Search found 10 matches

by Dratsabylgu
Feb 10th, 2012, 3:43 pm
Forum: Frames, Hulls, & Bouyancy
Topic: leak detection
Replies: 6
Views: 4691

Re: leak detection

http://makeprojects.com/Project/Water-Leak-Detector/1382/1 Forget the upper part ( the power supply ) and use the ROV power instead. Place electronics in controller and place a sensor in the ROV sensor can be 2 wires with ~ 1cm blank ends use some HMA (Hot melt adhesive) to secure on the ROV bottom
by Dratsabylgu
Feb 10th, 2012, 3:17 pm
Forum: Control Systems and Tethers
Topic: Webcam/Sensor Input Over Tether
Replies: 1
Views: 1466

Re: Webcam/Sensor Input Over Tether

Ethernet ?
by Dratsabylgu
Feb 8th, 2012, 4:35 am
Forum: Manipulators & Tools
Topic: Measuring tool
Replies: 20
Views: 24483

Re: Measuring tool

standard speed of light = c ( in a vacuum ) in air the speed of light is almost the same as in a vacuum ( = c / 1.0003 ) in water the speed of light is c / 1.333 most measuring tools are designed for working in air, so when use in water you have to recalculate the distance cool diy projects on a las...
by Dratsabylgu
Feb 7th, 2012, 9:31 am
Forum: Manipulators & Tools
Topic: Measuring tool
Replies: 20
Views: 24483

Re: Measuring tool

If using a standard lasertool for measuring distances underwater you have to correct it, because the speed of light is not the same in the water as in air or vacuum.
The speed of light is a factor 1.333 slower through water @ 20 degree celcius then through a vacuum.
by Dratsabylgu
Feb 6th, 2012, 7:31 am
Forum: Lighting
Topic: Good Lighting
Replies: 4
Views: 4911

Re: Good Lighting

Seoul P7 Emitter http://www.led-tech.de/en/High-Power-LEDs-Seoul/-3.5W-Seoul-LEDs/Seoul-P7-Emitter-LT-1284_121_78.html + color temp is 6300 + output is 800 lumen viewing angle of 130° this is ok for navigation lighting, but is too much for video or photography for video or photography you can use a...
by Dratsabylgu
Feb 6th, 2012, 6:47 am
Forum: Lighting
Topic: Good Lighting
Replies: 4
Views: 4911

Re: Good Lighting

http://www.uwphotographyguide.com/backscatter-underwater Place 2 lights left and right from the camera and use narrow beam lights so that particles in the water don't get illuminated. In the picture section A and B are the lights and in these lightbeams backscatter can occure. In section C there is...
by Dratsabylgu
Feb 5th, 2012, 7:33 am
Forum: Lighting
Topic: Good Lighting
Replies: 4
Views: 4911

Good Lighting

For good lighting you need the correct color and enough light. If you wanted to use LEDs the the color temp should be 6000 - 6500 K this is the same color temp as normal daylight. And you need lots of light so go for something like this http://www.ledssuperbright.com/30w-led-c-18/100w-white-high-pow...
by Dratsabylgu
Feb 5th, 2012, 7:19 am
Forum: Cameras
Topic: Shopping For Underwater Video Cameras
Replies: 4
Views: 3078

Re: Shopping For Underwater Video Cameras

Or you can use a IP webcam or security camera.
f.i. this one http://panasonic.net/pss/security/produ ... index.html
by Dratsabylgu
Feb 3rd, 2012, 6:12 pm
Forum: Introductions
Topic: Hi from the Netherlands
Replies: 2
Views: 1414

Hi from the Netherlands

Hi all my name is Wim aka Dratsabylgu.

New in the ROV world but planning to build my first ROV this year.