fritzing

• https://fritzing.org/

Fritzing is an open-source hardware initiative that makes electronics accessible as a creative material for anyone.

Debian install

   1 sudo apt install fritzing

Custom parts

• https://fritzing.org/learning/tutorials/creating-custom-parts/using-generic-parts

The quickest and simplest way to create new parts is to use Fritzing's generic parts and define their properties in the Inspector.

These include ICs, resistors, pin headers and the Mystery Part.