Keyestudio Smart Little Turtle Robot V3 Manual page 196

www.keyestudio.com
keyes BT car is an APP rolled out by keyestudio team. You could control the
robot car by it readily.
(2) Test the key value of App
Special Note: Before uploading the test code, you need to remove the
Bluetooth module, otherwise the test code will fail to upload. After the
code is uploaded successful, then reconnect the Bluetooth module.
/*
keyestudio
lesson 14.1
Bluetooth test
http://www.keyestudio.com
*/
char BLE_val;
void setup()
{
Serial.begin(9600);
}
void loop()
{
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