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Dawn Chorus (MAD18G)


I enjoyed this kit a lot. It was easy to assemble if care is taken, and it also works very well. One problem however, is that the unit draws a continous current of about 7 mA and drains the 9v battery (basic type - not the fancy Lithium type) in about 3 days. This means a mains powered supply is required if the unit is left on all the time (which is as it should be: there is no point in waking up before dawn to turn the thing on!) Otherwise, an enjoyable project. I have also tested it with voltages between 7 and 12, and the volume of the chirps increases with voltage.
Date Added: 24/12/2011 by Hentie Potgieter
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