[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Aquatic Plants Digest V2 #991
On 10/03/97 at 03:48 p, Peter O'Dwyer (Aquatic Plants Digest) said:
>I have been considering building my own using an inexpensive PC,
>specifically, the PLCDirect DL405 and DirectSoft software.
>However, it's a very expensive solution (~$2K) and will require
>alot of programming. Has anyone used a PLC to automate all
>systems on there aquarium? If so, how did you interface the pH
>probe and perform calibrations?
There is a brand new thingie from Siemens called a LOGO (comes in
several models) which is a programmable controller and costs about
$200. Take a look at it, it is pretty cute. Six inputs and four
outputs (120VAC, 7A). So for many purposes you can dispense with a
relay! And four builtin timers. And power failure protection (of
the timers and program). Pretty neat!
Dave Gomberg, FormMaestro! http://www.wcf.com
gomberg at wcf_com
Help stop Internet spam! Join CAUCE: http://www.cauce.org/