Module Introduction:
SIM900A_mini plate using high-performance industrial grade GSM / GPRS module: SIM900A, Working frequency: GSM900 / 1800MHz. Can
achieve telephone voice, SMS (SMS, MMS), GPRS data transmission
function (support transparent mode, domain name resolution and IP mode),
also has a DTMF decoder (button can identify each other) and TTS (local
voice broadcast). Hardware design to be optimized, high-efficiency switching power
supply, SIM card with mainstream MICRO deck, quality is more robust.
Module Applications: Remote monitoring, remote meter reading smart,
intelligent home and automotive equipment and other telecommunications
equipment.
See the detailed description of the module User manual: http:?
//yun.baidu.com/share/link Shareid = 4237063942 & uk = 2083687591
Module Features:
Wide voltage power supply: 5 ~ 18V DC power supply, the
flexibility to adapt to different supply voltage systems, GPRS module
power supply is characterized by low voltage, peak current, and
therefore the higher the development board supply voltage, current
smaller, less power pressure.
Power-automatic start: Power button or MCU control without power, easy to operate and simple.
Power can control: power control module power through pin control, high power, low power. Module power consumption when approaching zero, when the module
crashes can be restarted by the program control module, without having
to reboot the machine off, default pin is high, do not be vacant.
Serial TTL and RS232: module via the serial port RS232 or TTL
level control, easy access to a variety of microcontroller or other
serial devices.
Audio interface: audio input and audio output interface pin by pin, for the user with flexibility.
Firmware Upgrade Interface: Interface module firmware upgrade via pin
leads, via the serial port SIM900A firmware upgrade, the company
provides SIM900A latest firmware and two brush firmware tutorial for
users to achieve MMS, DTMF decoding, TTS text to speech function.
Provider:
dial number.
answer the phone.
Send SMS TEXT format.
Send Chinese SMS.
Receive SMS control LED lights.
GPRS_TCP program (dynamic IP).
GPRS_TCP procedures (domain name).
GPRS_UDP program (dynamic IP).
GPRS_UDP procedures (domain name).
GPRS transparent transmission mode program.
Comprehensive functional demo program (STM32).
Comprehensive functional demo program (STC12).
Comprehensive functional demo program (STC15).
Base station location function, due to Google's servers shut down the
corresponding service, so this feature does not work correctly.
We choose SIM900A_mini board reasons:
Suggested Use:
Just
in case the power supply module can automatically start, if an
exception occurs during long-running module, the software can be shut
down, close the module. If
you use the software shutdown failed to solve unusual problems, you can
power through the enable pin, completely cut off the power supply, the
module to completely reset. The power control function is crucial. Peer
just to make it easier for the module is powered from the start, but
never consider how to resolve the exception to the module. If you can not start from, then the module completely abolished. Our long-term product designed to meet industrial applications, for a more comprehensive consideration of the details perfect.
