I built my project according to this site ->
Kindly give the above link a read first.
I have arduino mega 2560, bluetooth module HC05 and servo motor 9g. I set up everything according to the site above.
When I send signal (0 or 1) through serial monitor, my servo rotates..... but through android apps (including app named: bluetooth terminal), even when my HC05 is connected with app via bluetooth, servo motor does not rotate when I send the signal (0 or 1). Why? All connections are same. Devices are fine. Please help me!!!!