lpwan News - Page 16 of 23 - CNX Software

August 23, 2018 by Jean-Luc Aufranc (CNXSoft) - No Comments

Samsung Introduces Exynos i S111 NB-IoT Modem + GNSS Chip

Samsung has just announced their first NB-IoT solution with Exynos i S111 chipset with a single chip integrating an NB-IoT capable LTE modem, RF IC, an on-chip security sub-system, and a PUF (Physical Unclonable Function) security solution along with various components such as CPU, and SRAM. The chip apparently also integrates GNSS hardware with support for GPS, Galileo, etc… Exynos i S111 specifications: CPU – Arm Cortex-M7 @ 200MHz On-chip Memory – 512KB SRAM Modem – LTE Release 14 NB-IoT GNSS – GPS, Galileo, GLONASS, BeiDou Interfaces / Peripherals – USI, UART, I2C, GPIO, eSIM I/F, SDIO (Host), QSPI(Single/Dual/Quad IO mode), SMC Security – eFuse, AES, SHA-2, PKA, Secure Storage, Security Sub-System, PUF The chip is also said to features Samsung’s “advanced algorithms for wider coverage”. Many NB-IoT GPS trackers currently implement a two modules solution, so the latest Exynos chip should enable more compact designs. Samsung did not publish […]

August 22, 2018 by Jean-Luc Aufranc (CNXSoft) - 3 Comments

n-fuse LoRaWAN Concentrator mini PCIe Card Comes with either SX1301 or SX1308 Chip

Most gateways are based on Semtech SX1301 chip, but the company unveiled a SX1308 chip for picocell gateways back in 2016 that’s supposed to be cheaper and used indoors. Designs have been slow to come to market, but a few have been launched recently including n-fuse LRWCCx-MPCIE LoRaWAN concentrator mini PCIe card that comes with either SX1301 or SX1308 chip, and is compatible with Semtech’s Pico Gateway design. n-fuse LRWCCx-MPCIE key features & specifications: LoRa Connectivity SX1301/ SX1308 digital base band processor with dual SX1257 Tx/Rx front-ends Output power level up to 23 dBm u.FL connector (50 Ω impedance) for external antenna 868 MHz model Frequency Range – 863 to 870 MHz Sensitivity – Up to -124 dBm at SF7 (BW 125 KHz), up to -138 dBm at SF12 (BW 125 KHz) 915 MHz model Frequency Range – 915 to 928 MHz Sensitivity – Up to -125 dBm at SF7 […]

August 21, 2018August 21, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

How to Make a Cheap Single Channel Gateway with an ESP32 LoRa Board

Actual LoRaWAN gateways based on Semtech SX1301 concentrator can be pretty expensive, and even if you take a LoRa gateway design based on Raspberry Pi for indoor placement or experimentation, price is still around $200. A much cheaper way (~$70) is to use a single channel LoRa gateway, which as the name implies only support one channel, which limits the number of nodes, and forces you to set the nodes at the same frequency as your gateway. Those are not really suitable for commercial offerings, but if you manage your own gateway and nodes that should be usable. If you only plan to implement a network with a dozen nodes or so, you could even use much cheap ESP32 LoRa board like the ESP32 LoRa 1-Channel Gateway sold on Sparkfun for $29.95. Hardware specifications: Connectivity WiFi and Bluetooth 4.2 LE via ESP32-WROOM-32 module with integrated PCB antenna LoRa @ 868 […]

August 12, 2018August 12, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

How to Build an Orange Pi Zero LoRa Gateway

LoRa gateways tend to be fairly expensive, especially because of the radio part, but anything that may help lower the cost is probably welcomed. And one way to to do that is to use dirt cheap boards like Orange Pi Zero as Edzelf did, by combining the low cost Arm Linux board ($15 shipped) with Rak wireless RAK831 concentrator module kit ($143) via a custom cable, and a power supply board. All assembled into a metal case. RAK831 communicates with Orange Pi Zero over an SPI connection. While some other Orange Pi boards are suitable for the project, note that Orange Pi Zero Plus lacks a spare SPI interface, and can’t be used with this particular application. A fan was also added for cooling, a well as a USB serial debug board for debugging purpose, but it can be removed once the gateway is in the field. Software-wise, Edzelf installed […]

