Bluetooth connected but led pins does not light up about arduino-bluetooth-basic

[inspiritpanda]

hi i have solved this issue. realised that for arduino mega if i am using tx1 and rx1, i would need to change the code from Serial to Serial1 instead.

[Mayoogh]

Hey @inspiritpanda

Did you try sending input through the serial monitor?

Remove the tx rx connection and try sending 1 and 0

I am not sure how to test if the Bluetooth module can send/receive data from the phone application.

Similarly, you can test this also with the serial monitor

[inspiritpanda]

Hello,
yes i tested with the tx and rx connection removed and typed in the commands in serial monitor and the led lights turned off and on. when i connected the bluetooth module, the red light on the hc-05 starts to blink slower at around 2secs interval which shows that it has been connected. but i still do not know what is the issue and why the lcd cannot be controlled via application. @Mayoogh

[Mayoogh]

Are you using a BLE device?
Try the following.

1. Forget the paired Bluetooth device and pair again
2. Double check Bluetooth serial connection TX to RX and RX to TX
3. After successful pairing the led blinking pattern on the Bluetooth module should change
4. Check if values are showing on the serial monitor if the button is pressed (from the android device)
5. Try with a different android device / Bluetooth module

[inspiritpanda]

Hi @Mayoogh
yes, i am currently using a BLE device and i have also tried with another phone as well but it still doesnt work.
when i pressed the button on the android device, there is no value showing on the serial monitor. which means the phone is not communicating with arduino?

[Mayoogh]

It's a limitation of this application. Which I have already mentioned in the readme .

Currently, this application does not support BLE (Bluetooth Low Energy) devices. only works with SPP (Serial Port Profile) devices.
BLE support will be added in the future release.

Hence closing.

[inspiritpanda]

Just to confirm, isnt android devices supporting SPP and BLE as well? @Mayoogh

[Mayoogh]

Just to confirm, isn't android devices supporting SPP and BLE as well? @Mayoogh

Yes, android supports both SPP and BLE. The BLE support is currently not integrated with this app

[inspiritpanda]

then in this case why am i still not able to use the mobile app to control the led light? @Mayoogh

[Mayoogh]

In general, Android devices support BLE but this particular app currently does not support BLE. There are many apps already available with BLE supports.