PICAXE
PICAXE
Pulsed IR Detector
symbol irled = 2 'pin 5
symbol irsensor
= Pin4 'pin 3
symbol Buzzer = 1 'pin 6
Top:
pwmout irled, 25, 52 ‘PWM on @ 38.4kHz
if irsensor =0 then goto SawPulse
low Buzzer
goto Top:
SawPulse: 'check
for two pulses together
if irsensor=1 then Top: 'must see two pulses
high Buzzer
goto Top: