Espruino Pico, Javascript on a USB Stick

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There are probably very few official numbers for this, but web developers at least seem to outnumber the amount of people who regularly poke pins and registers with C. For them, the embedded world must be a scary and foreboding domain, full of bitwise operations and dynamic types. [Gordon] figured there was another way and built a Javascript interpreter for a microcontroller. The latest board built around this interpreter is up on Kickstarter, and its even smaller and more capable than his earlier version.

This isn’t [Gordon]‘s first rodeo; last year he launched the (full-sized) Espruino, featuring an ARM Cortex M3 and his very own Javascript interpreter. The large-scale Espruino was a rousing success, and now he’s moving on to a smaller thumb drive-sized footprint for the Pico. The hardware is a bit better, relying on the ARM Cortex M4 STM32F4 with a bit more RAM, and this time the board is slightly cheaper. It still runs the same Javascript interpreter, though, so all the code is exactly what you’d expect.

We haven’t seen many projects using this tiny Javascript of Things, but the new layout does make it fantastically useful. Depending on how the crowd funding campaign turns out, [Gordon] might be adding socket, and USB HID support, along with inline C functions.

The JavaScript of Things

Espruino

There are a ton of people out there that can program in JavaScript, but give them an embedded device, and they’re up the creek without a paddle. Not anymore, that is, thanks to [Gordon]‘s wonderful Espruino, a JavaScript interpreter for ARM microcontrollers. Oh, it’s also a very capable dev board that has more than enough power to turn just about any project you can imagine into reality.

On board the Espruino is an ARM Cortex M3 in the form of an STM32 chip, 256kB Flash, 48kB of RAM, and a ton of PWM and ADC pins to go along with 2 SPI ports, 2 I2C ports, and 2 DACs. It’s a very capable piece of hardware, and if you’re looking to build anything, it would be hard to pick a better general purpose dev board.

[Gordon] has put his board up on Kickstarter, and since it’s already been successfully funded, he’ll be releasing the hardware and software sources under an Open Source license. If you’ve ever wanted to run JavaScript on an ARM board, it looks like Espruino is just the ticket.

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