Paul Hilton wrote:
Couldn't you use a relay with a 5V coil to control the 12V load?
The servo signal is not an analog signal, it is a logic signal with a
1-2ms wide pulse that repeats approx every 20ms. As such, it can't be
used directly to trigger anything, it must be interpreted by another
circuit. The receiver pin also doesn't source enough current to drive
anything other than logic levels.
Simple PIC circuits can be designed to translate from servo signals to
switches of any size. See:
http://www.anvilus.com/mrc.html
for an inexpensive circuit that can drive 4 relays (or any 150ma load)
from two servo channels. It even includes mixing if you want that
feature. Add 4 inexpensive auto relays to that circuit and you'll have
a solution that is far less expensive and far easier to fix than
anything else on the market.
Frank P.
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