An Obsidian.md plugin to embed CircuitJS circuit simulations into notes
I like using CircuitJS for sketching out circuit designs and I wanted a good way to organize and reference those circuits. With this plugin, I am able to keep the actual circuit designs in version control and backed up along with the rest of my Obsidian vault. Having the circuits embedded in Markdown means I can also include extensive notes on the circuits, links to additional information, etc.
In CircuitJS use File -> Export As Text... and paste the code into a markdown code block tagged as circuitjs like this:
```circuitjs
$ 1 0.000005 10.20027730826997 50 5 43 5e-11
r 176 80 384 80 0 10
s 384 80 448 80 0 1 false
w 176 80 176 352 0
c 384 352 176 352 0 0.000015 -9.16123055990675 -10
l 384 80 384 352 0 1 -0.01424104005209455 0
v 448 352 448 80 0 0 40 5 0 0 0.5
r 384 352 448 352 0 100
o 4 64 0 4099 20 0.05 0 2 4 3
o 3 64 0 4099 20 0.05 1 2 3 3
o 0 64 0 4099 0.625 0.05 2 2 0 3
38 3 F1 0 0.000001 0.000101 -1 Capacitance
38 4 F1 0 0.01 1.01 -1 Inductance
38 0 F1 0 1 101 -1 Resistance
h 1 4 3
` ` `
When in Reading view Obsidian will then replace the code block with an emedded CircuitJS instance with the circuit defined in the code, and a link to open the circuit in a full browser.
The embedded simulation is completely interactive, but changes don't get stored back in the code. If you make changes in the simulation and want to keep them, use File -> Export As Text... before switching back to Editing mode and pasting in the updated code.