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As far as I know you can configure the HC-05 module with AT commands. Sometimes you want to change the baud rate of the module, the role (master - AT+ROLE=1 /slave - AT+ROLE=1), to get module Bluetooth address(AT+ADDR?),or to reset the configuration (AT+ORGL). Take a look here to see how to enter in AT mode and how AT commands look like: http://www.linotux....


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By default, the ESP is in "single connection mode". This means that, at any time, there can only be one TCP connection. (UDP actually has no concept of a "connection", but the ESP still handles it like one.) This single connection must be terminated (closed) before a new connection (from/to the same or a different remote IP address) can be opened. In "multi ...


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Use AT+CIPGSMLOC command. It works well in SIMCOM modules. This command needs the GPRS service attached before you use it. So first attach the GPRS service using appropriate command sequence then use this command to get date and time from GSM network. For attaching GPRS service: CMD:AT+CGATT=1 CMD:AT+SAPBR=3,1,"Contype","GPRS" CMD:AT+SAPBR=3,1,"APN","" ...


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first send this two command AT+CLTS=1;&W AT+CFUN=1,1 and than AT+CLTS? check whether you get this reply +clts: 1 and than send this command AT+CCLK?


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There you go. void setup() { // Open serial connection to the xbee specifying the baud rate. Serial.begin(9600); // Define AT commands to rewrite the config once at startup // +++ -> Enters the AT mode // ATWR -> Saves the changes, ATAC doesn't work. // ATCN -> Exits AT mode // See http://widi.lecturer.pens.ac.id/Praktikum/Praktikum%...


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