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5973929e63e99a61662e7e1dd1026796d8631cdc

By cleverly setting _lastreadtime in begin() to make sure that it looks like the last read was alrady 2000 ms ago, even on startup when millis() still returns 0, there is no longer a need to keep a separate firstreading variable, saving a byte of memory and a bit of code.
Fix #37 by optimizing pulse read to use direct port access on AVR, stops checksum failures from missed signals.
This is an Arduino library for the DHT series of low cost temperature/humidity sensors. To download. click the DOWNLOADS button in the top right corner, rename the uncompressed folder DHT. Check that the DHT folder contains DHT.cpp and DHT.h. Place the DHT library folder your <arduinosketchfolder>/libraries/ folder. You may need to create the libraries subfolder if its your first library. Restart the IDE.
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