Show HN: Esp32sim – Run ESP32 firmware in the browser(github.com)
183 points by joakimeriksson | 34 comments
GitHub repository for esp32sim, an open-source ESP32 emulator that runs real firmware locally or in the browser without physical hardware.
#embedded on Hacker News
36 stories tagged embedded, newest first.
Reverse Engineering of the M-VAVE FM-1 Pocket Synthesizer Firmware(github.com)
54 points by 0bytes | 33 comments
GitHub repository documenting reverse engineering of the M-VAVE FM-1 pocket synthesizer firmware, with analysis, docs, and firmware images.
ESP32-C3 Adblock(github.com)
167 points by jayhoon | 65 comments
GitHub repository for a Pi-hole-style DNS ad-blocker running on a $2 ESP32-C3, storing 537k blocked domains as hashes in flash with a web dashboard.
Dirty Optimization Secrets (C for Playdate)(devforum.play.date)
66 points by ibobev | 7 comments
Playdate developer forum thread sharing advanced C optimization tricks learned while building a full-speed Game Boy emulator for the Playdate.
CHOMPI portable sampler instrument is now open-source (hardware and software)(chompiclub.com)
99 points by lashkari | 26 comments
Chompi Club's page announcing the discontinuation open-source release of the CHOMPI portable sampler's hardware and software files.
ESP32S3 cluster running 1.58-bit (BitNet) Language model(github.com)
143 points by nkko | 31 comments
GitHub repository for a 7-node ESP32-S3 cluster running a 0.4B-parameter LLM using 1.58-bit BitNet ternary quantization over an SPI daisy-chain.
Reverse-engineering a $35 backup camera display (AMT630A)(github.com)
61 points by mogrinz | 23 comments
GitHub repository for an MIT-licensed Arduino library for working with the AMT630A display controller chip used in cheap backup camera displays.
Show HN: PaperMono, e-ink fridge magnet shopping list with mobile web page(github.com)
112 points by seamus_c | 51 comments
GitHub repository for an e-paper fridge-magnet shopping list on the M5Stack PaperMono, with a FastAPI server and phone web UI.
Guitar amp and effects pedal built on the Waveshare ESP32-S3-Touch-AMOLED-2.06(github.com)
150 points by arbayi | 75 comments
GitHub repository for Coyopedal, an ESP32-S3 Neural Amp Modeler guitar pedalboard with SD-card model loading and a Gea-compiled native frontend.
The newest ESP32 can run Linux and it's getting close to a Raspberry Pi(xda-developers.com)
182 points by adunk | 88 comments
XDA Developers article about the newest Espressif ESP32 chip being able to run Linux, bringing it closer to Raspberry Pi-class boards.
When the Debugger Lies(danielmangum.com)
60 points by hasheddan | 17 comments
Daniel Mangum's blog post on unexpected memory values seen via the debugger while exploring the nRF54L key management unit and how SoC internals explain it.
Reverse engineering my e-scooter and rewriting the firmware in Rust(bensimms.moe)
395 points by vinhnx | 91 comments
Blog post describing reverse engineering the hardware, component communication, and firmware of an Egret GT e-scooter and writing custom Rust firmware for its display.
Speech Recognition and TTS in less than 500kb(github.com)
544 points by petewarden | 79 comments
GitHub directory for Moonshine's micro build, offering speech recognition and neural text-to-speech small enough to run on microcontrollers like the RP2350.
The future of Flipper Zero development(blog.flipper.net)
364 points by croes | 163 comments
Flipper Devices blog post by Pavel Zhovner outlining the future development plans for the Flipper Zero multi-tool device.
Honda Civics and the Evil Valet(juniperspring.org)
376 points by librick | 92 comments
Blog post giving a three-year status update on reverse engineering the headunit of a 2021 Honda Civic, including mapping its update process.
Flipper One Tech Specs(docs.flipper.net)
485 points by gregsadetsky | 161 comments
Flipper documentation page listing the technical specifications of the in-development Flipper One device, with an annotated hardware diagram.
Async Rust never left the MVP state(tweedegolf.nl)
415 points by pjmlp | 224 comments
Tweede Golf blog post by embedded engineer Dion arguing async Rust remains at MVP state, discussing async bloat and a proposed compiler-level Project Goal fix.
