im working on a project that will use an Arduino uno to release the shutter on my pentax k50 DSLR. The simplest way of getting the shutter to fire with a signal from the Arduino came from this Youtube video:
The method in the video im interested in starts at the 2:00min mark.
Many people online have described making a shutter control this same way but with several saying that there needs to be an optocoupler used for safety.
The way the shutter release works is by actually grounding the current on the tip of the jack rather than sending a pulse.
With all that said is the method in the video likely safe even though it doesnt use an optocoupler? With voltages from the Arduino pin only being 5v and the voltage of the shutter release typically being around 3.3v is there any real danger of damaging circuits anyway?
The method in the video im interested in starts at the 2:00min mark.
Many people online have described making a shutter control this same way but with several saying that there needs to be an optocoupler used for safety.
The way the shutter release works is by actually grounding the current on the tip of the jack rather than sending a pulse.
With all that said is the method in the video likely safe even though it doesnt use an optocoupler? With voltages from the Arduino pin only being 5v and the voltage of the shutter release typically being around 3.3v is there any real danger of damaging circuits anyway?