auto feeder to use with a controller?

[sphelps]

Thought I'd post this little mod for those interested in running an auto feeder on an external controller.

I used an old Rena LG100 fish feed that I had lying around.



Removed the back, unplugged circuit board (not needed), cut off harness (not needed).



There is a limit switch at the top (black wires). Originally wired in the normally closed position. I rewired it so it's normally open, there's an extra tab on the switch, simple as cutting off one wire and soldering it to the other tab.

Once that was done I used a 9VDC power supply (one that comes with it) and wired it up as follows:



Note for demonstration I wired a simple manual switch in place of the relay (red button, yellow wires). The Relay needs to be normally open and simply allows you to plug it into a socket from an external controller like profilux. 1-2 seconds is enough to trigger it, it will complete one rotation and stop. Activate an many rotations as desired using 1-2 seconds on, every 10 seconds.

Now an exciting video.