For those who are looking for a way to create circuit diagrams within Obsidian, I’ve developed a plugin called Circuit Sketcher! 
You can install it directly from the Obsidian Community Plugins section in the app by searching for Circuit Sketcher or visit Obsidian Community Plugins Page. It’s perfect for creating simple circuit sketches. Here’s a preview of its usage Circuit Sketcher Obsidian Plugin 1.1.x Usage. I hope it’s helpful for your workflow and I would love to hear your thoughts if you try it out! 
More information can be found on the GitHub page https://github.com/code-forge-temple/circuit-sketcher-obsidian-plugin
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