Christmas Lights dance to music - trouble with getting earphone jack to work
we working on following project: http://www.hobbyist.co.nz/?q=dancing-lights
the setup looks ok , can 4 leds lighting up, when plug in analog 0 wire , try them flashing music nothing happens. have tried different headphone cable no success. not sure white cable , supposed go. have a0 join directly orange , green cables.
if has suggestions of can try next appreciated. going nyears @ least!
the setup looks ok , can 4 leds lighting up, when plug in analog 0 wire , try them flashing music nothing happens. have tried different headphone cable no success. not sure white cable , supposed go. have a0 join directly orange , green cables.
if has suggestions of can try next appreciated. going nyears @ least!
try changing 1st line of code to:
also, it's bad idea connect left & right channels suggest disconnect 1 channel.*
and, prevent negative half of ac audio waveform damaging arduino, input should bias input @ 2.5v. input biased @ 2.5v, silence read 512. you can subtract-out bias in software (and can take absolute value or throw-away negative e values).
* if want "get fancy" can connect left & right channels 2 different analog pins. then, can sum channels in software or make stereo effect different lights left & right channels, etc.
code: [select]
#define soundpin a0
also, it's bad idea connect left & right channels suggest disconnect 1 channel.*
and, prevent negative half of ac audio waveform damaging arduino, input should bias input @ 2.5v. input biased @ 2.5v, silence read 512. you can subtract-out bias in software (and can take absolute value or throw-away negative e values).
* if want "get fancy" can connect left & right channels 2 different analog pins. then, can sum channels in software or make stereo effect different lights left & right channels, etc.
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