Random restarts of ATtiny2313A when buttons are used

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When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

Last Edited: Thu. Mar 8, 2018 - 04:28 AM
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That would have to take the striped apron award of the week!

Mmmmm! Molded mud resistors. Where’s the tag strip and the 12AX7’s?

Last Edited: Thu. Mar 8, 2018 - 07:18 AM
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A Google for "striped apron award" had only nine results... one of them is this thread.

 

I get the gist, but what does it mean, really?

 

 

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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Where’s the tag strip and the 12AX7’s?

 

There!  Don't you see them?

 

They are right next to the Fahnestock clips!

 

Wow!  Cool project!

 

JC 

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I get the gist, but what does it mean, really?

A buthcer's job.

John Samperi

Ampertronics Pty. Ltd.

https://www.ampertronics.com.au

* Electronic Design * Custom Products * Contract Assembly

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A buthcer's job.

Got it! ;-)

"Experience is what enables you to recognise a mistake the second time you make it."

"Good judgement comes from experience.  Experience comes from bad judgement."

"Wisdom is always wont to arrive late, and to be a little approximate on first possession."

"When you hear hoofbeats, think horses, not unicorns."

"Fast.  Cheap.  Good.  Pick two."

"We see a lot of arses on handlebars around here." - [J Ekdahl]

 

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They are right next to the Fahnestock clips!

It's been a long time since I used any of those, at least 2 years. 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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Those carbon resistors take me back to the days of the RadioShack pbox projects.

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I'm afraid of static discharges during development cycle could damage my LCD and/or AVR. In any case I'll assemble my project on PCB and test for any glitches. Also I think that choke on the transformer low-voltage output could help against current spikes (I suggest that voltage spikes are already rejected with my capacitors) but I not sure what the value for choke is pretty good. Also I wonder if there any math behind choosing values for filtering chokes (I know some for caps but not for inductors)

 

Anyway thank you all for your advises and suggestions. I'll test my device in real environment and report about the result

Viktor Drobot
A.N. Belozersky Research Institute Of Physico-Chemical Biology MSU

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A transformer has inter-winding capacitance. Nasties from the mains side couple through this capacitance and travel through your circuit until they find ground. Putting a choke in series with the ac secondary wont do much - especially with the non sinusoidal current through the rectifier.

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So they are necessary mainly for switching PSUs, aren't they?

Viktor Drobot
A.N. Belozersky Research Institute Of Physico-Chemical Biology MSU

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Switching psus are a different application. They usually have a common mode choke on the input side to mainly stop them radiating.

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