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Topic: digitalread not working until first pass of loop() ?! (Read 738 times) previous topic - next topic

MarkT

The Aref pin voltage depends on the selected analog reference and I think is fairly high impedance.  Its not for connecting pullups to!!
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CrossRoads

Aref is Not connected to +5v on the UNO, it only has a decoupling cap to ground.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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