Here is my video on making a Remote cable release. It makes use of a esp32 board and a micro servo motor (linear actuator). You will trigger the shutter via the use of an Android Mobile App using Bluetooth. I will use it mainly on my Copal shutters mounted lenses as the torque is not strong to push the shutter on my 8x10 lenses with older shutters.
In the video description you can find the link to the coding files and the 3d STL file for the case. The Linear actuator file is from thingiverse which I also put in the video description.
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