GPRS/GSM SIM900 Module Arduino Shield - Quad-Band breadboard power supply The LTC3588 Energy Harvester Breakout

The LTC3588 Energy Harvester Breakout converts tiny amounts of energy from piezoelectric elements

It is useful for quick visual monitoring of power

1 × Water Mini Pump RS-360S

it is highly compact

3 10/100Mbit/s

GPRS/GSM SIM900 Module Arduino Shield - Quad-Band breadboard power supply The LTC3588 Energy Harvester BreakoutSIM900 based GSM GPRS shield that stacks straight onto your Arduino. Give any project the ability to send and receive SMS, make and take calls, and pull data over GPRS. Handy when WiFi isn't around. GPRS class B, so it runs one service at a time. A call or SMS pauses the GPRS session and it resumes once you're done. Specs Chip SIM900, quad band 850 900 1800 1900 MHz GPRS Multi slot class 10 8, mobile station class B (one service at a time) Control AT