#PYTHON SEND SMS FOR SMALL USE SERIAL#
#PYTHON SEND SMS FOR SMALL USE CODE#

You may use a PuTTY terminal to play with the SMS commands manually. to switch on/off the heater in a remote unoccupied winter residence and report the current room temperature.) (The Butler could be expanded to perform some useful actions when an SMS is received, e.g.

Turn your Raspberry Pi in a SMS Butler that returns an SMS with state information each time an SMS is received. In the following example the Raspberry Pi communicates via SMS.

Let you inspire and invent something special. Some of them may be very useful and professional. The SIM800 opens you the world for a many interesting communication projects.

#PYTHON SEND SMS FOR SMALL USE CODE#

Check that the smartphone starts without asking the code any more.Įxperiment 1: Raspberry Pi as a SMS butler You may also ask your network carrier to do it for you.

To do so, insert the SIM card into any smartphone you have at hand and apply the specific setup option for the SIM lock removal (mostly found under 'SIM Security'). Remarks: You must remove the SIM lock before you can use it in the modem. When the power switch is pressed a while, the system starts and connects automatically to your GSM net. Just mount the antenna, add a lock-free card SIM card, insert the module on the GPIO header and plug a USB cable from a 5V/2A supply. When powered by its 5V USB port, the Raspberry Pi is powered too. This module is simple to use, because it interfaces with the UART RX/TX of the Raspberry Pi and can be switched on/off and reset via GPIO I/O ports. There are even GSM break-out boards specially designed for the Raspberry Pi 40-pin header, like the 'RPI GSM Add-on V2.0' found on eBay. Since it needs a 4.3V power supply, check that the board includes a voltage regulator, so it can be powered with an external 5V USB power supply. This chapter is based on the SIM800 chip that is very versatile and available on several modules.

#PYTHON SEND SMS FOR SMALL USE SERIAL#

Most modems uses a serial (RS-232) communication link and the good old (extended) Hayes command set, with the 'AT' prefix. On the hardware side you need a GSM module, also called GSM modem, that can be interfaced with the Raspberry Pi. In most applications only SMS or data transmission with little data volume and low transfer speed is needed, so you may purchase a cheap 'data only' SIM card. Like with mobile phones you need a SIM card and a subscription from any provider. If your Raspberry Pi needs to communicate with the outside world when it is not in the range of a WiFi access point, a digital cellular network may be used. The source code of all examples can be downloaded from here.

Python send sms for small use