LTEm1
The LTEm1 is the original LooUQ cellular device for low-power IoT communications combining network and GNSS location functionality in a small embedded system form-factor. It works seamlessly with popular IoT development boards and is supported by the LooUQ LTEmC open-source communications driver.
LTEm2
Same form-factor as the original LTEm1. Lower cost without simultaneous cellular/GNSS functions. The LTEm2 is powered by the Quectel BG95-M3 with full support for LPWAN protocols: CAT-M1, NB-IOT, and EGPRS.
Features
Extensive application protocol support in firmware, including HTTP(S), MQTT(S), Sockets (UDP/TCP/SSL/TLS)
Persistent file system storage
Fully supported by LooUQ’s LTEmC software driver
LTEm3F
Coming in Summer 2023. Watch for details or sign up for updates. The LTEm3F will likely show up on one of the maker crowd-sourcing sites first, followed shortly after on the LooUQ Store here.
The LTEm3F takes a new shape from previous LooUQ LTE modems; it is a Feather form factor device. The Feather is the shape that Adafruit made famous, but so many companies have adopted for their products. This makes adding the LTEm3F to your project as easy as stacking or non-stacking headers.
The LTEm3F has LTE-M, NB-IOT, and GNSS in the radio department. There are 6 GPIO, 2 ADC exposed on the I/O connector next to the antenna jacks. And… 6 MB of persistent memory organized into a file system.
The images above show the prototype device being tested in our lab on the left; the right image is a production STEP model. The production model is slightly longer that the typical Feather MCU board (but compliant with the form’s specification published by Adafruit). The I/O was moved from the center of the board (vertical connector) to the end to make connections easier and eliminate space requirements above the LTEm3F.
Start planning your LTEm3F project today. Download the STEP model here, you can use the online Autodesk STEP viewer here.
LTEmC
LTEmC is LooUQ’s device software for LTEm series modems. All of the LTEm modems are supported with the same library. The discovery of the device and the features available is automatically determined at device initialization. LTEmC is written with portability in mind using C99 language standards and small memory footprint is a key design consideration. Dynamic memory allocation is limited to library initialization, with no free/allocate cycling. Dynamic memory allocation can be completely eliminated with adjustments to your project’s linking directives.
LTEmC is freely distributed as a GPL-3.0 open-source library. Proprietary licenses are available, please contact LooUQ for more information.