July 31, 2018July 31, 2018 by Jean-Luc Aufranc (CNXSoft) - 5 Comments

RAK8213 mini PCIe Card Comes with GNSS, NB-IoT & eMTC Connectivity

After launching their first wireless communication mini PCIe card with RAK833 LoRaWAN gateway card last month, RAK Wireless is back with another mPCIe card that supports GNSS (GPS, GLONASS), as well as cellular IoT connectivity thanks to Quectel BG96 NB-IoT + LTE Cat M1 module. RAK8213 mini PCIe card specifications: Wireless Connectivity Module – Quectel BG96 with LTE Cat. M1 (eMTC), LTE Cat. NB1 (NB-IoT), EGPRS, and GNSS Global bands support FDD-LTE – B1/ B2/ B3/ B4/ B5/ B8/ B12/ B13/ B18/ B19/ B20/ B26/ B28 TDD-LTE – B39 (for Cat M1 only) EGPRS – 850/900/1800/1900Mhz Max Data Rate – Cat M1: 375 kbps (UL/DL); Cat NB1: 32 kbps DK, 70 kbps (UL) micro SIM slot u.FL connectors for cellular and GNSS mPCIe connector with USB 2.0, I2C, UART, and PCM Misc – LEDs for network and power status Dimensions – 51 x 30.1 mm The card can be added […]

July 26, 2018July 27, 2018 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

AS923 LoRa GPS Tracking with MatchX MatchBox Gateway and RAK811 LoRa GPS Tracker Board

Earlier this month, I installed Match MatchBox LoRa outdoor gateway close to the roof, and showed how easy it was easies to setup with MatchX Cloud. Basically, you just register to the cloud, enter the serial number, and the gateway is automatically based on your location. I’m in South East Asia, so the gateway was configured with AS923. I’ve now had time to play with the gateway using Rak Wireless RAK811 LoRa tracker board, and eventually managed to get the tracker location to show up on a map. It was my first experience with LoRaWAN, and I had to learn a lot, and overcome many issues from outdated software development tools, different data formats, and some interoperability issues between all components involved. I’ll document all that in this review, and hopefully it will help others. RAK811 LoRa GPS Tracker Unboxing Before going into LoRa configuration, I’ll show what I got […]

July 15, 2018November 14, 2019 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

MatchX MatchBox LoRa Gateway Setup (for AS923) and Installation

At the end of last year, I received MatchX Matchbox LoRaWAN gateway, but only quickly checked out the hardware, as I was still unclear about regulations in South East Asia, and did not have any nodes to play with. Understanding Regulations and LoRaWAN Frequency Plans Since then, the government published some notifications about the 920-925 MHz band we are supposed to follow here. It’s in Thai language, and I can’t still read/understand it, but I got some translation help, and some key points include: paragraph 5 : for 920-925MHz non-RFID radio equipment (1) max EIRP not more than 4 watts (2) if EIRP < 50mW, no need for any license (3) if EIRP < 500mW, a license is required for importing, selling, and making your own equipment (4), and you must be in accordance with NBTC technical standard. (5) must not interfere with any licensed application. Interfering equipment must be […]

July 6, 2018July 6, 2018 by Jean-Luc Aufranc (CNXSoft) - 10 Comments

Design ESP32 LoRa GPS Tracker Applications with TTGO T-Beam Board

TTGO introduced a small ESP32 LoRa board with OLED display last year that is still selling for around $14 shipped. But the company is now back with a similar board called TTGO T-Beam that does without the display, but adds GPS support, and a 18650 battery holder, so it should be ideally suited for all sorts of LoRa GPS tracking applications. TTGO T-Beam board specifications: SoC – Espressif ESP32 dual core Xtensa LX6 processor with WiFi and Bluetooth Memory – PSRAM Storage – 4MB SPI flash Connectivity 802.11 b/g/n WiFi up to 150 Mbps + Bluetooth 4.2 Classic and LE with “3D antenna” soldered on PCB LoRa 433, 868, and 915 MHz versions with SMA antenna Transmit current – 120 mA @ +20dBm; 90 mA @ +17dBm; 29mA @ +13dBm Receive sensitivity -139dBm with LoRa & 62.5Khz & SF=12 & 146bps -136dBm with LoRa & 125Khz & SF=12 & 293bps […]