Shield GSM, GPRS, GPS Waveshare for Arduino

Description

GSM/GPRS/GPS Shield is an Arduino shield based on the Quad-band GSM/GPRS/GPS module SIM908.

What's on Board:

1. Earphone jack : SIM908 2nd analog voice channel output
2. GSM antenna connector : SMA interface
3. Arduino expansion connector : for connecting with an Arduino board
4. GSM antenna connector
5. SIM908 control interface
6. GPS antenna connector
7. USB TO UART interface
8. NOKIA original speaker : SIM908 1st analog voice channel output
9. Arduino reset button
10. SIM908
11. SIM908 network indicator : blinking slowly when network registration is successful
12. Power indicator
13. Mic : SIM908 1st analog voice channel input
14. SIM card slot
15. CP2102
16. UART Tx/Rx indicator
17. Power switch
18. 6V~9V DC power jack
19. Vibration motor
20. 74HC125
21. NCP2890 power amplifier : amplifies the SIM908 1st analog voice channel
22. MIC29302 power chip
23. SIM908 analog output positive jumper :
    • open it when NCP2890 is enabled
    • short it when NCP2890 is disabled
24. SIM908 analog output negative jumper :
    • open it when NCP2890 is enabled
    • short it when NCP2890 is disabled
25. NCP2890 enable jumper :
    • short the EN and VBAT to enable
    • short the EN and GND to disable

Remarks: The power control of SIM908 module can be controlled by PWRKEY pin. The switching between on and off states of the module can be controlled by connecting PWRKEY to GND for 1-2 sec and then disconnecting them.
For example, when SIM908 module is on, connecting PWRKEY to GND for 1-2 sec and then disconnecting will make the module switch to off.
If SIM908 module is off, tying PWRKEY to GND for 1-2 sec and then disconnecting will make the module switch to on as well (similar to a warm-boot). When PWRKEY pin is always connected to GND, SIM908 module will remain on.

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
• Power consumption (GSM engine in idle mode)
  • Acquisition : 77mA
  • Tracking : 76mA