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Data Sheet

ManualsBrandsMakerfabs ManualsArduino ShieldsSIM808 GPS/GPRS/GSM Arduino Shield
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Connectors:
Headset jack-This is a 'standard' TRRS 3.5mm phone headset jack with stereo earphone
and mono microphone. Any 'iPhone' or 'Android' compatible (but not iPhone original) should
work.
uFL GSM connector-This is the GSM Antenna connector, an antenna is required to use the
SIM808 shield!
uFL GPS connector-This is the GPS Antenna connector, an antenna is required if you want
to get GPS readings!
uFL BT connector- This is the Bluetooth Antenna connector, in this version, there no have
the Bluetooth function.
SIM Connector
A 2G Mini SIM card is required to use the module. You can buy it in any cell phone shop. It
must be a 2G GSM card.
VRTC Battery holder
Power supply for RTC.
LEDs
PWR –Power light
1PPS –This is the 'pulse per second' output of the GPS
Status – Power on status. Lit when the Cell module is booted and running
NetLight – Network status. You can use this for checking the current state without
sending an AT command
64ms on, 800ms off - the module is running but hasn't made connection to the cellular
network yet
64ms on, 3 seconds off - the module has made contact with the cellular network and can
send/receive voice and SMS
64ms on, 300ms off - the GPRS data connection you requested is active
By watching the blinks you can get a visual feedback on whats going on.
POWER_KEY
Power on or power off the SIM808.
4. Pins usage on Arduino
D0 - Used if you select hardware serial port to communicate with SIM808
D1 - Used if you select hardware serial port to communicate with SIM808
D7 - Used if you select software serial port to communicate with SIM808
D8 - Used if you select software serial port to communicate with SIM808
D9 - Used for software control the Power ON or Power OFF of the SIM808
5. Usage
On its own, this shield can't do anything. It requires a microcontroller like an Arduino
to drive it! You will also need some required accessories to make SIM808 shield
work.
① SIM Card! A 2G Mini SIM card is required to do anything on the cellular network. US
AT&T no longer sells 2G SIMs and will shut off their 2G network, so for American
customers we recommend any T-Mobile or reseller (TING, SIMPLE mobile, etc) that