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Lebeda's Content

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#64964 PWM synchronization

Posted by Lebeda on 05 March 2016 - 07:19 PM in Netduino Plus 2 (and Netduino Plus 1)

I need only two 50Hz signals, I think it should be doable with 10MHz chip, shouldn't be? I'm new to such small controllers and many things work differently than on Windows OS. But six instructions (set HIGH, set LOW, MEASURE - 2x) isn't big deal, is it? What should I be aware of? Interrupts can be disabled.




#64961 PWM synchronization

Posted by Lebeda on 05 March 2016 - 04:09 PM in Netduino Plus 2 (and Netduino Plus 1)

Thank you for answers, I found nice chip AtTiny25 which will do required job easily for me at ~1$. I hope I will make basics of C lang.




#64930 PWM synchronization

Posted by Lebeda on 25 February 2016 - 08:28 AM in Netduino Plus 2 (and Netduino Plus 1)

I need two 50Hz signals with 120us idle period when both signals are down. How to ensure that period? Based on other inputs I will extend or shorten DutyCycle, but again, how to achieve that both signal will stay synced and won't overlap their ON parts?

 

My idea is to create one 100Hz PWM and using an external T flip-flop to split even and odd peaks. Can it be done without external circuit?





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