Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
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I have limited knowledge, but i am looking to build a basic circuit using a photocell that will see a camera flash and switch on a 12v latching relay, can anyone point me in the right direction ??
I have limited knowledge, but i am looking to build a basic circuit using a photocell that will see a camera flash and switch on a 12v latching relay, can anyone point me in the right direction ??
Don't use a photocell, it's far too slow, you need a photo diode and a high pass filter so it only responds to the flash and not slow changes in intensity.
Don't use a photocell, it's far too slow, you need a photo diode and a high pass filter so it only responds to the flash and not slow changes in intensity.
There are plenty of flash trigger circuits on the net that uses photo cells. Here is one: **broken link removed**
To get this circuit working for your particular purpose, you must add a relay, diode, battery and a switch
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