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CRUMB Circuit SimulatorNewsDev Diary - Programmable shaders
In-game event

Dev Diary - Programmable shaders

CRUMB Circuit Simulator · published 5 May 2026, 18:25 UTC

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Program shaders from within CRUMB

Some people may look at this update and ask the question "why do we need this?"... And the answer is very simple. One of the core concepts and non-negotiable features that CRUMB 2.0 needs to have, is for users to have the ability to create components with the same fidelity, at the very least, as the ones that I created in the 1.x versions of CRUMB.In order to do this, I need to give users the ability to create custom materials at a great depth in order to achieve the level of realism and fidelity that I think CRUMB 2.0 should be able to provide.

Jump into the video to take a look at the current working alpha build and see how customisable shaders can be used to create realistic representations of an LED.I am hoping to try and quickly cycle through feature building quickly and bring more regular updates/video updates and hopefully Beta access in the near future 🤩

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Major update15 Sep 2026100,000 copies sold. Thank you.100,000 😮 That's how many copies of CRUMB Circuit Simulator have now been sold on Steam. I keep looking at the number and it still doesn't feel real. CRUMB started as, and still is a one-person project. It went out in November 2022 with no publisher and no marketing, just a virtual breadboard and the hope that a few people would enjoy poking around on it. Every one of those copies came from yo…In-game event12 Sep 2026Looking for the most advanced electronics simulator in the world?I have been super busy posting on Facebook with new developments and features and have neglected to keep everyone up to date here! CRUMB 2.0 is shaping up nicely and has the potential to become the single most powerful and accessible electronics simulator! But first to answer a consistently asked question: "Will 2.0 be free to existing users?" Yes. And let me introduce to CRUMB Advanced. To tho…Community12 Aug 2026Real life == Sim LifeGood evening ladies and gentlemen! I’m continuing to pour my life into this next version of CRUMB and I have a little something to share with you all! It is now possible to connect real hardware to CRUMB and interact with it, in this example we can flash an Arduino R3 with the same code that’s running in the simulator 🤩 Much love! Mike