Arduino-style JavaScript: setup() runs once, loop() repeats. delay(), sendAT(), waitFor() and your own functions are awaited automatically. Available: pinMode, digitalWrite/Read, analogRead (0–4095), analogWrite, millis, Serial/Serial1/Serial2 (begin, print, println, printf, available, read), TinyGPS, WiFi, Wire and LiquidCrystal_I2C (init, backlight, clear, setCursor, print, write, createChar, cursor, blink, scrollDisplayLeft), Adafruit_NeoPixel for WS2812 strips (begin, setPixelColor, Color, ColorHSV, fill, clear, setBrightness, show).