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Image: petrinet.anikiej.com

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A Petri net editor rebuilt after a class's online tool went down

When the free online Petri net editor used in a university course stopped working a week before a deadline, a student rebuilt it with Claude and loaded the group's file.

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The full story

An engineering student's class used a free online editor to build Petri nets, and a week before the group's final project was due the website stopped working. They had their finished net saved as a .npn file but no way to check it. The student, an experienced software engineer, built a replacement with Claude that mimics the original site as closely as possible, trying out the /grill-me and /handoff skills from a Matt Pocock talk along the way.

They loaded the .npn file, made minor improvements to the net and handed in the assignment the next day. The original site was still down, so they shared the tool with classmates. It is open source under the MIT licence.

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Online PetrNet editor I've been using for my university classes stopped working, so I made my own wiForum threadDeleted on Redditreddit.com

    The maker's post on r/ClaudeAI.

    The poster has deleted it, but the original is still readable (it can take a few seconds to load): archived copy of Reddit: Online PetrNet editor I've been using for my university classes stopped working, so I made my own wi (opens in a new tab)

  • The project: petrinet.anikiej.comBlog or write-uppetrinet.anikiej.com

    The editor.

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Prompt & Solder

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What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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