Homebuilt ROVs Forum

See my two posts here about propeller choice: viewtopic.php?f=3&t=411

Does this help:

I have completed my university electronic engineering project to build an ROV. I have a project page at http://mbed.org/users/scotto/notebook/scottrov/ where you can download the full project report.

FWIW, the mbed is an excellent tool.

Can anyone recommend a specific potting compound? It has been suggested to me that I could use fibreglass resin, like this: http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_168217_langId_-1_categoryId_165625 . I also have some of this: http://uk.farne...

I am trialling 3 LMD18200's: http://www.national.com/pf/LM/LMD18200.html#Overview . They seem to work fine, on a breadboard, out of the water, so far ! Expensive though .... I am using them with 1 PWM, 1 direction, and 1 ground connection. They also support a single combined PWM / direction signal. ...

For the record, I have had a terrible experience with Cornwall Model Boats and no longer recommend them.

I ended up buying 40mm 5-blade Graupner propellers from www.gliders.uk.com without any problems.

I have done some recent tests of motor load v propeller size and style that may be of interest. Using a Rule 500gph bilge pump, a 12V power supply and a selection of propellers: - Robbe 3 blade 35mm (R1473) ( http://www.cornwallmodelboats.co.uk/acatalog/robbe-propellers.html ) - Robbe 3 blade 50mm (...

Finding longer U bolts here in the UK has defeated me for the time being, but I have found what I believe is a suitable alternative: http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=11478392&fh_view_size=150&fh_start_index=0&fh_eds=%3f&fh_location=%2f%2fcatalog01%2...

Hi there. I am planning to build an ROV as a third year electronic engineering individual project. Unfortunately I have been told that a simple 3-thruster version isn't "complicated" enough so I am planning to add a control system to maintain a constant level. I will be using a 3-axis acce...

According to the data sheets for the Rule bilge pumps ( http://www.mackengineering.co.uk/product_downloads/RULE%20model%2025D.pdf ), when they are operating in reverse they only work at 20% compared to operating in forward. This raises a few questions for me ... - Can someone confirm this is true? -...