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mikroverk
esp32sim
Rust2026–2026
mikroverk / esp32sim

esp32sim

Open-source ESP32 emulator. Run real firmware locally or in your browser — no hardware, no cloud, no subscription.

2Distinct people
2Mentions
0Explicit recommenders
1.2KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Open-source ESP32 emulator. Run real firmware locally or in your browser — no hardware, no cloud, no subscription.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by hour2 dated mentions

Observed mentions: 2026-10-17 13:51:08 UTC to 2026-10-17 16:25:08 UTC.

012026-10-17 13:00:00 UTC to 2026-10-17 14:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsOct 17, 13:002026-10-17 14:00:00 UTC to 2026-10-17 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsOct 17, 14:002026-10-17 15:00:00 UTC to 2026-10-17 16:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-10-17 16:00:00 UTC to 2026-10-17 17:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsOct 17, 16:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Oct 17, 13:002026-10-17 13:00:00 UTC2026-10-17 14:00:00 UTC110
Oct 17, 14:002026-10-17 14:00:00 UTC2026-10-17 15:00:00 UTC000
Oct 17, 15:002026-10-17 15:00:00 UTC2026-10-17 16:00:00 UTC000
Oct 17, 16:002026-10-17 16:00:00 UTC2026-10-17 17:00:00 UTC101

What Hacker News says

2 sources
I actually want to have a play with this sometime. But honestly, these gigantic, poorly-formatted AI-slop paragraphs like the one below this heading… https://github.com/mikroverk/esp32sim#boards-esp32-s3 … are just too much with their dense mix of formatting, brackets, semantic punctuation, command line arguments and part numbers etc. (This one is particularly absurd but it's not the only one). I may be middle-aged now and a non-expert but I am pretty sure these things are generally exhausting to even expert young readers. I would urge you to reconsider how this page is presented.
In Show HN: Esp32sim – Run ESP32 firmware in the browser

Show HN: Esp32sim – Run ESP32 firmware in the browser

Hi HN, I’ve been working on esp32sim, an open-source ESP32 emulator that runs in the browser. The fun part of the demo is that there is no ESP32 involved — the firmware is executing in the emulator. The goal is to make ESP32 software easier to experiment with, test and simulate without always needing physical hardware connected. Source: https://github.com/mikroverk/esp32sim I made a short video showing it in action: https://youtu.be/waoWFilTWEc I’m particularly interested in feedback from embedded developers: what would an emulator like this need to support before you’d actually use it for development, testing or CI?
212 points · Open discussion

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