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GY-63_MS5611/libraries/DHTlib/readme.md

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0.1.34 DHTlib
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# DHTlib
Arduino library for DHT temperature and humidity sensor. AVR optimized
Update readme.md file (no code change)
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0.1.34 DHTlib
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## Description
+ version 0.1.20 + changed return type to int8_t reducing footprint with 34 bytes + minor comment change
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The DHT11, 21, 22, 33 and 44 are relative inexpensive sensors for measuring temperature and humidity.
+ now including the readme.txt
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+ version 0.1.20 + changed return type to int8_t reducing footprint with 34 bytes + minor comment change
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This library can be used for reading both values from these DHT sensors.
+ version 0.1.13 (version 0.1.12 not usable -> skipped) + added support for DHT33 + DHT44 + added test sketches for DHT33 + DHT44 + improved protocol handling + refactored code style, + refactored footprint (part interface inline) + renamed private _read => _readSensor + added dht_tuning sketch to see timing
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The DHT11 only returns integers (e.g. 20) and does not support negative values.
The others are quite similar and provide one decimal digit (e.g. 20.2)
+ now including the readme.txt
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The hardware pins of the sensors and handshake are identical so ideal to combine in one lib.
+ updated readme.txt (dhtlib)
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The library (0.1.13 version) is confirmed to work on:
+ now including the readme.txt
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- UNO (tested myself)
- 2009 (tested myself)
- MEGA2560
- DUE
- attiny85 @8MHz
- Digistump Digix @ 84 MHz
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Later 0.1.xx versions are optimized for AVR only.
+ now including the readme.txt
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link fix
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More information - http://playground.arduino.cc/Main/DHTLib -
+ version 0.1.17 + replaced micros() with adaptive loopcount + removed DHTLIB_INVALID_VALUE (user should decide if value is usable) + more detailed errors per phase of handshake + added DHTLIB_ERROR_CONNECT + added DHTLIB_ERROR_ACK_L DHTLIB_ERROR_ACK_H + added fix for pre 1.0 (not tested)
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For latest version for the DHT, check https://github.com/RobTillaart/DHTNEW
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## DHT PIN layout from left to right
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| Front | | Description |
|:------|:----:|:--------------|
| pin 1 | | VCC |
| pin 2 | | DATA |
| pin 3 | | Not Connected |
| pin 4 | | GND |
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## Operational
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See examples
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## Versions:
==> See DHTStable library for latest stable version for all platforms.
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- version 0.1.13 is the last stable version for both AVR and ARM
- version 0.1.14 and up are not compatible anymore with pre 1.0 Arduino.
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These have breaking changes wrt ARM based arduino's e.g DUE.
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- version 0.1.15 is stable version for AVR only
- version 0.1.16 and 0.1.17 have breaking changes for DHT11
- version 0.1.18 works again for DHT11 (avr only)
- version 0.1.19 fixed masking bug DHT11 (avr only)
- version 0.1.20 Reduce footprint (34 bytes) by using int8_t as error codes. (thanks to chaveiro)
- version 0.1.21 replace delay with delayMicroseconds() + small fix (thanks to codingforfun)
- version 0.1.22 undo delayMicroseconds() for wakeups larger than 8
- version 0.1.23 fix https://github.com/RobTillaart/Arduino/issues/31
- version 0.1.24 fix https://github.com/RobTillaart/Arduino/issues/33
- version 0.1.25 fix https://github.com/RobTillaart/Arduino/issues/80
- version 0.1.26 Explicit support for AM23XX series and DHT12
- version 0.1.27 added _disableIRQ flag
- version 0.1.28 refactor
- version 0.1.29 fix negative temperature DHT12 - issue #111
- version 0.1.30 own repo version
update libraries A-D
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