T
Terry
- Jan 1, 1970
- 0
Hacked a motion detector for a Halloween prop. Shows 24 volts when I
measure the two wires I soldered on the detector circuit board. When
the detector detects someone, the voltage drops to zero.
Put together a standard non-retriggerable timer circuit using a diode
off the second output to control the non-triggerable duration per
responses to a previous message. Running this circuit at 9 volts.
When I fasten the positive from the detector directly to the triggers
and the negative to the common ground of my circuit, it reads 24 volts
until something detected and then drops to only 7.5 volts. This is not
enough to set off the timers.
Not being an electrical genius, can someone explain to me why the drop
to 7.5 volts instead of 0 when I hook the detector to my circuit?
What's the best way to hook up this detector to the circuit to trigger
the timers?
Thank you for any help.
Terry
measure the two wires I soldered on the detector circuit board. When
the detector detects someone, the voltage drops to zero.
Put together a standard non-retriggerable timer circuit using a diode
off the second output to control the non-triggerable duration per
responses to a previous message. Running this circuit at 9 volts.
When I fasten the positive from the detector directly to the triggers
and the negative to the common ground of my circuit, it reads 24 volts
until something detected and then drops to only 7.5 volts. This is not
enough to set off the timers.
Not being an electrical genius, can someone explain to me why the drop
to 7.5 volts instead of 0 when I hook the detector to my circuit?
What's the best way to hook up this detector to the circuit to trigger
the timers?
Thank you for any help.
Terry