  I want to hook up like ~30 and read them individually... How do you differentiate so many inputs into the Arduino? ...
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Continue Reading »]]> technology Fri, 16 Mar 2012 12:29:21 PDT http://www.instructables.com/answers/Im-trying-to-design-a-circuit-that-detects-audio-/ /files/deriv/FC9/079A/GYZNVQUW/FC9079AGYZNVQUW.SQUARE2.jpg /files/deriv/FC9/079A/GYZNVQUW/FC9079AGYZNVQUW.SQUARE.jpg /files/deriv/FC9/079A/GYZNVQUW/FC9079AGYZNVQUW.SMALL.jpg Q8NIDEZGZ38JDDP hydronics What are the advantages/disadvantage of using this LargeMouthBass' PIC processor/code over a LM567 Tone Decoder? I might use an Aruduino or another IC to command the PIC(or 567) and to output to a couple of LEDs as visual indicators...
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Continue Reading »]]> technology Mon, 27 Feb 2012 10:06:31 PST http://www.instructables.com/answers/How-do-i-wire-a-condenser-mic-into-my-audio-input-/ /files/deriv/F2F/9LCZ/GZ0BVN35/F2F9LCZGZ0BVN35.SQUARE2.jpg /files/deriv/F2F/9LCZ/GZ0BVN35/F2F9LCZGZ0BVN35.SQUARE.jpg /files/deriv/F2F/9LCZ/GZ0BVN35/F2F9LCZGZ0BVN35.SMALL.jpg QHNVQ2PGYVDIX4G hydronics Ok, I answered it myself but I looked long and hard so hear is one option for connecting a condenser mic to a pc. This is 20 year old microphone that shipped with my family's Apple LC in 1992.  The mic works well with one of my laptops audio card... Not sure what the Zenner diode value is but its p...
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Continue Reading »]]> technology Sat, 25 Feb 2012 13:30:36 PST