FemtoBeacon

I have ordered the steel stencil, and have the panelized PCBs. The stencil was about $150 USD, but necessary due to the fine pitch footprint of the parts. Stay tuned!

FemtoBeacon test - Checking UART and LwMesh "Peer2Peer" example. See femtoIO/samr21-xplained-pro github repo for code (has apps/Peer2Peer example)

Looks like the RF is working! I need to test a bit more before signing off on the design, and ordering the PCBs.

I'm attempting to get UART Serial data to show up in my serial terminal. I've modified an LwMesh Peer2Peer example to use SERCOM1 at 38400 baud, and have pins PA16 as Tx, PA17 as Rx to an FT230X board called a MicroFTX (jim.sh/ftx)

Currently running into issues, as I cant seem to get any data. Hooking it up to my Rigol oscilloscope in the hopes of seeing whats up w/ the signals.

EDIT: Thanks to Atmel's awesome support, the final change was determined to simply change PMUX index from 2 to 8. We now have UART serial!

Good news! Testing with a plain FemtoUSB (ARM Cortex M0+ ATSAMD21E18A), the Arduino IDE 1.6.5 appears to load sketches just fine when selecting the "Arduino Zero (native port)" option. Since the FemtoBeacon ATSAMR21E18A is essentially the same chip with an AT86RF233 RF chip, and since Arduino libraries for this RF chip exist, we *may* have the groundwork already in place to be 100% Arduino Compatible in the next release of the IDE (1.6.6). We submitted a merge request (accepted) a few days ago to have the BOSSA utility recognize the ATSAMR21E18A, so if the next IDE release also updates the version of BOSSA, the FemtoBeacon should just work. I'll test with the nightly IDE builds and report back. Stay tuned! :-)

Sincerely,
Alex Albino
CTO - Femto.io

Good news, everyone! The kickstarter campaign for the first run of (beta) FemtoBeacons was a success!

I have (mostly) completed the C Header file for the MPU-9250 sensor (9-DoF) and am filling in the C routines.

Additionally, I've begun work on an example Peer2Peer project using Atmel's Lightweight Mesh stack. This is to test the current antenna design and assert we can transmit with it! :-)

The femtoio/MPU9250 repo has the MPU-9250 source code, while the femtoio/femto-beacon repo (develop branch) has current progress on examples and design files.

- Alex Albino

CTO - http://Femto.io

For the latest (most up to date) list of components used, see our Bill of Materials on octopart.

https://octopart.com/bom-lookup/fl3MTjGD

Current (beta) designs and examples for the FemtoBeacon can now be viewed in the 'develop' branch of the FemtoBeacon github repository: https://github.com/femtoio/femto-beacon

18th of May, 2015 - Slowly filling in the MPU9250 library (C/C++). I need to implement a read/write adapter, so we can work with I2C or SPI. https://github.com/femtoio/MPU9250