Jan 30, 2014  We review and test the AT Command Tester software. For more information, please visit http://wp.me/p3LK05-3Rn. Aug 31, 2015  AT Command Tester Tool. August 31, 2015 ~ oakkar7. This is hayes AT command test too for SIMCOM GSM/GPRS modules (tested with SIM90X, SIM300 and SIM800 believed also work). Rocky movie songs. This is very early alpha test release and use at your own risk. If these steps are fine, modem and software are working well. If something is wrong, consult with these.

You can also freely play with AT commands with the example sketch named 'AT_Command_Test.ino'. This sketch allows you to enter AT commands into the serial monitor and is great for seeing the module's responses to different commands!

NOTE: Perhaps an easier method (for Windows users) is to install the Windows drivers detailed in and test AT commands by using the shield's micro USB port instead! When using this sketch make sure the line 'fona.begin(115200);' in setup() has the correct baud rate, otherwise you can't talk to the module to begin with! 115200 is the default so chance are it will work, and if you don't remember if you changed the baud rate try 4800. • Make sure you have 'No line ending' select at the bottom of the serial monitor • The module should turn on by itself, but if you need it later you can type 'ON' and press Enter. Do this if the module was off because you can't communicate with it otherwise! Note that for the SIM7500 it can take about 13s before the PWR LED actually turns on after the PWRKEY pin is pulsed low.

• Test an AT command by entering 'AT'. You should receive an 'OK' from the module. Then try something like 'ATI' to get the module identification number. • To turn off the module, type 'OFF' • To reset the module, press 'RESET' • In case you do anything super funky, type 'FACTORY' to factory reset the module to start from scratch! Please note that this might reset the baud rate to 115200.

• To change the baud rate, type 'BAUD' where is the baud rate. For example, if you want to switch to 4800 baud, enter 'BAUD4800' and you should see it enter an AT command. • You can check the network registration with 'AT+CREG?' What you want to see is '+CREG: 0,1' • Next type 'AT+CPSI?' To see the network you're connected to.

It should be either LTE CAT-M1 or LTE CAT-NB! If it's connected to either of these, you're good to go! • Have fun playing around with the AT commands! For detailed descriptions on each AT command, view the.

If it makes things any easier, AT commands are not case sensitive! When you type the commands it should look something like this (it should say SIM7500 of course, this is just an example): The asterisks (***) indicate debug text and arrows (-->) indicate AT commands being sent to the module. Everything else is responses from the module. Potentially Useful AT Commands You should always check the for more info about the following AT commands!