Arduino-RFM69HCW-GPS/README.md

# Arduino-RFM69HCW-GPS

I stand on the shoulder of giants.

My code/sketches are built on previously shared code by three other contributers.  They are noted at the top at each arduino sketch.

Supported board I created and shared at:  https://oshpark.com/shared_projects/vCLw90ht   I drive everything, promini33, rfm69hcw and GPS,  from the pro-mini 3.3v requlator with success from a 9vdc battery, but cannot not recommend this.  I'm using a Ublox NEO-6 GPS Module with great success.  Take care of the ceramic antenna.  It is a brick dangling on a thread and when the center conductor breaks fails to work.  I've repaird mine by stripping back the thin coax and making a very tiny light weight and high gain 1.5 GHz ground plane antenna.

These sketches may also work with the adafruit feather M0 with the noted pin changes in software.  I do not have one and could not test.

Three modes supported, Morse, Feld Hell, and RTTY 5N1 170Hz.

Three sketches per mode.  1) a keyboard input mode, a raw beacon mode, and one that transmits GPS telemetry.

For Feld Hell and more I'm using modulation type for register 0x02 = 0x34 of which bit 4 is undefined but works!  Need to flix/clarify this.  Probably should be 0x48.  I need to test.

Good luck.  Enjoy.

73 KC1ENN aka SnkMtn000