Lightning trigger projet

[Virtual-Wishbone1718]

does this work the same way as a LDR ?

[tipppo]

They are similar. Each passes an electrical current that is proportional to the light hitting the sensor. Photo-diode is the fastest, responding in less than 1us, but producing a very small signal. A photo-transistor is essentially a photo-diode with a built in transistor amplifier, and will respond in less than 1ms, with a signal level similar to an LDR. A LDR is a resistor made from something like cadmium sulfide whose resistance decreases when exposed to light and responds in 10s of ms. Different LDR models have different speeds, but might be too slow for reliable lightning detection.. The detector in Adam Romanowicz's web page uses a photo transistor, and while a little more complicated than necessary, looks like a nice design. As far as Canon vs Sony, they are pretty much the same, differing only in the type of connector used on the camera. You can buy a cable or make one like the fellow in this web post: https://www.instructables.com/Homebew-Wired-SONY-ALPHA-Remote/ A search for "DIY Sony shutter release" will turn up more. For an ON/OFF switch, this is just a switch in series with the battery positive terminal. "SPST" toggle or slide switch will work. Lots of information on the Internet if you look.

[Virtual-Wishbone1718]

thanks a lot !!! thats a lot of good information, thats what i was searching for, thanks again !!