JavaScript for Microcontrollers with Espruino (ASL)

on YouTube ↗26m

" summary

Explains that a full JavaScript interpreter runs on microcontrollers so development and debugging happen on-device, not cross-compiled; shows Espruino running on an EFM32 drawing microamp sleep currents and spiking to ~20 mA when active; demos a USB REPL and live-coding LEDs and buttons on an s3o Pico; wires a Bluetooth Low Energy puck controlled from a webpage using Web Bluetooth and advertises beacon data — most demos work live, a few flaky BLE bits.

AI-written summary · about

" chapters (16)

1. 0:00Intro
2. 2:38Arduino IDE
3. 4:03The BBC Micro
4. 5:37Why JavaScript
5. 6:31Battery Life
6. 8:15USB Interface
7. 8:59Wrapper
8. 9:38Web IDE
9. 11:10Button and Light
10. 11:53Build Light
11. 12:48Error Code
12. 13:46Web Bluetooth
13. 16:00Demonstration
14. 17:24Bluetooth
15. 19:18Testing
16. 20:28Advertising

" related talks

• 33mJavaScript for HardwareGordon Williams · You Gotta Love Frontend 2016
• 37mJavaScript On MicrocontrollersNiels Leenheer · You Gotta Love Frontend 2019
• 45mJavaScript all the thingsJan Jongboom · JavaScript fwdays'18
• 16mEscaping the Sandbox with Puck.jsGordon Williams · Render Conference 2018
• 36mHoney, I Shrunk the Scripts! — the secret life of JS on microcontrollersIstván Szmozsánszky "Flaki" · JSConf.Asia 2018
• 32mJS in Strange PlacesKassandra Perch · NodeConf Argentina 2017
• 27mHow I've been using JavaScript to automate my houseErick Wendel · CityJS Conference São Paulo 2022
• 54mRunning JS engine on a microcontroller (UK)Volodymyr Shymanskyy · JS Fest 2018