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Hei,As I encountered the same issue, when It only shows Program Started, it's better to check BMP180/185 and be sure to connect it properly (SDL/SDA and 3.3V).And the problem with DHT Pin, you just need to change the line #define DHTPIN 2 //Define DHT11 digital pin to #define DHTPIN 4 //Define DHT11 digital pin and it should work well.Hope it helps.
Hi,It's the amplifier of Rain Drop and Soil Humidity I suppose.
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