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The Shinyei PPD42NS sensor

This sensor emits a low occupancy time signal where the relative time the signal is in low state is measured.

The connections as are follows:

Shinyei pin WeMos Pin GPIO Comments
1: Common (GND) GND    
2: OUTPUT(P2) D6 19 through voltage divider 5V - 3.3V
3: INPUT(5V DC 90mA) 5V    
4: OUTPUT (P1) D7 23 through voltage divider 5V - 3.3V
5: INPUT T1 D0 26 DAC

-- Uli Raich - 2022-06-01

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Topic revision: r1 - 2022-06-01 - UliRaich
 
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