Initial Phase
With the change from a solenoid actuator to a servomotor, we tried using the standard long attachment to the servomotor to push the button. However, we realised that the standard long attachment was unable to reliably push the button because the amount of time the attachment was in contact with the button was extremely short, hence we designed a sort of “fin” to lengthen the duration.
We also designed a housing for the servomotor to reside in.
We also changed our screw plates to one long rectangle so that we had a greater surface area of the non-slip pads to prevent slipping.
Prototyping
After the first round of testing, we made some adjustments by increasing the thickness of the fin to allow more room for error when pressing the button, and we changed our housing to include the slit at the side to accommodate the wires.
With all the above changes, the below image shows the front view of our assembled fan attachment.
