If you own an Arduino you might be thinking of taking it completely wireless.
You might think of buying sheilds like GSM and WIFI but buying it might be way too expensive.To replace them all with just one,a group of Egyptian inventors came with an idea of combining all these sensor on one platform "1sheeld" 1sheeld connects to your android smartphone via bluetooth,and uses sensors which are already available on your smartphone.
1sheeld can also use several sensors at a time like wifi,GSM,
Accelerometer, Gyroscope etc.
You can buy 1sheeld for under $60 from their official website linked below.
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