Online Sample Chapter CCNA Routing and Switching Portable Command Guide Enhanced Interior Gateway Routing Protocol EIGRP. AT Command Mode of HC 0. HC 0. 6 Bluetooth Module 5 Steps. For HC0. 5 Once the module is in AT mode, open arduino. Go to tools serial port select the com port your USB to TTL converter is connected to to find out, go to device manager of your pc portsCOM LPT. Now open the serial monitor. Take Command 16 Serial PortThe bt module is now communicating at a baud rate of 3. So change the baud rate to 3. Also change no line ending to both NL CR found just beside the baud rate. If you dont have Arduino IDE, then download Tera termwhich is an excellent terminal emaluator. Open Tera term. A pop up window will open, Select Serial and choose the com port the usb to ttl converter is connected to. Press ok and a connection will be established. Troubleshooting. See ModemHOWTO for troubleshooting related to modems or getty for modems. For a TextTerminal much of the info here will be of value as well as. Book Title. Cisco IOS Interface Command Reference, Release 12. Chapter Title. Interface Commands apsauthenticate cutthrough PDF Complete Book. Take Command 16 Serial Code' title='Take Command 16 Serial Code' />Now go to setup serial port set the baud rate to 3. After setting up baud rate go to setup terminal change the newline to CRLF from the drop down menu. Also check the local echo box under newline. Now the set up is complete. If you use arduino UNOMEGA board, then copy paste the following code, which is just a modification of Software Serial example included in arduino examples. Software. Serial. Software. Serial my. Serial1. RX, TXvoid setup Serial. Mode9,OUTPUT digital. Write9,HIGH Serial. Enter AT commands my. Serial. begin3. 84. Serial. available Serial. Serial. read if Serial. Serial. writeSerial. Upload the code to the arduino board, once the code is uploaded, open Serial monitor, change no line ending to both NL CR at the bottom, close it and disconnect arduino board from usb. Now again reconnect arduino to usb,connect vcc of bluetooth module to arduino 5volt, and open serial monitor. The led on the module should blink at the interval of 2 seconds. Sae Crack there. That means it has entered the AT mode. Now you are ready to enter AT commands. For HC0. 6 Now there is a small drawback for HC0. AT command entry. Instead, it acts to whatever character you entered after one second. Hence, if you are not able to complete a command entry within a second, it will be ignored. Because of this behavior, it may be extremely difcult to do manual entry conguration using Windows Hyper terminal software. Terminal software that allows batch sending of multiple characters must be used. I found that arduino works fine. On the other hand, if you use Tera term you have to write down the AT commands in a notepad, than copy paste it to Tera term. Right clicking on Tera term console will automatically paste the copied line and execute immediately. So once the module is connected to usb ttl converter and powered up, open arduino, select the usb ttl com port, set baud rate to 3. No other settings have to be applied unlike HC0. And for Tera therm, select appropriate com port, go to setup serial port set the baud rate to 3.