Nikon D750 Remote Camera Trigger #celebratephotography

From maxx99 on Instructables:

Here is a simple Optoisolator Circuit (also known as an Optocoupler) that I use for my Nikon D750 camera, for an external remote Digital Shutter Trigger on my Camera’s Power Slider.

It is highly recommended that you isolate your Camera’s Trigger Control Circuit from any external voltage, even an Arduino!!! The only way to efficiently and effectively do this is via an Optical Isolation Circuit!!!

R1 and R2 are Current Limiting Resistors in this circuit and are designed for the 4N25 Phototransistor Optocoupler, driven from a Digital Logic CMOS Buffer IC, powered by a 12v Power Supply (I use a 12v Batt. for remote shoots to power my camera slider and the logic that controls the slider).

Read more


We #celebratephotography here at Adafruit every Saturday. From photographers of all levels to projects you have made or those that inspire you to make, we’re on it! Got a tip? Well, send it in!

If you’re interested in making your own project and need some gear, we’ve got you covered. Be sure to check out our Raspberry Pi accessories and our DIY cameras.


Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat and our Discord!

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 38,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython – The easiest way to program microcontrollers – CircuitPython.org


New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — New Products 11/15/2024 Featuring Adafruit bq25185 USB / DC / Solar Charger with 3.3V Buck Board! (Video)

Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: A New Arduino MicroPython Package Manager, How-Tos and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

Adafruit IoT Monthly — The 2024 Recap Issue!

Maker Business – Adafruit Daily — Apple to build another chip at TSMC Arizona

Electronics – Adafruit Daily — SMT Tip – Stop moving around!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !


1 Comment

  1. Usually you want separate controls for trigger and focus. I made a similar rig for firing 32 Canon DSLRs simultaneously. If you want the photos to be guaranteed at the same time, then you must apply the focus line (even when using manual focus) wait for a short period, say around a second, and then trigger. Asserting the focus line puts the camera into an ‘alert’ state, where it is expecting the trigger, and in this condition there is a fixed latency. Just in case that may help someone else.

Sorry, the comment form is closed at this time.