NE555-SPICE-Model VS ltspice-guitar-pedals

I'm developing a SPICE model for the NE555 timer and I'd like to include some real-world constraints. According to the datasheet, the rise and fall times of the output pin are typically 100 ms. I currently model the rise and fall times using a capacitor and an arbitrary voltage source, but this does not produce good results, and I was wondering if there was a better way to model it. The project can be found at https://github.com/MuMashhour/NE555-SPICE-Model.

Shameless plug: I’ve spent a bit of time making LTspice simulations of some popular pedals and putting them up on GitHub.

https://github.com/Cushychicken/ltspice-guitar-pedals

I’ve got a few blog writeups of the more complicated ones, too. The Tube Screamer is the most popular but the Boss Graphic EQ or the DynaComp compressor are my favorites.

https://cushychicken.github.io/posts/ltspice-tube-screamer/

https://cushychicken.github.io/ltspice-boss-ge7-equalizer/

https://cushychicken.github.io/ltspice-mxr-dyna-comp-compres...

I've simulated some very similar ones to this that you could likely modify to your purposes. https://github.com/Cushychicken/ltspice-guitar-pedals

I put together a few ltspice models of guitar pedals a few years ago. Might be of interest to you. https://github.com/Cushychicken/ltspice-guitar-pedals

I've been slowly working on building up a collection of LTSpice simulations of popular guitar effects pedals over the course of the past few years.