rf remote control / in-car
rf remote control / in-car
(OP)
I want to make an RF remote control that tranmits from my steering wheel to a reciever under the dash to shift the transmission. I need to be able to shift at maxx.. 5/10 times per second, but I need to send up/downshift commands that are secure, no bit errors!
microchip makes cool rfmcus for this, but they can't 'shift' fast enough for me,
any suggestions?
thanks,
OM
microchip makes cool rfmcus for this, but they can't 'shift' fast enough for me,
any suggestions?
thanks,
OM





RE: rf remote control / in-car
RE: rf remote control / in-car
RE: rf remote control / in-car
RE: rf remote control / in-car
RE: rf remote control / in-car
a friend of mine is starting his own company called PCS (powertrain control solutions)www.transmissioncontroller.com
he is the one who needs this product. i am just trying to help out with infrared or RF option to fit any car, with one or ten wires leaving steering wheel.
(unless I misunderstood your 'running a wire from ign. switch')--I can not pull power into the steering wheel from ignition switch, the turning of the wheel would break any wire 'ran' into it.
we've ordered samples of steering wheel mounted buttons and they can respond to i'ferance, or won't send outputs out fast enough.
you have an excellent point about battery powered switches, we'd need to output battery status, and throw a red light when battery gets below certain threshold!
the existing horn wire in every car can be used to power whatever circuit we come up with, eliminating the need for separate battery... but is this is for a product to be sold, needs to have instructions that people can follow....
Mark
RE: rf remote control / in-car
anyone out there?
Mark
RE: rf remote control / in-car
There are LOTS of (even very cheap) vehicles that have various switches on the steering wheel (for radio and display control).
I'm fairly sure that none of these systems would use RF. They most likely use slip rings, or perhaps have wires that can twist reliably for the life span of the car.
Probably using the CAN bus.
RE: rf remote control / in-car
Just a suggestion. You might be able to pull power
from the horn switch on the steering wheel. A low
power drain from the switch most likely will not cause
the horn relay to close. Storing the charge received
from the horn in a super cap (so your controller doesn't
loose power when they blow the horn) would be something
to consider.
It would not need a power consuming LED to light when
the person is interested in checking for power to the
device. All he/she would have to do to test it would
be to blow the horn!
Of course, this is the good old fashioned car that we
are talking about. Nowadays, they might have a
controller in the steering wheel which has power and
data passed through the steering wheel to account for
say, the horn and the air bags. So, with this in mind,
YMMV. Hope that this helps!
Cheers,
Rich S.
RE: rf remote control / in-car
Like they say, you want something done "right", do it yourself. Reliability = redundancy. Code it all yourself according to what YOU want.
RE: rf remote control / in-car
Power is easily found in a steering wheel. Think where most ignition switches are along with blinkers and steering wheel controls. I can't not imagine lack of power at the steering wheel presenting a problem. Now if you were talking about a hard wired system, I could see this presenting a problem but you want wireless so it should not be an issue.
RE: rf remote control / in-car
RE: rf remote control / in-car