M5Stack Core2

Chip	ESP32
Flash	16 MB
PSRAM	8 MB
Max LEDs	512
Audio	✔
Display	2" 320x240 ILI9342C IPS LCD (SPI)
Touch	✔
Storage	On-chip FAT (web UI only; no USB drive)
Network	✔
Update modes	Standalone (WiFi/OTA)

Wiring

GPIO	Can do	Notes
`13`	in / out / PWM	Port C RXD2
`14`	in / out / PWM	Port C TXD2
`19`	in / out / PWM	M-Bus
`25`	in / out / PWM / DAC	M-Bus DAC1
`26`	in / out / PWM / DAC	Port B, DAC2
`27`	in / out / PWM	M-Bus
`32`	in / out / PWM / ADC	ADC1_CH4 (Port A SDA)
`33`	in / out / PWM / ADC	ADC1_CH5 (Port A SCL)
`35`	in / ADC	ADC1_CH7 (M-Bus, input-only)
`36`	in / ADC	ADC1_CH0 (Port B, input-only)

Reserved pins — leave these alone

GPIO 0 — I2S LRCK (speaker)
GPIO 2 — I2S data (speaker)
GPIO 4 — microSD chip select
GPIO 5 — LCD chip select
GPIO 12 — I2S BCLK (speaker)
GPIO 15 — LCD data/command
GPIO 18 — LCD clock
GPIO 21 — Internal I2C SDA (AXP192 power IC + touch)
GPIO 22 — Internal I2C SCL (AXP192 power IC + touch)
GPIO 23 — LCD MOSI
GPIO 38 — LCD MISO

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