Close

DIY Low-cost AT Switches

Back to project overview

Low-cost, homemade AT switches that, unlike Jelly Bean buttons, work by many forms rather than by contact or pressure

Discussions

K.C. Lee wrote 08/19/2018 at 22:06 point

May be you could consider using LM393 Comparator.  It has open collector output that you can pull up to 5V for driving your logic circuit input directly (not power pin!)  So you can get rid of the mickey mouse logic.

  Are you sure? yes | no

Cassio Batista wrote 08/21/2018 at 13:09 point

Hi, Lee. Thank you for the tip. Do you have some (or any) kind of material about that to read? We're not really taught about the differences between OpAmps used as comparators and actual comparators. To be honest I myself have not even the heard the term "mickey mouse logic" until now :(

  Are you sure? yes | no