<![CDATA[ChipMusic.org - Arduinoboy: Arduino's GND vs GB Link cable GND]]> 2014-05-31T01:07:31Z PunBB https://chipmusic.org/forums/topic/14415/arduinoboy-arduinos-gnd-vs-gb-link-cable-gnd/ <![CDATA[Re: Arduinoboy: Arduino's GND vs GB Link cable GND]]> Boner wrote:

all grounds together.

Brilliant, cheers!

]]> https://chipmusic.org/Afrowolf 2014-05-31T01:07:31Z https://chipmusic.org/forums/post/209874/#p209874 <![CDATA[Re: Arduinoboy: Arduino's GND vs GB Link cable GND]]> all grounds together.

]]> https://chipmusic.org/Boner 2014-05-29T01:56:50Z https://chipmusic.org/forums/post/209667/#p209667 <![CDATA[Arduinoboy: Arduino's GND vs GB Link cable GND]]> Heya people,

Dumb question for some smart people.

Just following Trash80's schematic, and I'm unsure where to tie the GB link cables' GND to, My first thought was to tie it to the GND on the arduino nano's board, but each will have their own independent power supply. (GB 4x+1.5V batteries, Arduinoboy, +5V PC USB)

So my question is, can I get away with tying the link cable's GND to the GND on the Arduino? Or do I have to add in an extra optoisolator somewhere?

Many thanks in advance.

]]> https://chipmusic.org/Afrowolf 2014-05-29T00:32:59Z https://chipmusic.org/forums/post/209661/#p209661