ATSAMR34J18 LoRA System-in-Package (SiP) based RF module and Adafrut Feather form-factor breakout board.Designed by Makertronika Labs, Ships from Germany
What is it? This is a small 0.9 in. x 2 in. ATSAMR34J18 LoRA System-in-Package (SiP) based development board in Adafruit Feather form-factor. All the design and fabrication files can be found on my...Read More…
ATSAMR34J18 LoRa SiP is deigned as a separate RF module and is soldered on top of this breakout board (unsoldered version of the kit can be purchased). The RF module consists of all the essential components for the RF matching, RF switching and power filtering parts.
The Feather style breakout board comes in a breadboard friendly layout and it contains following items.
About a year ago when this SiP was released I was pretty excited to work on it. I then purchased the official SAMR34 Xplained Pro Evaluation Kit. It's a great kit with on board embedded debugger, but it is not very suitable for developing small and low-power LoRa nodes.
Furthermore, SAMR34 comes in a 6x6 mm BGA package and requires handful of carefully selected RF components to work with, which renders it as a not so hobbyist friendly. By designing a small RF module around it and publishing the design files, anyone who needs can incorporate the RF module in their design (as long as it's not for commercial purposes). All the GPIO lines have been broken out and for low-power operations VCC to the RF-switch can also be controlled using the dedicated GPIO line.
I made the board small, low-power and as versatile as I could for IoT application development. Most of the Adafruit Feather Wings can be used with this board. It is breadboard friendly but can be made into a portable, battery-powered device for solving real world problems.
Some current consumption results for the TinyLoRa RF module @3.3V input.
Some more measurement figures for the breakout board @4.0V LiPo battery (w/o TinyLoRa module).
If you plan to use Atmel Studio 7 then please follow this installation instructions that I put together to correctly setup the ASF v3 (Atmel-Software-Framework) development environment. Unfortunately ASF v4 with ATMEL START is currently not supported for SAMR34 devices.
The board can be flahsed using an ATMEL-ICE programmer/debugger or an Embedded Debugger in External-Target mode.
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DHL Germany: XS Packet
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