Honey, I Shrunk the Scripts! — the secret life of JS on microcontrollers
summary
Concrete claims, tools, numbers and demos: Johnny-Five + Firmata runs Node code off-board while commands stream to microcontrollers; Espruino runs source on-device so whitespace and comments slow execution measurably. Tiny engines: V7 (~40–100 KB), JerryScript fits under ~200 KB flash and ~40–64 KB RAM, MJS targets ~25 KB by dropping features. Real demos include a 39-line JavaScript Pebble watch face matching C performance and games compiled in-browser to microcontroller hardware that actually run.
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chapters (19)
- 0:00Intro
- 0:34JAVASCRIPT ON HARDWARE
- 1:25ONCE UPON A TIME IN 2009..
- 3:52NODE ROBOTICS WITH JOHNNY FIVE
- 5:41NODE-SERIALPORT
- 6:30THE FIRMATA PROTOCOL
- 7:44THE TESSEL
- 8:09FLAKI MEETS THE HARDWARE WORLD
- 14:25ESPRUINO EXECUTES JAVASCRIPT ON THE DEVICE, STRAIGHT FROM SOURCE
- 17:05LET ME TELL YOU A LITTLE STORY ABOUT 600 LITTLE ASCII BYTES.
- 18:41THE V8 FUNCTION-INLINING LIMIT IS REAL
- 20:23V7 IS AN EMBEDDED JAVASCRIPT ENGINE
- 21:50MUS IS A JAVASCRIPT SUBSET ENGINE
- 23:53EMBEDDED EXPLORATIONS
- 24:22JERRYSCRIPT
- 25:00PREPARING YOUT FOR A DIGITAL AGE WITH THE BBC MICRO:BIT
- 26:41THE MAKECODE EDITOR ON THE MICROBIT
- 32:34INTRODUCING: CLOUDUBOY
- 33:51HOW ABOUT THIS?
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