pb1592
Jan 20, 2009, 02:38 PM
Hi.
In short, what I want to do is connect a very small 3.7V motor to a
receiver where a servo would go and allow the transmitter to control
the direction and speed of the motor. Anyone know a way to make this
happen? Below is a description of why I want to do this...
I am trying to piece together a hybrid heli out of an existing one and
some old parts. I have a 3-channel Symma S002 and, although its only 3
channel, I love flying it and like the way the body looks. This heli
has a horizontal tail rotor for forward/backward motion. The major
drawback to this heli, obviously, is lack of a gyro which makes it
difficult to control.
I have an old 3-in-one receiver/esc/gyro from a 4-channel Walkera 5#5
(which uses the exact same battery/motors as the S002). I want to put
the 3-in-one in the Symma S002. This heli has no servos and I want to
somehow use one of the servo outputs on the 3-in-one to control the
tail motor on the S002. The voltage output to control the servos are
more than enough for the tail motor but I can't figure out how to
allow for alteration of the current to make the rotor spin
forward/reverse/variable speed in response to moving the conrols. I
imagine in theory something could be constructed to do this. The three
pins for the servo ouput are V+, Vgnd and the variable signal pin to
control the pot in the servo. Any ideas on how this could be
accomplished with a tiny, cheap, homemade circuit?
Thanks!
In short, what I want to do is connect a very small 3.7V motor to a
receiver where a servo would go and allow the transmitter to control
the direction and speed of the motor. Anyone know a way to make this
happen? Below is a description of why I want to do this...
I am trying to piece together a hybrid heli out of an existing one and
some old parts. I have a 3-channel Symma S002 and, although its only 3
channel, I love flying it and like the way the body looks. This heli
has a horizontal tail rotor for forward/backward motion. The major
drawback to this heli, obviously, is lack of a gyro which makes it
difficult to control.
I have an old 3-in-one receiver/esc/gyro from a 4-channel Walkera 5#5
(which uses the exact same battery/motors as the S002). I want to put
the 3-in-one in the Symma S002. This heli has no servos and I want to
somehow use one of the servo outputs on the 3-in-one to control the
tail motor on the S002. The voltage output to control the servos are
more than enough for the tail motor but I can't figure out how to
allow for alteration of the current to make the rotor spin
forward/reverse/variable speed in response to moving the conrols. I
imagine in theory something could be constructed to do this. The three
pins for the servo ouput are V+, Vgnd and the variable signal pin to
control the pot in the servo. Any ideas on how this could be
accomplished with a tiny, cheap, homemade circuit?
Thanks!