Automatic Dough Shaper - Blog #10 More Magic Smoke

RE: Automatic Dough Shaper - Blog #10 More Magic Smoke

e14phil — Wed, 04 Apr 2018 13:00:13 GMT

Ah man!

That sucks, you should keep going even though the deadline has passed, this is such a cool and fun project... I REALLY want to see some cookies come out of it.

RE: Automatic Dough Shaper - Blog #10 More Magic Smoke

aspork42 — Thu, 29 Mar 2018 19:25:08 GMT

Oh no - I had a similar failure this past week and my heart just sank. What was the original reason for a triac versus a relay? You originally had plans to do zero crossing detection and limit the current that way wasnt it?

RE: Automatic Dough Shaper - Blog #10 More Magic Smoke

DAB — Wed, 28 Mar 2018 18:59:20 GMT

First issue is power analysis.

Most toasters run between 1200 and 1500 watts.

At 110V, that means it pulls between 10 and 15 amps. Pop, there goes your fuses.

Anytime you interface devices, you really do need to understand what they use in power, and what they take for control.

In your case, you underestimated the current draw.

Now you need to go back over your design and beef up the components to support the heavy current draw and you should be ok.

DAB

RE: Automatic Dough Shaper - Blog #10 More Magic Smoke

genebren — Wed, 28 Mar 2018 18:09:53 GMT

Project are full of challenges (and potential to create smoke) and your project seems no different. You comprise to skip the temperature control seems like a very good one given the amount of time left. It was a great effort to try to control the toaster, and it did give you opportunities to learn, so don't consider it a waste.

Good luck!

Gene