Currency
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The wireless printer
The wireless printer uses GPRS/CDMA to do data real-time transmission and auto-printing wherever covered with mobile network without the need of computer and netting twine.This product is widely used among stores,markets for paying bills which works simple and fast.
The vehicle tracker with GPS+GPRS
The project is based on a GSM/GPS/GPRS with main function of detecting an illegal entry and communicating with its geographical position using. If your car is not parked where do you think, something is wrong... Call immediately to your Arduino, hidden in your car, and it will send you an SMS with the location, longitude and latitude at the moment, and it also sends GPS data to a web server with the realtime position (Google Maps). Thanks to the GPS+GPRS shield you can track your car in realtime. This shield is programmed to recognise your number and only if it is correct it will send you this data.
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Daily SMS message
Have you tried to make a project that has power and cell service but no WiFi service when you only want a single message (email or SMS) sent each morning with a simple report on the movement activity detected over the past 24 hours. The Arduino collects motion sensor data totaling hourly. This system can also be adapted to other types of sensors, such as temperature, humidity, water level, gas, etc. And just feel free to modify the code to add your message output.
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Finally allow me share several open hardware resources to help you do these projects:
Crowtail- SIM808
Elecrow SIMduino UNO+SIM808 GPRS/GSM Board
Crowtail- A6 GPRS/GSM Module
SIM808 GPRS/GSM+GPS Shield
A6 GPRS/GSM Shield