Adafruit Holiday Shipping Deadlines 2018: Attention! Place all UPS 3 Day orders by 11am ET Wednesday 12/13/2018
0

Roll Your Own Garmin Smart Watch App

garmin-sdk-5

Garmin provides a free SDK (Software Development Kit) to make extending the functionality of their devices accessible to everyone. Garmin produces a lot of wrist based fitness trackers that include a GPS, accelerometer, gyro, temperature and optical heart rate sensor. Today there are limited options for sending real-time biometric data over to a Raspberry Pi or an Arduino, but with the provided development tools things are looking up.

garmin-sdk-3

Garmin’s SDK installs easily on OS/X and Windows and can even be emulated using Wine on Linux. It is easy to get lost in the weeds following the developers site instructions as they spend a lot of time setting up Eclipse or Xcode environments. The CLI tools are easy enough to interface with directly. These are the steps I used to install the SDK on OS/X, build sample code, execute the sample code in a simulator and run natively on a Garmin Vivoactive HR watch.

garmin-sdk-2

Downlaod the 2.2.0 Beta SDK 

  • $ mkdir garmin-sdk-beta-2.2.0
  • $ mv connectiq-sdk-mac-2.2.0.zip garmin-sdk-beta-2.2.0/
  • $ cd garmin-sdk-beta-2.2.0/
  • $ unzip connectiq-sdk-mac-2.2.0.zip
  • $ export PATH=$PATH:$HOME/Downloads/garmin-sdk-beta-2.2.0/bin

Generate a Key

  • $ cd ~/Downloads/garmin-sdk-beta-2.2.0
  • $ openssl genrsa -out developer_key.pem 4096
  • $ openssl pkcs8 -topk8 -inform PEM -outform DER -in developer_key.pem -out developer_key.der -nocrypt

Build Sensor Example

  • $ monkeyc -o Sensor.prg -y ~/Downloads/garmin-sdk-beta-2.2.0/developer_key.der -m ../manifest.xml -z ../resources/resources.xml -z ../resources/strings.xml -z ../resources/bitmaps.xml Sensor.mc Graph.mc

Simulate Code

  • $ connectiq &
  • $ monkeydo Sensor.prg vivoactive_hr

Copy to Garmin

  • connect watch via USB
  • drop PRG file into /Volumes/GARMIN/GARMIN/APPS

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 8,700+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – Python on Microcontrollers is here!

Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/

Maker Business — Japanese word working and more in December’s issue of HackSpace magazine!

Wearables — Solder-less magic

Electronics — = != ==.

Biohacking — Finding Bliss with Anandamide

Python for Microcontrollers — sysfs is dead! long live libgpiod! libgpiod for linux & Python running hardware @circuitpython @micropython @ThePSF #Python @Adafruit #Adafruit

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.

Filed under: biohacking —
Tags: , , , , , , , , , , , , — by Mikey Sklar

Comments Off on Roll Your Own Garmin Smart Watch App