Hello AAC forum,
Started this project using PIR sensors to trigger a 555 timer that turns on LEDs for twenty seconds for a walker on a staircase.
But then the concept of directionality popped up and it was decided that the system
should operate a head of the walker. So the LEDs come on below the walker
if she is going down and above the walker if she is going up. So the simple
555 approach would not allow that complexity.
So the Arduino was programmed to if say, S2 is triggered and L1s are on then
L2s come on (going up). And conversely, if S2 is triggered and L2s are on then L1s are
turned on (going down).
As usual the design, the programming, even the PCBs are not as difficult as the
wiring and construction of the system to scale, as a model.
The schematic is pretty straight forward.
So to keep from getting lost in wiring and construction a diagram was drawn.
However my buddy says that the wiring in this diagram will not work because the voltage, the +5v power,
is wired in series and must have a direct connection back to the power supply. In fact, he says that only
the LEDs operated by S6, L51 and L52 will come on.
So to explain what he meant he drew this diagram.
And so the question:
Will the wiring shown in the diagram dated 200526 work?
Or is the direct connection shown in the diagram revised 200528 necessary
to have a working circuit?
Thanks.
Allen in Dallas
Started this project using PIR sensors to trigger a 555 timer that turns on LEDs for twenty seconds for a walker on a staircase.
But then the concept of directionality popped up and it was decided that the system
should operate a head of the walker. So the LEDs come on below the walker
if she is going down and above the walker if she is going up. So the simple
555 approach would not allow that complexity.
So the Arduino was programmed to if say, S2 is triggered and L1s are on then
L2s come on (going up). And conversely, if S2 is triggered and L2s are on then L1s are
turned on (going down).
As usual the design, the programming, even the PCBs are not as difficult as the
wiring and construction of the system to scale, as a model.
The schematic is pretty straight forward.
So to keep from getting lost in wiring and construction a diagram was drawn.
However my buddy says that the wiring in this diagram will not work because the voltage, the +5v power,
is wired in series and must have a direct connection back to the power supply. In fact, he says that only
the LEDs operated by S6, L51 and L52 will come on.
So to explain what he meant he drew this diagram.
And so the question:
Will the wiring shown in the diagram dated 200526 work?
Or is the direct connection shown in the diagram revised 200528 necessary
to have a working circuit?
Thanks.
Allen in Dallas