The title says it all...
First, as I'm using 6 ldrs in parallel in digital input mode, is there any difference between using the schematic from wiring (http://www.wiring.org.co/learning/examples/photoresistor.html, signal pin connected to digital instead of analog) and the one I'm using right now:
I'd like to know that, because I've already soldered the ldrs and won't like the idea of doing it again. However, Arduino gets only high signals, no matter how high or low is the resistance of the ldrs. Using my multimeter, I noticed that when a ldr has a resistance of ~40 kohms the voltage between digital input and ground is 4.80 V, decreased by 0.50 volts when pointing direct laser beam to the ldr (resitance well below 1 kohms), so there have to be something wrong. When I disconnect the ground wire from a bigger circuit, the resistance between the ground and +5v is roughly 1660 ohms as it should be with six 10k resistors.
I'd like to hear your ideas since I don't know what else to do than buy a new atmel chip (overseas, will probably take more than 2 weeks).
Looking forward to your replies,
Timo
Update: The issue with pots and Maxsonar mostly cleared out, ALWAYS remember to check the order of the pins in Arduino first...
Update2: Changed my ldr circuit to the one from wiring, everything is running just fine now.