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#Arduino usb host shield amazon how to
#Arduino usb host shield amazon serial
#Arduino usb host shield amazon manual
#Arduino usb host shield amazon software

#Arduino usb host shield amazon serial

To test if everything is working properly, you can test the shield by sending AT commands from the Arduino IDE serial monitor.

#Arduino usb host shield amazon manual

call to a number: ATDP+ PHONE_NUMBER(in international format)įor more information, you can check the SIM900 AT commands manual here.

read all SMS from the inbox: AT+CMGR=ALL\r.

read the second SMS from the inbox: AT+CMGR=2\r.

read the first SMS from the inbox: AT+CMGR=1\r.

send SMS to a number: AT+CMGS= PHONE_NUMBER(in international format).

set the SIM900 to text mode: AT+CMGF=1\r.

#Arduino usb host shield amazon how to

See how to do that in the Automatically turn on the shield section, after the code examples.ħ) You can test if the shield is working properly by sending AT commands from the Arduino IDE using an FTDI programmer – as we’ll shown later in this guide. Note: you can automatically turn on the shield via software. When it finds the network, the NetLight LED will start blinking every three seconds. Make sure you select the external power source with the toggle switch next to the DC jack.ĥ) To power up/down the shield press the power key for about 2 seconds.Ħ) Then, the Status LED will light up and the NetLight LED will blink every 800 ms until it finds the network.

#Arduino usb host shield amazon software

2) Make sure the antenna is well connected.ģ) On the serial port select, make sure the jumper cap is connected as shown in figure below to use software serial.Ĥ) Power the shield using an external 5V power supply. The figure below shows the shield most important components on the board that you need to pay attention to.ġ) Insert the SIM card into the SIM card holder – make sure you’ve read the preliminary steps in the previous section. It has a holder for the SIM card and for a 3V CR1220 battery for the RTC (real time clock). The figure below shows the back of the shield. Make sure you select the model with 5V and 2A. You can find the right power adapter for this shield here. It can also be powered with 9V 1A, or 12V 1A. To power up the shield, it is advisable to use a 5V power supply that can provide 2A as the one shown below. Next to the toggle switch on the board, there is an arrow indicating the toggle position to use an external power supply – move the toggle switch to use the external power supply as shown above. Next to the power jack there is a toggle switch to select the power source. The shield has a DC socket for power as shown in figure below. In my case, I needed to go through: Settings > Advanced Settings > Security > SIM lock and turn off the lock sim card with pin. The easiest way to do this, is to insert the SIM card in your smartphone and turn off the pin lock in the phone security settings. To use the SIM card with the shield, you need to turn off the pin lock. If you have micro or nano you may consider getting a SIM card size adapter. The shield uses the original SIM card size, not micro or nano. In this tutorial we’re using a prepaid plan with unlimited SMS. Otherwise, if something goes wrong, you may need to pay a huge bill for hundreds of SMS text messages sent by mistake.

We recommend that you use a prepaid plan or a plan with unlimited SMS for testing purposes. GSM coverageĮnsure you have coverage on a GSM 850 MHz, GSM 900 MHz, DCS 1800 MHz or PCS 1900 MHz network. You can use the preceding links or go directly to /tools to find all the parts for your projects at the best price!īefore getting started with your SIM900 GSM GPRS module, you need to consider some aspects about the SIM card and the shield power supply. You can check the SIM900 GSM GPRS shield on Maker Advisor and find the best price.

Has microphone and headphone jacks for phone calls.

Supports RTC (real time clock) – it has a holder for a 3V CR1220 battery at the back.

Quad Band: 850 900 18 MHZ, so it should work in all countries with GSM (2G) networks.

It has 12 GPIOs, 2 PWMs and buit-in ADC of the SIM900 module.

Allows you to send SMS, MMS, GPRS and Audio via UART using AT commands.

Here’s some of the most important features of the shield:

Receive sensor data – send periodic SMS to your cell phone with daily weather data.

Receive notifications – send SMS to your cell phone if movement is detected in your house.

Remote control of electronic appliances – sending an SMS to turn something on.

Its capabilities make it perfect for projects with Arduino like:

Connect to the Internet over GPRS network.

The GSM GPRS shield is particularly useful as it allows to: GPRS is a mobile service on the 2G and 3G cellular communication. GPRS stands for General Packet Radio Service. GSM stands for Global System for Mobile Communications and is the global standard for mobile communications. The SIM900 GSM GPRS Shield is shown in figure below.

Making and answering phone calls – example.

Learn how to send and receive SMS and how to make and receive phone calls with Arduino. This post is a complete guide to the SIM900 GSM GPRS Shield with the Arduino.