I've got a bit of a puzzler. This is my first big project with an Arduino (Mega 2560,) and I've run into something odd. In the code pasted in below, things work perfectly as-is. However, if I comment out the readSensors() call inside the loop and uncomment it from inside the timer, the first sensor…

DHT11s read fine from loop, but first one in list doesn't work when in timer...?

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