Advices required for Soap dispenser / sanitizer code

[Ioannis]

I can only guess that it is not a clear 0-5 volt state.

And that is why he simulates the trigger pulse with the two resistors. All the way wrong approach...

Ioannis

[fratello]

Thank you for the answers. The 2 resistors and the button simulate a photodiode, whose resistance increases when it is no longer illuminated by the IR emitting diode (communication is interrupted by the hand interposed on the route). There is NO button !

[peterdeco1]

At work, we make a product that detects hand motion to light up a string of LED's. You can use a FET to drive the soap pump motor. We use the ADC in a 12F675 to detect fluctuations from a 5528 LDR. ADC has 47K pull down resistor, other side of LDR to B+.

[richard]

IF you use the comparator its as simple as this.it won't re-arm itself until hand is removed

#config
   __config _INTRC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_ON & _MCLRE_OFF & _BODEN_ON 
#endconfig
DEFINE OSCCAL_1K 1
DEFINE OSC  4

CMCON    = %00001110
TRISIO   = %111011

vrcon=$88    ;about vcc on 2
 ANSEL=1
tmp var byte
Main: 
intcon=$40
pir1=0
PIE1=8
asm   
 SLEEP
 nop
endasm 
if  CMCON.6 then
gpio.2=1
pause 1000
gpio.2=0
endif
goto main
END

[fratello]

Thank you very much ! I think this is what I need ! I will tested and post the results. Regards !