Espruino
just
Espruino | just | |
---|---|---|
9 | 25 | |
2,716 | 3,550 | |
1.0% | 0.6% | |
9.7 | 2.5 | |
7 days ago | 6 months ago | |
C | JavaScript | |
GNU General Public License v3.0 or later | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Espruino
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A list of JavaScript engines, runtimes, interpreters
Espruino
- STARFIELD:Sooooooo the Founder's watch is just Bangle 1 Open Source?
- Firmware changelog?
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Gadgetbridge is an Android application for your smart watch and other devices
The Bangle.js 2 is an excellent device. As a former Pebble user, this is the first device that I consider an adequate replacement for my Pebble (which by now has a diminished battery life and corroded charging contacts).
Here is my impression of the Bangle.js 2:
- Battery: Lasts about 3 weeks on a charge, constantly connected to my phone, when the watch is used to display notifications and alarms. This is a major advantage over Apple Watches and Android/Wear OS watches.
- Display and buttons: The 1.3" 8-color transflective display is comparable to the Pebble Time series' 64-color transflective display. The display is always on, and the backlight activation is highly configurable. The Bangle.js 2 has a touchscreen and 1 button, while Pebble watches have no touchscreen and 3 buttons.
- Software: Runs on the completely free and open source Espruino JavaScript interpreter,[1] which was my main motivation for purchasing this device. There are currently 336 apps in the web-based Bangle.js app loader (app store), including utilites and clocks (watch faces), all of which are FOSS. The bootloader and firmware can be updated directly from the app loader. On Android, there is a distribution of Gadgetbridge (built from the same code base as Gadgetbridge) with internet access enabled that integrates the Bangle.js app loader into Gadgetbridge, which makes it very easy to use the watch.[2]
- Build: Built on the same device body as the SMA Q3.[3] The casing is plastic, and the watch is compatible with standard 20 mm watch straps. The IP67 water/dust resistance makes the watch usable for sports.
Overall, I highly recommend the Pebble.js 2 watch, which is the best FOSS-focused watch I have found to date.
[1] Espruino JavaScript interpreter: https://github.com/espruino/Espruino
[2] Bangle.js Gadgetbridge (distribution): https://www.espruino.com/Gadgetbridge
[3] SMA Q3: https://www.smawatch.com/details?product_id=130
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Does anyone have PineTime and Bangle.js 2? What are all their differences?
This is the firmware repo for the BangleJS : https://github.com/espruino/Espruino
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Running TypeScript on ESP8266/ESP32 Devices
This makes use of a JS interpreter made for embedded devices: Espruino
More details in the Espruino repo: https://github.com/espruino/Espruino
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Can the PineTime Watch stream music without a phone? (Onboard music storage)
There are subsets of JS for embedded device e.g. Espruino https://github.com/espruino/Espruino for BangleJS https://shop.espruino.com/banglejs also with 4MB or JerryScript https://jerryscript.net
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[AskJS] Do you use JavaScript on Microcontrollers? Which engine / interpreter?
- Espruino (2.2k stars)
just
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A list of JavaScript engines, runtimes, interpreters
just
- Just-JS: small, secure, robust and performant JavaScript runtime for Linux
- Elixir Saves Pinterest $2M a Year in Server Costs
- GitHub - just-js/just: a very small v8 javascript runtime for linux only
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I have done a full benchmark of a POST REST API on my computer: Node.js vs Fastify vs Express.js vs Deno vs Bun vs GO. Node.js is used WITH and WITHOUT clustering on 6-core I7 processor
https://github.com/just-js/just Is another for a V8 runtime, it really shows how well optimized it is. https://www.techempower.com/benchmarks/#section=data-r21
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Bun v0.6.0 – Bun's new JavaScript bundler and minifier
i just tried recompiling v0.0.2 (https://github.com/just-js/just/releases/tag/0.0.2) of just-js and comparing it to current. for the completely static build on ubuntu 22.04 i see following:
0.0.2 (v8 v8.4.371.18) - file size: 15.2 MB, startup RSS: 8.4 MB
- Just – A small V8 JavaScript runtime for Linux only
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Is Scala to Java the same relationship as TypeScript has with ECMAScript?
Not at all. Javascript, as well as java compiled into the bytecode, but just incrementally and at the runtime. You cannot compile typescript into bytecode directly (at least it intend to be like that). You can even compile js to executable (https://github.com/just-js/just). So no, typescript transpiles to javascript, whereas scala compiles to bytecode, it's different things
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A C++ web/application framework I have been building for the last 12yrs
Trust me, these guys are insane and go to really extreme levels and use optimization techniques which are not generally prevalent among the general programming fraternity. for eg, look at pico.v it is awesome and just-js is truly unbelievable, then there is faf, most of them combine low level programming trickery to reach those insane numbers. Also some of the code may not be useful in a production app but they actually extract the juice out of the metal at every instance. Memory optimizations, compiler optimizations, postgresql wire implmentations, rust black magic, these guys are really crazy and passionate.
- Caffè Italia * 26/10/22
What are some alternatives?
MicroPython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems
bun - Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one
jerryscript - Ultra-lightweight JavaScript engine for the Internet of Things.
fastapi - FastAPI framework, high performance, easy to learn, fast to code, ready for production
moddable - Tools for developers to create truly open IoT products using standard JavaScript on low cost microcontrollers.
ntex - framework for composable networking services
lowjs - A port of Node.JS with far lower system requirements. Community version for POSIX systems such as Linux, uClinux or Mac OS X.
hermes - A JavaScript engine optimized for running React Native.
circuitpython - CircuitPython - a Python implementation for teaching coding with microcontrollers
Duktape - Duktape - embeddable Javascript engine with a focus on portability and compact footprint
quickjspp - Port of QuickJS Javascript Engine.