‰  NOW 20 WPM  ‰  TEXT IS FROM OCTOBER 2018  QST  PAGE 35 ‰

LAYOUT OF CHASSIS JACKS FOR THE VARIOUS CABLES SEE THE LEAD PHOTO.  WITH 32
RELAYS POSSESSING THREE CONNECTORS EACH, ALONG WITH 32 DIGITAL LINES FROM
THE COMPUTER TO THE RELAY BOARDS IF ALL RELAYS ARE CONNECTED, THERE WILL BE
QUITE A BIT OF WIRE IN THE CASE.  I USED 20 AWG WIRE TO CONNECT THE CHASSIS
JACKS TO THE RELAYS.  THE ARDUINO PINS ARE CONNECTED TO THE RELAY BOARD
USING MALE TO FEMALE PATCH CABLES.  THE TWO RELAY BOARDS ARE STACKED ON TOP
OF EACH OTHER WITH 1 INCH NYLON SPACERS.  THE ARDUINO COMPUTER IS MOUNTED
ON THE SIDE OF THE CASE USING BRASS STANDOFF NUTS.  USING A PLASTIC CASE
MAKES HOLE FORMING EASY FOR THE CONNECTORS AND THE ARDUINO USB PORT.  A
NICE FEATURE OF THE SAINSMART RELAY BOARD IS THE PRESENCE OF LEDS FOR EACH
RELAY TO INDICATE ITS STATUS.  THIS FEATURE ASSISTS TREMENDOUSLY WITH
‰  END OF 20 WPM TEXT  ‰  QST DE W1AW  ƒ