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Talking to 74HC574 chips


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#1 sweetlilmre

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Posted 22 September 2010 - 09:43 AM

Hi,

Here is a nice little R.E. project I did over the weekend on some old electronics: My Blog
There is so much old stuff just getting tossed into the dump which is a shame as these bits contain a wealth of commercial grade electronics.

-(e)

#2 hari

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Posted 22 September 2010 - 01:37 PM

Wow! It always amazes me how well people can reverse engineer circuits. Well done!

#3 Chris Walker

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Posted 22 September 2010 - 04:04 PM

Very nice, sweetlilmre! We may need to have a "junkyard" challenge in the future :)

#4 sweetlilmre

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Posted 22 September 2010 - 04:37 PM

Wow!
It always amazes me how well people can reverse engineer circuits. Well done!


Very nice, sweetlilmre!

We may need to have a "junkyard" challenge in the future :)


Thanks :) It was a good bit of fun and luckily not too difficult. There is a newer model of this decoder with a totally different display circuit / bus that I want to look at next. Only one 7-segment display, but 3 buttons and an IR receiver... this one looks challenging!

Hmm a Junkyard challenge sounds excellent....
-(e)




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