I have an Arduino Pro (5v, 328) wired to a couple sensors and a 16x2 LCD. When I run it through USB, it works fine. I also have a 12v/1A power adapter with a 12v/1A regulator that feeds it. When I use the power adapter/regulator, the Arduino Pro runs for about 15 seconds, then it will start flashing on and off.
I have not idea what is causing this. Any ideas?
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I found it was the regulator that was causing the issue. It was very hot. The part I don't understand is that the regulator was rated for 12v-1A, so I would have thought it would be fine?
I removed the regulator chip and used a regulated power supply instead. The problem went away and it is working correctly now, but I still don't understand why the regulator got so hot/stopped with the rating specification it had. Any ideas?
The part I don't understand is that the regulator was rated for 12v-1A, so I would have thought it would be fine?
That is only the ratings, the way you operate it defines how much power it will dissipate. It is very easy to exceed the power dissipation of a device while keeping well within the ratings. Sounds like the thermal shut down was kicking in.
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