5x5 Pixel font for tiny screens(maurycyz.com)
781 points by zdw | 151 comments
A personal blog post presenting a 5x5 pixel bitmap font designed for tiny screens such as those used with microcontrollers.
USB for Software Developers: An introduction to writing userspace USB drivers(werwolv.net)
387 points by WerWolv | 46 comments
A blog post introducing USB concepts for software developers and explaining how to write userspace USB drivers, with C++ examples.
Vibe Code Warning – A personal casestudy(github.com)
325 points by jackdoe | 240 comments
GitHub repository pico2-swd-riscv, a library for debugging the RISC-V cores of the Raspberry Pi Pico 2 over SWD, shared as a vibe-coding case study.
Qualcomm to acquire Arduino(qualcomm.com)
1279 points by janjongboom | 519 comments
Qualcomm press release announcing its acquisition of Arduino and the new Arduino UNO Q board and App Lab powered by Qualcomm Dragonwing processors.
Hosting a website on a disposable vape(bogdanthegeek.github.io)
1317 points by BogdanTheGeek | 442 comments
A blog post by Bogdan Ionescu describing how he repurposed the microcontroller from a disposable vape to host a website.
Hosting a website on a disposable vape(bogdanthegeek.github.io)
611 points by dmazin | 246 comments
Blog post by Bogdan Ionescu describing how he repurposed the microcontroller from a disposable vape to host a website.
Show HN: I built a hardware processor that runs Python(runpyxl.com)
932 points by hwpythonner | 250 comments
PyXL project page showing a demo video of a custom hardware processor executing Python achieving 480ns GPIO round-trip versus a MicroPython Pyboard.
Google open-sources the Pebble OS(opensource.googleblog.com)
1183 points by hexxeh | 183 comments
Google Open Source Blog post from January 27, 2025 announcing the release of the source code for the Pebble smartwatch operating system.
Fluid Simulation Pendant(mitxela.com)
442 points by sschueller | 61 comments
A mitxela.com project page describing a handmade gold-plated pendant with an LED matrix display running a realtime FLIP fluid simulation.
I sent an Ethernet packet(github.com)
372 points by todsacerdoti | 119 comments
A GitHub-hosted blog post by Francis Stokes about sending an Ethernet packet from a microcontroller as the start of building a TCP/IP stack from scratch.
CapibaraZero: A cheap alternative to FlipperZero based on ESP32-S3(capibarazero.github.io)
374 points by andreock | 77 comments
Documentation homepage for CapibaraZero, a low-cost Flipper Zero alternative firmware/hardware project built on Espressif ESP32-S3 boards.
Extreme Pi Boot Optimization(kittenlabs.de)
481 points by todsacerdoti | 131 comments
Blog post describing how the author optimized a Raspberry Pi Zero 2 W to reach Linux userspace in 3.5 seconds for a solar-powered WiFi camera project.
I got almost all of my wishes granted with RP2350(dmitry.gr)
660 points by elipsitz | 325 comments
Dmitry Grinberg's blog post explaining why he loves the Raspberry Pi RP2350 microcontroller, covering his earlier RP2040 wish list and how the new chip addresses it.
I like the RP2040(dgroshev.com)
608 points by dgroshev | 334 comments
A blog post from June 2024 explaining why the author really likes the Raspberry Pi RP2040 microcontroller.
Making USB devices – end to end guide to your first gadget(popovicu.com)
361 points by todsacerdoti | 60 comments
Uros Popovic's blog post offering an end-to-end beginner guide to building your first USB device that a computer recognizes.
Considerations for a long-running Raspberry Pi(dzombak.com)
426 points by ilikepi | 300 comments
Blog post by Chris Dzombak on keeping a Raspberry Pi running reliably for months or years without intervention, part of his Pi Reliability series.
Wasm3 entering a minimal maintenance phase(github.com)
452 points by padolsey | 97 comments
GitHub repository for Wasm3, a fast WebAssembly interpreter and portable WASM runtime, here noted as entering a minimal maintenance phase.
RePalm(dmitry.gr)
483 points by p_l | 139 comments
Dmitry Grinberg's project write-up on rePalm, an unauthorized port of PalmOS to new hardware, covering PalmOS architecture, ROM formats, DALs and drivers.