i know that most of the people is against to use nichrome wire directly as is not easy to use and must be isolated too, as is also easy to use a ceramic heaters too, but i have 4 rolls of nichrome wire that are perfectly to experiment in a few project i have, so i need a way i could control the current passed to the nichrome so it doesn't melt and i can also control it's temperature.
i know the properties of the wire, and the calculations that needs to be made to know it's resistance depending the gague and the length, but i'm clueless how i can limit the current.
i have 12v/20A and 5V/5A power supply to use and i could also hook it up directly to 220V (i would like to do this if is possible, so i can power up arduino from a simple 5V / 2A power source and save some resources)
any idea? tutorial? tip? how i should wire it and how i could control it via sofware with arduino?
thanks in advance !