This is the most frugal DIY clamp for high speed laser triggers
MIOPS: Smartphone Controllable High Speed Camera Trigger by MIOPS — Kickstarter
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Amazon.com : MIOPS Smart+ Smartphone Controllable Camera and Flash Trigger for High Speed Photography & Timelapse with C1 Cable for Canon 3-Pin Cameras : Electronics
Miops Camera Trigger with Mobile Dongle Kit for Canon 3-Pin
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Amazon.com : MIOPS Smart+ Smartphone Controllable Camera and Flash Trigger for High Speed Photography & Timelapse with C2 Cable for Canon, Fujifilm, Hasselblad, Pentax, and Samsung Cameras : Electronics
MIOPS Mobile RemotePlus Smart Camera Trigger for High Speed Photography with Laser/Sound/Lightning Detection Sensor - S1 Cable for Sony, Konica Minolta, and Hasselblad Cameras - Walmart.com
A Review of the MIOPS Smart+ Trigger for Landscape Photography | Fstoppers
How to Take Bird Photographs with Laser Trigger - MIOPS
MIOPS Smart Trigger Review: Remote Control for Your Camera
How to use the Laser Mode on MIOPS Smart+ - YouTube
MIOPS Smart Camera Trigger Review - Photography Life