TPB #90 – Analyzing Error in the Projectile Sensor

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The error of the Camera Axe’s projectile sensor is analyzed. Experiments are done in software to isolate the error which turns out to come almost entirely from the 4 microsecond granularity of the Camera Axe’s timer hardware. Then math is done on that 4 microsecond granularity to determine how that affects the reported speed of the bullet in the Camera Axe and the positioning of the bullet in a photo.

For a ...

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TPB #89 – Help Design the Best Lightning Photo Tools

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This video shows a work in progress of some great software that Dan and PTB have been working on to improve the ability of the Camera Axe to photograph lightning. While the Camera Axe was already pretty good at photographing lightning this makes a number of significant improvements to that software. I encourage others to join the forum thread below and help design the best possible software update to photograph lightning. Some ...

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TPB 88 – Camera Shutters Explained

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This video explains what a shutter does differently at 1/100, 1/1000, and 1/8000th of a second shutter speeds. Then it explains how this all relates to high speed flash sync.

Edgertroic Video Camera

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TPB 87 – High Speed Photography Overview

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This is a 50 minute long video about high speed photography. I start with a history. Then go into an explanation of how it works and with a list of the useful equipment. It ends with a number of case studies showing how you can take many different types of these exciting photos.

If the video is longer than you want to watch at least check out the slides. You can get ...

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TPB #86 – Adjusting the Airgap Flash’s Voltage/Brightness

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This video shows how to adjust the the brightness of the airgap flash by adjusting its internal voltage. Make sure you know how to safely handle high voltage before attempting this.

* Projectile Photography with the Airgap Flash
* Airgap Flash User Manual
* Buy the Airgap Flash here

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TPB #85 – Using Long Cables with the Camera Axe

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Will 100+ feet of cable work with the Camera Axe with sensors and triggering Cameras/Flashes? Yup.

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TPB #84 – Weather Proof Motion Sensor

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I show how to make a weather proof motion sensor for the Camera Axe. Most of the video is about how the case is made, but I also touch on the fact that this sensor is more accurate than the standard Camera Axe motion sensor because it uses I2C instead of analog values to report distance.

Schematic

Code (5.5 or newer an you must enable max sonar menu)

Part List:
* Sonar
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TPB #83 – Improved Laser Trigger

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I show how to use a few dollars in parts from your local hardware store to improve a laser trigger on the Camera Axe. I basically use some PVC parts to create mounts for the laser and light sensors. This makes them weather proof, easy to mount on a tripod, and easier to align due to a diffuser in front of the light sensor. http://www.cameraaxe.com

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TPB #82 – Airgap Flash Reflector Update

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The airgap flash works well up close, but it would be nice if the light was more focused so it could be placed further from the target. Here I use laser cut acrylic pieces to build a reflector for the airgap flash and then test its performance.

* Airgap Flash
* Fresnel Lens

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TPB #81 – Focusing Tips for Liquid Droplets

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A few tips and tricks I use to get the focusing correct for liquid droplet photography. The main tips suggested are using live view, a focus chart, and a focus rod to align droplets.

* Focus Chart
* Camera Axe

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