Problem: my HC-06 works only with D10-D11 Arduino digital pin. If I change RX/TX pin to another digital pin (e.g. 2-3 or default 0-1) - Arduino don't receive signal from BT-terminal on smartphone. But at the same time Arduino successfully transmit signal to terminal!
Probably the latter, as there is no lock. You are using software serial for bluetooth. PIns 0,1 are for hardware serial. Trying to use software serial on them is not only stupid in principle but guaranteed not to work. Software serial should work on other pins, providing you nominate them in the code in the proper manner. If you already have it working on 10,11, your problem is probably some little procedural thing that will only happen once, and you haven't done any damage.
It is good practice to wire Arduino Tx through a 1k/2k voltage divider. It is not usually fatal if you don't.
You might find the following background notes useful
Nick_Pyner:
Probably the latter, as there is no lock. You are using software serial for bluetooth. PIns 0,1 are for hardware serial. Trying to use software serial on them is not only stupid in principle but guaranteed not to work. Software serial should work on other pins, providing you nominate them in the code in the proper manner. If you already have it working on 10,11, your problem is probably some little procedural thing that will only happen once, and you haven't done any damage.
It is good practice to wire Arduino Tx through a 1k/2k voltage divider. It is not usually fatal if you don't.
You might find the following background notes useful
Visliy:
I'm trying to repeat this instruction. Test sketch (BT_2_WAY.ino) required connect like this image. Right?
Yes. Make sure the wiring is the right way round - Tx>Rx , Rx>Tx.
After setup scheme I'm upload sketch to Arduino. Bluetooth module disabled at upload time
Yes, You simply unplug Bluetooth prior to upload.
You can test the code is kosher by running it with the serial monitor. If that works and bluetooth doesn't, check the wiring - again(!) Ensure LED on bluetooth is solid, confirming phone is connected.
