SIM808 GSM + GPRS + GPS Cellular Module Audio Screws are 5

Screws are 5

including directions at the website

and the manufacturer recommends putting a 10 µF capacitor or larger across power and ground close to the sensor to stabilize the power supply line)

These gearmotors are the same ones utilized in the Magician Chassis and RedBot Kit and offer a cheap and easy to use setup to get your wheels turning

Romi 32U4 Control Board with Raspberry Pi on a Romi chassis

SIM808 GSM + GPRS + GPS Cellular Module Audio Screws are 5The SIM808 GSM GPRS Module is at the heart of our Adafruit FONA 808 Mini Cellular GSM + GPS Breakout . For people who want to integrate a cellular (GSM GPRS) module into their design without the full breakout, this hand solderable module is pretty nice! Please note we don't provide any tech support for this module, but we do have a schematic as well as a collection of datasheets and app notes that can be used to interface . Quad band 850 900 1800