It should list the port that your Arduino board is connected to. On the AT Command Tester, press the 'Find Ports' button. Make sure that only the 'PWR' LED is turned on red. Press the 'RST' button on the SIM908 shield. It will show /dev/ttyUSB2 if it exists.AT Command Tester is an online tool for testing AT commands and other module features such as data call, voice call, HTTP, network registration, SMS, Phonebook, signal quality, SIM interface, device info etc.ĪT Command Tester can be used with 2G Modules (GPRS/EDGE/1x) or 3G Modules (HSDPA/HSPA/EVDO) or 4G modules (LTE) How to use AT Command Tester with the GPRS ShieldĪT Command Tester need to communicate directly with the SIM908 module.ĭownload the sketch under the section 'How to drive the GSM Mode via USB port' from above to you arduino board. Run the command below on Raspberry Pi to check availability of HAT.
:max_bytes(150000):strip_icc()/001_linux-which-command-4062680-5be4c1cfc9e77c0051b0761a.png "At Command Tester Software")
Ensure the Maxis SIM card is inserted and secured on the HAT.
Plug the NB-IoT HAT into Raspberry Pi Board using USB. The following steps show how to establish Internet connection with Raspberry Pi. NB-IoT HAT offers PPP (Point-to-Point Protocol) for us to connect Raspberry Pi to Internet easily. Run Ctrl-a then type :quit to quit the screen. Run Ctrl-a then Ctrl-d to minimise the screen.
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