Today I discovered EEWeb.
EEWeb
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Daily Archives: 2024-05-10 [Friday]
FreeRouting
Today I learned about FreeRouting, which is also available as a KiCad plugin. It does track/trace routing for PCBs.
Electronic symbol
Found another great page on Wikipedia: Electronic symbol. This reference lists schematic symbols for various electronics components.
Sigmoid function
The S-shaped curve which looks a little like exponential progress in the beginning is the Sigmoid function.