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oliexdev
2014-12-21 02:38:56 -08:00
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@@ -73,6 +73,7 @@ For changing the default parameters I had to send AT commands to the Bluetooth m
The KEY pin has to be pulled high to enter AT mode of the HC-05 Bluetooth module. Sometimes the KEY pin is not on the breakout board. If that the case you have to solder a wire directly to pin 34 on the HC-05 module, see the [HC-05 Manual](https://github.com/oliexdev/openScale/raw/master/doc/hc_05/HC_05_Manual.pdf) for more details. The default baud rate in AT command mode is 38400 bits/s. Use the following sketch to configure the HC-05 Bluetooth module:
```C
#include <Wire.h>
#include <SoftwareSerial.h>
SoftwareSerial BTSerial(9, 8); // RX | TX