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Full Discussion: Send SMS to mobile
Top Forums UNIX for Advanced & Expert Users Send SMS to mobile Post 303042020 by Neo on Wednesday 11th of December 2019 10:39:10 AM
Old 12-11-2019
Or maybe this kit, also on AliExpress?

Code:
https://www.aliexpress.com/item/32953399908.html?spm=a2g0o.detail.0.0.4d8582fcn1cmUD&gps-id=pcDetailFavMayLike

Code:
Features: 
The onboard two set power supply interface VCC5 5V power supply, VCC4 interface, 3.5--4.5V power supply, optional power on self starting (default) and control start.
The onboard SMA (default) and IPXmini antenna interface, SIM900A interface reserved reset.
The size of the module is 49*50, all the new and original device.
The computer can give early computer debugging USB module power supply, a very large amount of data under the condition of the recommended current more than 1A. Standby dozens of MA data can be set to provide dormancy, dormancy of 10MA low power. Support 2, mobile phone 3,4G card.
The serial port circuit: support for 3.3V single chip microcomputer. TTL serial port support
3.3 and 5V single chip microcomputer.
The SIM card circuit to increase the SMF05C ESD chip.
Antenna circuit: guarantee short and straight, so as to ensure the signal strength.
PCB display screen printing mark: each interface, convenient development two times, the SIM900/A hardware is completely follow the design when the design manual.
Two power supply interface: VCC5, 5V DC above 1A. Computer 5V power supply can be early computer USB. DC long data circuit over larger recommended 5V1A. VCC4, 3.5--4.5V power supply, ibid., suitable for lithium battery.
Control pin all leads.
A TTL level, compatible with 3.3V and 5V.
The two antenna interface, the default SMA straight head, connector for IPXmini antenna.
One way of speech interface, the way Mike interface.
The control interface of each pin description:
GND - GND
SIMR SIM900A RXD, TTL level, can not be directly connected to the 232 level
SIMT SIM900A TXD, TTL level, can not be directly connected to the 232 level
RST - SIM900A reset, active low
VCC_MCU when the SIM900A module and 5V TTL level communication, this pin is connected to DC 5V; when the level of communication of SIM900A and 3.3V TTL, this pin is connected to DC 3.3V.
VCC5----DC 5V input.
VCC4------DC3.5--4.5 input
 
Onboard Resources:
Serial port circuit(with protection)
Antenna interface circuit(SMA bend female port)
SIM card circuit(flip SIM slot)
4*3.5 fixture hole 4pcs
SIM900A serial port output terminal
 
Specifications:
Size:49mm x 47mm
Net Weight:28g
Weight: 38g 
 
Package Included:
1 x SIM900A V4.0 kit
1x Power Cable
1x Antenna

This User Gave Thanks to Neo For This Post:
 

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sendsms(1)							      gnokii								sendsms(1)

NAME
sendsms - command line tool to send SMSes using gnokii SYNOPSIS
sendsms [OPTIONS] DESCRIPTION
sendsms allows you to send a SMS using gnokii not knowing the syntax of gnokii command. It is written using dialog and allows to send a text SMS choosing recipients from the phone address book or entering it manually. OPTIONS Available options: [--debug|-D] May bother with more debugging messages. For debugging purpose. --simul[ate], -S Simulation mode. Doesn't really send SMS by phone. Only simulates. For debugging purpose. --forceSMread, -s Forces sendsms to read phonebook from SIM card, and to parse the generated file in order to update the numbers' list (useful only if required to pickup number from the phone's memory). See NOTE. --forceMEread, -m Forces sendsms to read phonebook from phone memory, and to parse the generated file in order to update the numbers' list (useful only if required to pickup number from the phone's memory). See NOTE. --skipgnokiicheck, -K Skip the test of the presence of binary 'gnokii'. (It must be somewhere in your $PATH). It allows you to try this script program, even if you don't have 'gnokii' already. ;) --smsset, --setsms Allows you to preset a SMS message from STDIN. (pipe or input redirection). This message will be proposed on the 'SMS message' field during the program input cycle. --help, -h, /h display this help and exit --version, -V output version information and exit" NOTE: If you require to pickup number from phone's memory (or from SIM card), for the first time, it anyway reads phonebook from your mobile phone. (It may take a while... please, be patient ;-) BUGS
None reported. AUTHOR
Sendsms was written by Gabriele Zappi - Rimini <gzappi@inwind.it>. This manual page was written by Pawel Kot. COPYING
This program is distributed under the GNU Public License. SEE ALSO
gnokii Pawel Kot August 29, 2003 sendsms(1)
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