File:Plant board top.jpg: Revision history

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2 July 2017

19 September 2013

  • curprev 06:1106:11, 19 September 2013‎ Glu talk contribs‎ 574 bytes +574‎ The board was a bit small for this project, but all fits. The whole thing uses the magic of the 4093 (a quad, dual input, Schmitt-trigger NAND port IC). It feeds the feelers (green pins) with a low current AC, then checks whether or not the voltage is hig
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