Bluetooth LE Serial Interface for Elecraft K2

This is a simple project to add a Bluetooth Low Energy (BLE) UART to a Elecraft K2 or any other radio with a proper RS232 interface so that it can interface with logging software.  BLE is the only interface that iOS supports for example.  I use this with RUMlog2go on on iPad.

The PDF file gives details on the wiring.  NOTE Issue 2 just updated with a change to grounding when used with Elecraft K2

I printed it in PETG at 0.15mm layer height so I could have a transparent lid to see the LED.   PLA would also work although harder to get transparency.