RAKwireless Link.ONE is an all-in-one LPWAN development kit programmable with the Arduino IDE and based on nRF52840 Cortex-M4F 2.4 GHz multi-protocol wireless microcontroller, Semtech SX1262 LoRa RF transceiver, and Quectel BG77 LTE-M and NB-IoT module and comprised of components from the company’s WisBlock IoT prototyping platform.
Besides the WisBlock modules, the kit includes everything to get started with four antennas for LTE-IoT, LoRaWAN, GNSS, and Bluetooth connectivity, a USB cable for power and programming, and a Monogoto SIM card with global coverage and 500MB of data valid for 10 years.
Link.ONE hardware specifications:
- RAK19007 WisBlock base board with USB connector and Li-ion charger
- RAK4631 WisBlock core module with
- Nordic Semiconductor nRF52840 32-bit Arm Cortex-M4F microcontroller @ 64 MHz with 1 MB Flash, 256 KB RAM, Bluetooth Low Energy 5.0 protocol stack
- Semtech SX1262 LoRa/LoRaWAN RF transceiver with LoRaWAN 1.0.2 protocol stack (supports Class A & C), global coverage support: RU864, IN865, EU868, US915, AU915, KR920, AS923
- I/Os – I2C, SPI, analog inputs, digital inputs and outputs
- Internal LoRaWAN and BLE antenna on the mounting plate
- RAK5860 Wisblock interface module with
- Quectel BG77 NB-IoT (Cat NB2), LTE-M (Cat M1), and GNSS module connected over UART to the nRF52840 MCU
- Up to of 588Kbps downlink, and 1,119Kbps uplink
- IPEX connectors for external LTE and GPS antennas; a 3dBi external LTE antenna is provided in the kit
- Nano SIM and ESIM options
- Optional “Unify” IP65 enclosure – 100x75x38 mm
Ken YU, RAKwireless CEO, told CNX Software the reason for creating the Link.ONE devkit and potential use cases:
… we discovered many developers like to use LoRa/LoRaWAN and Cellular in a single product, especially for the industrial IoT. The use case might include
Use case 1:You can set LoRaWAN as primary and Cellular NB-IoT as secondary , or you can set Cellular as primary and LoRaWAN as secondary
Use case 2: you can use Cellular as backhaul, but use LoRa as P2P to wake up devices
Use case 3: equipping every device with cellular modem is too expensive (each device needs SIM card) so multiple sensors share one cellular modem by sending data in LoRa P2P
The documentation provides more details about the hardware, instructions to assemble the kit, and instructions to get started with the Arduino IDE and the RAKwireless BSP for the Arduino Board Manager.
RAKwireless Link.ONE all-in-one LPWAN development kit can be purchased for as low as $56, but that’s without the Unify Enclosure, and if you’d like the IP65 enclosure, the total price for the kit is $94.
Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.