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by konavan
Sat Dec 21, 2013 5:25 pm
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 53526

Re: Controlled Shutdown at Power Failure

Bud, thanks for that info. after some pricing research it appears that most supercaps are minimum ~$11 regardless of size. so getting smaller than 350F results in no cost savings. oh well. also, tell me about your processing. I can easily see how sensing the power fail signal you could initiate a sh...
by konavan
Fri Dec 20, 2013 6:05 pm
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 53526

Re: Controlled Shutdown at Power Failure

Bud, sorry my question was not clear. by performance I was curious as to the run time you are experiencing after power fail event. I am interested in cost savings of the supercaps if I need only say twice the shutdown time (1.5 minutes?) and you are getting many more minutes.
by konavan
Fri Dec 20, 2013 4:29 pm
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 53526

Re: Controlled Shutdown at Power Failure

Thanks for posting Bud, that looks excellent. can you tell me about the supercaps you are now/still using? what is the performance? also, tell me about the powerfail signal. I assume you have this connected to a GPIO pin configured with pull-up? thanks in advance for my questions.

-Van
by konavan
Thu Dec 19, 2013 10:29 pm
Forum: Automation, sensing and robotics
Topic: Controlled Shutdown at Power Failure
Replies: 72
Views: 53526

Re: Controlled Shutdown at Power Failure

BudBennett, that design of the Plan B looks very nice. have you anything to report since this post? are you still using it? any failures?

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