Ollie wrote:Nice - good work
racemaniac wrote:love it
looks like a fun project . Was it hard to get the temperature readings of the soldering iron correct?
No, that was easy, the PTC on those irons changes its resistance pretty linear with the temperature so Kuro (the original project's author, better explain: https://hackaday.io/project/3417-hakko- ... 2-software ) uses 2 very simple linear equations and you need something to capture both of them, then use the equations:
On my project version this is a bit more automatic, you only need to enter directly both temps and the software do the equations and saves the values on the eeprom (flash). This can be even more automatic, I use an arduino with a max6675 (temp sensor) to check the temps, if the soldering station also have the max6675 can be almost fully automatic, but you need to do the calibration once (per soldering iron), so maybe this will be unnecessary/over kill.