M
Mike
Guest
I bought a Prius Prime and want to sell my pickup truck.
But I'd still like to be able to trailer stuff from
Home Depot about 3 miles away. I have no plans to go
far or fast.
Rather than digging into the Prius wiring, I thought I
might just create autonomous trailer brake lights.
That would also make the trailer universal without
regard to the towing vehicle light connector.
First thought is too stick an old cellphone, a few
18650 cells and a FET to turn on the LED tail lights
in a small box on the trailer.
Should be able to use the accelerometer in the phone
to send a tone out the headphone jack to turn on the FET.
Having the phone camera watch the car tail light and act accordingly
is too ambitious for a first try.
60 years ago I had a bicycle with a "see-saw" with a ball bearing
that flipped back and forth on acceleration that accomplished
the same thing. I think the trailer bouncing up and down
would make that infeasible here.
Ideas?
But I'd still like to be able to trailer stuff from
Home Depot about 3 miles away. I have no plans to go
far or fast.
Rather than digging into the Prius wiring, I thought I
might just create autonomous trailer brake lights.
That would also make the trailer universal without
regard to the towing vehicle light connector.
First thought is too stick an old cellphone, a few
18650 cells and a FET to turn on the LED tail lights
in a small box on the trailer.
Should be able to use the accelerometer in the phone
to send a tone out the headphone jack to turn on the FET.
Having the phone camera watch the car tail light and act accordingly
is too ambitious for a first try.
60 years ago I had a bicycle with a "see-saw" with a ball bearing
that flipped back and forth on acceleration that accomplished
the same thing. I think the trailer bouncing up and down
would make that infeasible here.
Ideas?