Mikro.jsexperimental

TypeScript for microcontrollers

Modern JavaScript, type safety and fast refresh on real hardware.

Get Started

View on GitHub

Fast feedback loop

Interactive dev console with watch mode and incremental builds that deploy to your device in a few seconds.

Full TypeScript

Near-complete ES2024 support, type-checked hardware APIs, and editor autocomplete.

Batteries included*

GPIO, PWM, I2C, SPI, UART, WiFi, HTTP, UDP, NeoPixel, deep sleep, SNTP, CBOR, schema validation, key-value storage, and more.

Host simulator

Run your code on your computer with mikro sim dev. No microcontroller needed.

No exceptions

Typed Result errors instead of try/catch. Every failure is visible in the type signature.

Built-in testing

Test suites with resource leak detection and more. Run in the simulator or on a real device.

Your first program

Blinky: the "Hello, World!" of tiny devices.

import {digitalWrite
, pinMode
} from 'mikro/pin'
import {sleep
} from 'mikro/sleep'

// Replace with your board's LED GPIO pin if different
const LED_PIN
 = 15

pinMode
(LED_PIN
, 'OUTPUT').orPanic
('Failed to set pin mode')

while (true) {
  digitalWrite
(LED_PIN
, 1)
  await sleep
(500)
  digitalWrite
(LED_PIN
, 0)
  await sleep
(500)
}

Get it running:

npmpnpmyarnbun

npm create mikro -- --template blinky

pnpm create mikro --template blinky

yarn create mikro --template blinky

bun create mikro --template blinky

Learn more

Getting Started: set up your first project step by step
Error Handling: learn how Mikro.js uses typed Results instead of exceptions
API Reference: explore GPIO, WiFi, I2C, SPI, and more
Examples: blinky, PWM, WiFi, NeoPixel, UART, and more