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arms22 / SoftModem

Audio Jack Modem Library for Arduino
BSD 3-Clause "New" or "Revised" License
184 stars 36 forks source link

What is the SJ? #10

Open JohnInWI opened 6 years ago

JohnInWI commented 6 years ago

Newbie here.... In the schematic diagram, what is the component SJ1? I've never seen that designation. Thanks! image

rmeister commented 6 years ago

Not sure, but maybe some sort of soldering joint/jumper.

JohnInWI commented 6 years ago

As I study this circuit, I'm wondering if it is the switching mechanism that is part of the jack? Maybe when the jack is unplugged, the input just loops to the output? Nonetheless, I'm doing this up on a breadboard soon to give your very interesting Firmata/ Javascript project a try. My eventual goal is to use an Arduino soft modem via Android (app inventor?) for youth robotics classes I teach. I think the big leap is going to be adapting the audio in/ out for use from App Inventor.

gabrielgrant commented 4 years ago

Any update on what that component is/was?

nonchip commented 3 years ago

my best guess is that it's a wrong symbol (and with the wrong pinout) for those "either solder me or cut through me" connections along the vgrove in their commercial board: image