Got my new servos in over the weekend so I can finally proceed with the project. So far, I did a rough temporary bracket to space them apart and simplified the keyways that I am going to use. I decided to ditch connecting the servos to the ball jonts and connect them right into the female shafts to save about 20MM of space. I worked out how far each damper can turn and the start and stop angles of the open/close positions so it will make life a little easier in the future.

I also started to trace out the front control panel PCB because I wish to eliminate it to save space. There is not much on it so it should be easy to do. If all goes well, I will be able to interface with the back control baord behind that PCB to make everything function. A second reason I want to do it is to be able to pop the front board back on if something were to ever fail.

The white board in the top left of the picture is the one I wish to eliminate. I plan to make a 18 pin connector I can plug directly into the AC controller (green board to the right of it) to emulate the front board. The three blue boards that are stuck together are the 5K digital potetiometers that will be replacing the temperature controls and fan speed. I know the original pots were 4.7K but 5K should be plenty close enough.


Below are the servo motors connected to the dampers. I was testing them here to ensure they can turn the dampers without any issues. They have plenty of torque to serve their purpose in this project



This is the back of the white interface board in the first picture. I was marking where all of the traces go so it will be easier to make the connector when the time comes. Still have a couple of things to trace but its almost there.


My next step is to complete the programming and then fit everything into one housing I can insert into the original climate control space