Use BT SPP wireless connection between microcontroller and Android app.

[RoachWZ]

#324 I installed a Bluetooth module on the car, which can remotely control the car. Use BT SPP wireless connection between microcontroller and Android app.

The app will not to connect automatically, you must use this switch to select Bluetooth device connect/disconnect.
I recorded a demonstration video of Bluetooth connection

[reger24]

After adjusting the arduino firmware to accept BT input (via #include <SoftwareSerial.h> and BLTSerial.....) it worked for me.

[RoachWZ]

After adjusting the arduino firmware to accept BT input (via #include <SoftwareSerial.h> and BLTSerial.....) it worked for me.

So you're using ESP32, right? I use the Nano's TX RX to connect with the Bluetooth module. No change arduino firmware

[reger24]

@RoachWZ

So you're using ESP32, right? I use the Nano's TX RX to connect with the Bluetooth module. No change arduino firmware

not 100% sure but I think mine is called ESP8266 + HC02 (a UNO board)

[reger24]

Works for me (as mentioned in earlier comment, after adjusting firmware (ESP32) with Softwareserial.h to accept BT).
It's a nice feature (I already was missing, before I purchased a USB cable).
I'd accept the pull request.

[thias15]

@RoachWZ, your contribution would still be appreciated. We just need to merge the BLE PR first to support ESP32 and then find a way to select the BT mode. Sorry for the delay in reviewing, but we have been very busy.