The control pins RS, RW, and E pins are connected to P3.6, GND and P3.7 pins respectively. The data lines of the LCD Display are connected to PORT1 Pins. Means, we need 8 data lines to display the data. Here, the 16 x 2 LCD is used to display message and is used in 8 – bit mode. The above circuit of the Wireless Electronic Notice Board using GSM consists of 8051 Microcontroller, GSM Module (Modem) and 16 x 2 LCD. Proteus (for circuit diagram and simulation)īuy Step by step Guide along with Code: Wireless Electronic Notice Board using GSM » Circuit Design.
In the above command, “REC UNREAD” indicates that message is unread message, “MD-WAYSMS” indicates sender mobile number or name, 13/05/20 indicates the date, 15:31 indicates time and Electronics hub is the content of the message.įrom the above command we need to extract message ( Electronics Hub) sent by the user to display it on the notice board (LCD). After giving this command to the GSM module, it will send the below command serially. Here, the number “3” indicates the location of the message to be read. The command to read the message from GSM modem is Now you need to read this unread message to display on LCD. In the above command, number “3” indicates the location of the new message i.e. When user sends the message from the mobile, GSM modem sends the below command serially to indicate that a new message is received. Now, the microcontroller reads the message from the GSM Modem and displays it on LCD. When we send the message from the mobile, the GSM Modem which is connected to the Microcontroller and the display unit, will receive the message.
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