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The Arduino that I am using is the Duemilanove. Analog pins 4 and 5 are the SDA and SCL lines to the I2C bus, going to pins 15 and 14 respectively on the PCF8574 I/O expander.
I am currently exploring 2 different temperature sensing devices for the Arduino:
$ arduino-cli compile -b arduino:avr:mega MyFirstSketch
where MyFirstSketch is a directory containing the sketch file MyFirstSketch.ino
From the Arduino Playground comes this Class for DHTxx sensors (xx=11-21-22-33-44). Copy at /home/ajh/Arduino/dht_test, libraries at /home/ajh/Arduino/libraries/DHTLib.
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05 Nov 2023
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