Dipole Antenna Elixir Project! 📻

• Listen to a Flex Radio TCP stream
• Parse VITA49
• Based on antenna/frequency turn on/off relay switch via Raspberry Pi GPIO
• Relay switch dictate dipole mode on antenna

This is for my Dad 🙏

We are both HAM radio operators 🎉

1. FLEX_IP known IP address of the Flex Radio
2. FLEX_RPI if the server is running on a RPI with GPIO

• You do not need to define the FLEX_RPI var but you can set it to 0 or 1.
• 1 being that GPIO is on the system and the wiringPi gpio CLI is available for use.
• 0 means no, and not defining it means no as well.

Example use on a rpi:

FLEX_IP=10.0.0.192 FLEX_RPI=1 mix run --no-halt

• Unexports all pins
• Exports mode out for BCM pin 17

• Opens TCP :gen_tcp connection to flex
• Send a recieve all msg to flex with :gen_tcp (need to CLRF msg string)
• Recursive loop recv with :gen_tcp

• Parses recv msg to check for antenna and frequencies
• Based on antenna/frequency turn on/off relay switch via Raspberry Pi GPIO

Forever!

If running on 10.0.0.230

curl 10.230:4000/api/?cmd=on
curl 10.230:4000/api/?cmd=off
curl 10.230:4000/api/?cmd=unexport
curl 10.230:4000/api/?cmd=export