search

toyoshim / iona

JVS IO Board by Arduino Nano
https://github.com/toyoshim/iona/wiki/Compatibility-Information
BSD 3-Clause "New" or "Revised" License
31 stars 11 forks source link

Earth of the RC-LPF #6

Open cyllboy opened 4 years ago

cyllboy commented 4 years ago

I know... this is a newbie question... Where do I connect the earth of the RC-LPF? As far as I know it is not the same as "ground".

I refer to the symbol:

   |
----- 
/////

Thank you!

cyllboy commented 4 years ago

Issue solved, I connected it to the common ground

toyoshim commented 4 years ago

Sorry, I haven't noticed your question. Yes, using a common ground is fine. RC-LPF is a "kind of analog circuit", but here it is used only to generate a 2.5V signal from a 5V 1:1 PWM signal. So, we don't need to be so serious against noise.

toyoshim commented 4 years ago

this will be a good question to be kept open for others.

cyllboy commented 4 years ago

Thank you! Your design works like a charm!