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Topic: LDR (Read 2 times) previous topic - next topic


Nov 08, 2008, 04:50 pm Last Edit: Nov 08, 2008, 05:08 pm by dev_000 Reason: 1
plz see this
i meant the power pin i can take a output of 9V 4m that rite???


Yes, the 9v pin can take positive nine volts. But you must not connect that voltage to any other pin on the arduino board. If you want to measure this voltage using the arduino analogRead, you must reduce the voltage (for example by two resistors connected as a voltage divider) so it is not higher than 5 volts when connected to one of the analog pins.


Nov 08, 2008, 06:25 pm Last Edit: Nov 08, 2008, 06:26 pm by dev_000 Reason: 1
k now understood... 8-)
sorry for the trouble.... :)

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