‰  NOW 20 WPM  ‰ TEXT IS FROM JANUARY 2017 QST  PAGE 47‰

HOWEVER, AT A PRICE OF 35, ITS TOUGH TO BEAT THE RASPBERRY PI FOR VALUE AND
EASE OF USE.  I USED A COMMERCIALLY AVAILABLE ENCLOSED FRAME 24 V POWER
SUPPLY.  POWER FOR THE LOW VOLTAGE ELECTRONICS IS GENERATED WITH A SMALL DC
TO DC CONVERTER.  IN AN ENTHUSIASTIC REDESIGN, THE POWER SUPPLIES COULD BE
DESIGNED FROM SCRATCH TO SUIT THE PROJECT AT A LOWER COST.  FABRICATION VIA
INTERNET  I WAS ABLE TO DESIGN AN INTRICATE MULTISIDED CIRCUIT BOARD USING
FREE CAD SOFTWARE DOWNLOADED FROM AN INTERNET SHOP THAT SPECIALIZES IN
PROTOTYPE CIRCUIT BOARDS.  WHEN THE LAYOUT WAS COMPLETE AND TRIPLE CHECKED
AGAINST MY SCHEMATIC, A QUICK FILE UPLOAD AND A CREDIT CARD COMPLETED THE
PROCESS.  I USED EXPRESS PCB WWW. EXPRESS PCB. COM, ONE OF SEVERAL
PROTOTYPING SOURCES AVAILABLE ON THE INTERNET.  THE TURNAROUND WAS VERY
‰  END OF 20 WPM TEXT  ‰  QST DE W1AW  ƒ