Show HN: Edsger – A handwritten Clojure REPL for the reMarkable 2

Someone turned a paper-like tablet into a code toy — and the internet is split between “why?” and “I need one”

TLDR: A developer turned the reMarkable 2 note-taking tablet into a system where handwritten code can run live, and people instantly argued over whether it’s genius or gloriously pointless. The comments boiled down to a perfect split: “why?” versus “this is so fun I want the device now.”

A developer showed off Edsger, a way to handwrite code directly on a reMarkable 2 tablet and get answers back like a little command line for your pen. In plain English: it turns a device most people use for notes and reading into a gloriously nerdy playground where scribbles become live computer instructions. And the crowd immediately did what the internet does best: turn a cool demo into a mini culture war.

On one side were the chaos-lovers and gadget romantics. One commenter basically summed up the whole vibe with “Because you can and it’s fun”, which might as well be the official slogan of every weird internet invention ever. Another admitted the project was so charming it became “a reason to get reMarkable” at all. That’s the dream for any creator: make something so delightfully unnecessary that people suddenly want the hardware.

But then came the brutally efficient opposition. The sharpest heckle was just “y tho” — two words, maximum damage. It captured the eternal reaction to side projects like this: is this brilliant tinkering, or tech people building a very expensive way to do something nobody asked for? Meanwhile, one eagle-eyed viewer added a splash of accidental comedy by asking if foo(42) output 44, sending a tiny wave of “wait, did we just catch a math crime?” energy through the thread. In other words, this was peak internet: awe, confusion, temptation, and one suspicious number.

Key Points

  • The article presents Edsger, a handwritten Clojure REPL for the reMarkable 2 tablet.
  • The post includes a demo video, handwritten presentation pages, an architecture diagram, and a transcript.
  • The project is documented with a public source code repository hosted on Codeberg.
  • The article references several related repositories and tools, including let-go, xovi, qt-resource-rebuilder, and xovi-message-broker.
  • The post includes external background references connected to Edsger Dijkstra and additional technical writing by Daniel Janus.

Hottest takes

"y tho" — that-guy-again
"Because you can and it’s fun" — LandR
"Now I have a reason to get reMarkable" — delaguardo
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