A few photos

[pavlo]

This link will take you to my gallery with photos of my 4 month old tank and a few pics of the Monaco trip, quality not too good Im afraid
My Gallery (http://gallery.homdens.co.uk)

Hope you like them

Paul

[Eddie S]

wassup with yout tang?

interesting little mpeg, does it do that a lot?

Eddie http://www.ultimatereef.com/ibv3/iB_html/non-cgi/emoticons/laugh.gif

[BrianO]

Nice Setup & Pics Pavlo

http://www.ultimatereef.com/ibv3/iB_html/non-cgi/emoticons/smile.gif



Brian.

[MadSi]

Nice pics,

Can you tell me more about your home made controller???

Cheers

Si

[pavlo]

Thanks for the positive comments

Eddie, it isnt my tang, I'm hosting the video for Martyn Doyle who was unable to host it himself. I think the conclusion was that the fish was mad, I dont know if it is still alive, maybe Martyn will tell us.

MadSi

The controller is a microcontroller (PIC16F84) which has 13 input/output pins. 6 of these pins control triac circuits so that they can switch 240volt loads up to about 250watts each. One pin is used to send serial data to the lcd display and the remaining 6 pins will be used as inputs from level sensors so that top ups and water changes are simplified.

At the moment it is running as a surge controller just switching valves in the bank of four solenoid valves. These can been set to run in any order and for any time from 1 sec to 255 sec.

The chip is programmed from my pc and has an instruction capacity of 1024 bytes, this doesnt sound a lot, but because it is programmed in machine code, programmes can be made very compact. The surge control, serial output routines and button testing routines use about one fifth of the chips memory. The best bit is that the chips cost about £2.50 each and with the demise of ondigital there are loads of second hand ones about (they were used on the pirate viewing cards-not that I ever had one).

Any more questions, please ask

Cheers

Paul