Build a flashing, remote controlled electro-pneumatic PEZ Dispenser with semi-auto and full-auto capability.

What you need:
1. Sense of humor
2. 1/2 a brain
3. Get fired from your job for having all of the above.

Step 1: Parts List

What I used:
1. Pneumatic cylinders (1-single acting spring return, 1-double acting)
2. MAC solenoid valves (3 way, 5 way)
3. airbrush propellant
4. 2 transistor (FETs)
5. 38khz IR detector
6. TV remote control
7. Controller board (Basic Stamp or Arduino)
8. LED
9. lever switch

Cylinders are from Clippard.

Step 2: Construction and Operation

Items shown in the picture below, by number:
1. single acting spring return cylinder
2. double acting cylinder
3. lever switch
4. string
5. r/c control horn

Operation:
1. Activate cylinder #1 to pull PEZ head back
2. Control horn depresses switch lever to indicate the weapon is in firing position
3. Activate LED
4. Cycle cylinder #2 to eject one round of ammo...or rectangle...whatever...
5. Turn off LED, release cylinder #1

TV remote causes the output pin of the IR detector to go high. This triggers the BASIC STAMP as indicated in the source code shown in the next step.

Step 3: Basic Stamp (BS2-BOE) Source Code

'***************************************************************************
'* mil-pez.BS2
'* Alan Mollick
'* www.alanmollick.com
'***************************************************************************
' {$STAMP BS2}
' {$PBASIC 2.5}
' {$PORT COM5}

INPUT 0 ' IR detector
OUTPUT 3 ' 3-way solenoid
OUTPUT 4 ' LED
OUTPUT 8 ' 5-way solenoid
INPUT 10 ' head up feedback switch

Main:
PAUSE 5

Hold:
IF (IN0 = 1) THEN Hold ' wait for TV IR signal

HIGH 4 ' LED = on
HIGH 3 ' 3-way solenoid on, head pulled back
PAUSE 50

Hold10:
IF (IN10 = 1) THEN Hold10 ' Stay here until switch (pin 1) = low

PAUSE 10
HIGH 8 ' 5-way solenoid = on
PAUSE 200
LOW 8 ' 5-way solenoid = off
PAUSE 35
LOW 3 ' 3-way solenoid = off
LOW 4 ' LED = off
PAUSE 25

GOTO Main

'***************************************************************************