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Bob Coyle

Member Since 06 Jun 2013
Offline Last Active Feb 12 2016 01:16 PM

Posts I've Made

In Topic: The Literate Potter

09 February 2016 - 11:15 AM

 Thanks for the info, I added the page to my bookmarks.

In Topic: Home Made Kiln Controller

04 February 2016 - 07:06 PM

I did some checking a while back on the change in resistance of nichrome wire with temp. As far as I can remember, it was not that much at normal kiln temps, which was kind of a surprise. Probably heat loss through the kiln walls is more important. I had a wimpy 10 amp test kiln that could barely make cone 6. I put a 1 inch kaowool blanket on the top and it made a big difference.in high end delta T.

In Topic: Home Made Kiln Controller

31 January 2016 - 11:26 AM

Yes Tim... the old bi-metal contact switches sucked.  SSR's are the way to go. They are cheap and last a long time. The way I set mine up is to put them in line with the power out of the wall and then put a female socket into the relay enclosure. I just plug the kiln into this and leave all of the switches on high. And I ALWAYS put a bar in the kiln sitter that is one cone higher than I am aiming for.


Andy... The problem you are facing is not only learning some basic electronics, you also need to know a little about what basic programming is. There are hundreds of tutorials on both electronics and also programming. I believe the simplest software development environment is the Arduino one which uses the "C" language. Most of what you want to do is already there in some form or other. You just go to the site and download it. There are also lots of information on basic electronics and how to hook stuff up. Once you learn a few C language commands, you can do a lot by just modifying existing code scripts. Also, The forum is very active and there are lots of people willing to help with your project.


Here is the link... You don't have to contribute to download at this point, you can click the just download button, but if you end up using it in your project, you might kick in a few bucks.


In Topic: Home Made Kiln Controller

30 January 2016 - 11:22 AM

I could probably put an Arduino controller together for you for the computer end, and you could use my app to run it, but you would have to build your own solid state switch interface to the power line.  As High Bridge says, that is not technically hard, but could be dangerous if you have no idea what you are doing.


To build the controller part yourself, you would at least have to know how to solder.

In Topic: Artsy Babble Translation Please

25 January 2016 - 11:04 PM

Sadly, much of the popular modern art pieces are IMHO  of less real artistic merit than said fire extinguisher.