__  _________     ______________     __  _____   ___  ______
       / / / / __/ _ )___/_  __/_  __/ /    / / / / _ | / _ \/_  __/
      / /_/ /\ \/ _  /___// /   / / / /__  / /_/ / __ |/ , _/ / /
      \____/___/____/    /_/   /_/ /____/  \____/_/ |_/_/|_| /_/


How to use a USB-TTL cable (e.g. Adafruit) on the GPIO.

This can be found easily online, but I keep it here, so I don't need to fire up
a browser.


  1   2       2 = 5v Power       Red --==\\  (optional)
  3   4       4 = 5v Power                \\
  5   6       6 = Ground         Black --==\\
  7   8       8 = BCM 14 (TX)    White --==\|
  9  10      10 = BCM 15 (RX)    Green --==\|
 11  13                                    ||
 13  15            _____                   ||
 15  16           | _ _ |                  ||
 17  18           |_____|                  ||
 19  18          |       |                 ||
 21  22          |       |   .==.         //
 23  24          |       |  //  \\       //
 25  26          |       | //    ||     //
 27  28          \      /  ||    ||    //
 29  30           ^^..^^    \\   //   //
 31  32             ||       \\ //   //
 33  34             \\        ^//====^
 35  36              \=========^
 37  38
 39  40