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low.js Example: Even more...

What if you want to be able to control the LED both via Website and Serial?

This is where low.js shines. Everything is done asyncronly, so you can just paste the content of both /index.js together, remove duplicate lines such as duplicate requires and one of the two let state = 0; lines, and it just works.

Interfacing sensors and modules

A great IoT project needs more than just an on-board LED. For example, to build an autonomous car, you most probably would interface:

This is what microcontrollers like the ESP32 are made for. To educate yourself, you have the following options: