Help with PIR Light circuit

[pundabuyer]

Hi guys!

I'm a total noob to this but am looking for some help to see if I can change this light. It's an outdoor pir light with adjustment for time, lux and sensitivity.

I want to change the circuit so it comes on constantly, when the lux is low outside and go off at dawn. Basically I'd like to remove the timer and sensitivity element. They look like variable resistors I have removed the timer resistor in the image attached,

After removal the light stays on constantly but doesn't react to lux, any help would be fab!

Andy

 

[Alec_t]

Welcome to EP!
You would have to reverse-engineer the circuit to know how it could be modified. I doubt the schematic is publically available (but give Google a try if you have the board's serial number/ID).

 

[Colin Mitchell]

Remove the timer pot.

 

[Bluejets]

Do not know what type of sensor you have BUT many of the China versions are able to do just that.
Operation is by the line control switch.
Turn on and leave on = automatic (timer). When the control switch is operated it first switches the light on and after a settling time the light goes out and the unit is on auto.
Turn off and back on again within 2 seconds - manual (on constantly)
It does however, bypass the light sensor BUT you could use a small timer that turns off then back on again after dawn.
Or just use a daylight switch.

 

[Colin Mitchell]

JUST REMOVE THE TIMER POT.