Hi guys, I'm new to arduino and electronics so please bare with me. I've been trying to enter AT mode with a HC-05 bluetooth module (http://www.ebay.ca/itm/180957186752?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649). This is what I did;
- I used a USB to Serial adaptor (http://www.ebay.ca/itm/170910289160?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649).
- Connected TX bluetooth to RX adaptor, RX bluetooth to TX adaptor (Via a voltage regulator http://www.instructables.com/id/Cheap-2-Way-Bluetooth-Connection-Between-Arduino-a/step3/Wiring-the-Arduino-Bluetooth-transceiver/).
- Connected power (3.3v) and ground (I used a voltage regulator to bring the 5v from the adaptor down to 3.3v).
- Then I connected pin 34 bluetooth (PIO11) to 3.3v (To make the pin go high).
- Opened PuTTY and set it to Serial mode. Used COM8 (the USB to Serial adaptor COM port) and 9600 baud rate. (When this didn't work I also tried 38400 baud rate).
- In the terminal section of PuTTY set Local echo to Force on.
- Entered "AT\r\n" in PuTTY.
I didn't get an OK as the result. Did I do something wrong? Any help please?
Instructions on how to enter AT command mode (http://elecfreaks.com/store/download/datasheet/Bluetooth/HC-0305%20serail%20module%20AT%20commamd%20set%20201104%20revised.pdf)