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General Category => Your projects => Topic started by: cheerio on July 03, 2013, 20:54:43 PM

Title: temperature regulator
Post by: cheerio on July 03, 2013, 20:54:43 PM
i am building a digital temperature regulator for a water tank. it works alright except of a weird problem that prevents the triac to fire up.
the problem is that the mcu does not deliver 5v to the opto. it delivers ~1V. when i disconnect the mcu pin and measure it unconnected it delivers 5v. if i put 5v directly to the opto it fires up. i switched the mcu and the opto with new ones but i still got the same probem. wtf is going on here? can you give me a hint what might be the problem? never ran in smth like this before.
Title: Re: temperature regulator
Post by: cheerio on July 03, 2013, 22:02:23 PM
it was a software problem... forgot to call the init procedure... what a shame