JavaScript
"The Language of the Web" is used everywhere - your laptop, phone, TV, and the servers that power the internet. With Espruino you can use it on a low power microcontroller too!
Responsive
Espruino is an interpreter. It gives you instant feedback so you can view and modify your program while it is running
Fully Open Source
Hardware (CC-BY-SA), software (MPLv2), and documentation. Add functionality, tweak it, or just browse and see how it works.
Everything on one chip for the lowest power consumption.
Unlike other boards that run JavaScript, Espruino fits everything it needs into single chip. This makes it affordable, reliable, and power efficient - allowing it to run for years on a battery.
No software needed. Get started in seconds
Espruino plugs in to your computer by USB and appears as a serial device. No drivers, and no special software. Just run a terminal application and start writing code right away!
Espruino Web IDE makes coding even easier
It installs in seconds and provides a modern Syntax Highlighted editor with code completion. It even automatically loads any modules you need from the internet.
The Graphical Editor lets you use Espruino even if you can't code!
The optional graphical editor makes it quick and easy to create simple devices, even if you've never programmed before.
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