Hello,
two problems I have noticed for the moment.
1) Pin 8 on Arduino Uno refuses to work as "PULL_UP_INPUT" (this worked fine int R872). However pin 7, for example, works.
I haven't tested other pins.
2) OP-amp in a role of comparator: it does not work on "Vin higher than Vref" (with inverting input as Vref, non-inverting input as Vin) - unless I messed up something. This does NOT work in R872 also.
However OP-amp as comparator principle works imy VU meter project. https://www.youtube.com/watch?v=i-Hup9x3toE
I cannot load a schematics; I get "Uploaded file is not valid: exceeded image dimensions limit (image size : [512 x 389], limit : [1 x 1]).".
Regards,
Marjan
two problems I have noticed for the moment.
1) Pin 8 on Arduino Uno refuses to work as "PULL_UP_INPUT" (this worked fine int R872). However pin 7, for example, works.
I haven't tested other pins.
2) OP-amp in a role of comparator: it does not work on "Vin higher than Vref" (with inverting input as Vref, non-inverting input as Vin) - unless I messed up something. This does NOT work in R872 also.
However OP-amp as comparator principle works imy VU meter project. https://www.youtube.com/watch?v=i-Hup9x3toE
I cannot load a schematics; I get "Uploaded file is not valid: exceeded image dimensions limit (image size : [512 x 389], limit : [1 x 1]).".
Regards,
Marjan
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Last edited by marjan.mrak on Sun Feb 06, 2022 12:40 pm; edited 2 times in total