GSM/GPRS/GPS Shield is an Arduino shield based on the Quad-band GSM/GPRS/GPS module SIM908.
Features
General
- Arduino connectivity, connects to Arduino Board directly
- NOKIA speaker & mic, supports hands-free phone talk
- Onboard CP2102 for easily debugging through USB interfere
- Onboard 74HC125, for time-shared controlling GSM and GPS port through single serial port
- Earphone insert detection & call vibration
- Quad-band 850/900/1800/1900MHz
- GPRS multi-slot class 10
- GPRS mobile station class B
- Compliant to GSM phase 2/2+
- Class 4 (2 W @ 850/900 MHz)
- Class 1 (1 W @ 1800/1900 MHz)
- Control via AT commands (GSM 07.07, 07.05 and SIMCom enhanced AT Commands)
- SIM application toolkit
- Supply voltage range :
- GPRS: 3.2 ~ 4.8 V
- GPS: 3.0 ~ 4.5V
- Operation temperature : -40 °C to +85 °C
SMS
- Point-to-point MO and MT
- SMS cell broadcast
- Text and PDU mode
Audio
- Tricodec
- Half rate (HR)
- Full rate (FR)
- Enhanced Full rate (EFR)
- Hands-free operation
- Echo cancellation
GPRS
- GPRS class 8/10: max. 85.6 kbps (downlink)
- PBCCH support
- Coding schemes CS 1, 2, 3, 4
- PPP-stack
CSD
- CSD up to 14.4 kbps
- USSD
- Non transparent mode
GPS
- Receiver type
- 42-channel
- GPS L1 C/A code
- High-performance STE engine
- Sensitivity
- Tracking: -160 dBm
- Cold starts : -143 dBm
- Time-To-First-Fix
- Cold starts : 30s (typ.)
- Hot starts : 1s (typ.)
- Accuracy
- Horizontal position : <2 .5m="" cep="" li="">
- Power consumption (GSM engine in idle mode)
- Acquisition : 77mA
- Tracking : 76mA
Whats On board?
- Earphone jack : SIM908 2nd analog voice channel output
- GSM antenna connector : SMA interface
- Arduino expansion connector : for connecting with an Arduino board
- GSM antenna connector
- SIM908 control interface
- GPS antenna connector
- USB TO UART interface
- NOKIA original speaker : SIM908 1st analog voice channel output
- Arduino reset button
- SIM908
- SIM908 network indicator : blinking slowly when network registration is successful
- Power indicator
- Mic : SIM908 1st analog voice channel input
- SIM card slot
- CP2102
- UART Tx/Rx indicator
- Power switch
- 6V~9V DC power jack
- Vibration motor
- 74HC125
- NCP2890 power amplifier : amplifies the SIM908 1st analog voice channel
- MIC29302 power chip
- SIM908 analog output positive jumper :
- open it when NCP2890 is enabled
- short it when NCP2890 is disabled
- SIM908 analog output negative jumper :
- open it when NCP2890 is enabled
- short it when NCP2890 is disabled
- NCP2890 enable jumper :
- short the EN and VBAT to enable
- short the EN and GND to disable
