Irony problem

Perhaps, you should buy a nice soldering iron and put a card up at your local music shop offering to help electric guitarists change out their pickups and pots.  Then you might recoup your investment quickly and not have to worry about being out-of-pocket.

This one-https://www.sparkfun.com/products/12724 is analog/no feedback of real temprature and markings cannot give exact number thus not nowing the actual tip temp.

That's why I wrote-

plus I wanted a way to read the temp on screen and building something to that is impossible!!!!!!!!!!!!!!!!!!!(partly possible)

This one-https://www.sparkfun.com/products/12724 is analog/no feedback of real temprature and markings cannot give exact number thus not nowing the actual tip temp.

That's why I wrote-

plus I wanted a way to read the temp on screen and building something to that is impossible!!!!!!!!!!!!!!!!!!!(partly possible)

real temprature and markings cannot give exact number thus not nowing the actual tip temp

And your point is.?

You were given information earlier regarding temperatures and things that affect it, so what is a few degrees.

Some of your other questions lead some of us to wonder if you could undertake this safely.

Personally I will not give information that could be misread/not followed and thereby endanger someone .... call me names or whatever, but I won't be party to it.

Rather than ask us to do your project, you could always do your own project that detected the temperature, displayed it and controlled a light, which is the first part of this quest.

Who knows maybe it might be useful for some other project later.

You may also wish to start doing research (ie search the internet and read data files) on what you need to measure the temperature involved.

If I'm not mistaken a thermistor doesn't have a very good curve in those temperatures and over that range.

Hopefully you will understand that the physical building is a very small part of any project, and if you want to 'own' the project you need to do the work ... otherwise just buy one.

Mark

Questions of the quest

-Can a thermistor whitstand that temprature?

-For a soldering iron, how many watts do I require it to make it come near 500C

   royston dsouza

First, I am not sure why you would want to reinvent the wheel. But, that's not my business.

Newark Part No. 30F1725 ) might be an option for you.

Irons vary greatly by manufacture's, but it would be easy to say that 50 watt minimum would be required, probably more towards 100 watts.

Ben Heck's Home-Brew Solder Reflow Oven 2.0 - YouTubeTo get an idea of some ideas of where to go with this idea.

This thermistor is a particularly high temp version yet it has a maximum temperature of 300 C under his required range.

You will need a thermocouple or similar to operate near the desired 300-500C