Thursday, July 11, 2013

Propeller Simple Spin Board

Propeller Simple Spin Board
THE MOST SIMPLE PROPELLER BOARD
PROPELLER
SIMPLE SPIN BOARD   PART 1
Perhaps the most simple design for a complete Propeller microntroller computer, the Propeller Simple Spin Board can be used to quickly write and test Spin programs.
Simple Spin Board Wiring

ASSEMBLY
Assembles in 5 minutes using a solderless breadboard. This circuit is more simple than what's shown in the Parallax Propeller Education Kit. Parts include a Propeller chip and label, LED and hookup wire, two decoupling capacitors, and a couple AA batteries in a holder. 

NO THIS AND NO THAT
The program is fed into the chip's RAM so no EEPROM is needed. The 5V LED runs on 3 volts and no dropping resistor is required. Software runs under RC Fast and RC enhancements so no crystal is needed. Batteries are used so no power supply components are needed.

THE BOARD
Stuff is mounted on one third of a Parallax breadboard from a Propeller Education Kit. Wiring is followed using the photo, no schematic needed.

 EXTRAS
Extras include red and green colored stick pins for measuring at various points throughout the circuit. The simple battery holder has a lever action on/off switch.

 TEST PROGRAM
No project is complete without a test program. This simple Spin program will flash the LED on pin 15.

 pub main
dira[15] :=1
repeat
 outa[15] :=1
  waitcnt(clkfreq/2 + cnt)
  outa[15] := 0
  waitcnt(clkfreq/2 + cnt)

 PARTS LIST
01 - Propeller Chip P8x32a-d40
01 - Propeller Chip Printed Label
01 - Parallax Prop Plug
01 - 4 Pin Connector
01 - 5V Red LED
02 - .1 uf Decoupling Capacitor
02 - Stick Pin (Red & Green)
01 - Set of Jumper Wires 
01 - Battery Holder with Switch
02 - AA Battery
1/3 Breadboard

PROPELLER PARTS FROM PARALLAX
http://www.parallax.com/PropellerEducationKit/tabid/377/Default.aspx



PROJECT NOW APPEARING AT PARALLAX
http://forums.parallax.com/showthread.php/149069-Propeller-Simple-Spin-Board

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