RAKWireless RAK4260 is a Tiny LoRAWAN Module based on Microchip SAMR34 LoRa SiP

18 October, 2019

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Rakwireless has just announced a new module part of their LPWAN family: RAK4260 LoRaWAN module based on Microchip ATSAMR34J18B LoRa SiP and at just 15x15x1.2 mm, one of the smallest LoRaWAN modules in the market.

The new module is cheaper than the company’s earlier RAK811 module and consumes less power at just 790 nA in sleep mode. The company also provides a RAK4260 evaluation board with easy access to GPIOs and serial interfaces.

Key Specifications:

High quality Low power LoRa® device (Microchip ATSAMR34J18 SiP)
Fully supported 862 to 1020 MHz frequency coverage (all LoRaWAN bands)
High level of accuracy and stability (32MHz TXCO)
Max Tx Power: 20dBm; Max Sensitivity: -148dBm; Rx Current: 17mA (typical)
Rich selection of interfaces: I2C, SPI, ADC, UART, GPIOs
Small form factor: 6×6 mm compact BGA package

Specifications:

SiP – Microchip ATSAMR34J18 SiP with SAM L21 Arm Cortex M0+ MCU @ 48 MHz, up to 40 KB RAM, up to 256 KB Flash
LoRa Connectivity
- Frequency Range – 862 to 1020 MHz
- High level of accuracy and stability (32MHz TXCO)
- Max Tx Power: 20dBm; Max Sensitivity: -148dBm; Rx Current: 17mA (typical)
- Compliant with LoRaWan 1.0.2
Expansion – Castellated holes with I2C, SPI, ADC, UART, GPIOs
Power Consumption
- Low RX current of 13.6mA
- 790 nA in sleep mode
Dimensions – 15×15 mm

RAK4260 Evaluation Board

The evaluation board is based on RAK5005 carrier board and RAK4261 intermediate board which has RAK4260 soldered to it.

There aren’t any details about the board by we can see three power options with micro USB port, 2-pin battery header, and 2-pin solar panel header. There are various expansion headers as well as and connectors for Wisblock add-on modules.

Documentation and Software

Documentation is still work in progress, but you’ll find a getting started guide on the documentation page explaining how to flash the firmware, and configure the board with The Things Network (TTN). The demo firmware is based on Microchip SDK, and you’ll find the source code on Github.

Availability and Pricing

Both the module and evaluation board are available on Aliexpress, with a pack of 50 modules selling for $440 (or $8.80 per unit), and the EVB4260 EVB going for $25 plus shipping.

More information may eventually be available on the product page.

via www.cnx-software.com

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