AtomS3-Lite

Board
by M5Stackm5atoms3-lite≈ cheap (under ~$15)
Verify my boardCompareEdit on GitHub
Flash this board — 1 firmware option · Reported
AtomS3-Lite board
Board
AtomS3-Lite pinout
Pinout

Specifications

Radiosinherited from ESP32-S3

Wi-Fi
Wi-Fi 4 · 2.4 GHz
Bluetooth LE
BLE 5
Bluetooth Classic
no
802.15.4
no

USB

Native USB
yes
Connector
usb-c

Board

Form factor
m5-atom
Dimensions
24 × 24 × 9.5 mm

Display & extras

Extras
rgb-led
Built onAtomS3-Lite BoardESP32-S3 SoC

24x24mm ESP32-S3 atom unit without display: programmable RGB LED, IR transmitter, USB-C.

Firmware for this board

Reported

  • ESPHomeReportedhomeweb flasher
    Flash ESPHomeweb flasher

    Reported esp-atlas asserts this board↔firmware link at the shown trust tier — it does not guarantee your specific unit or the current firmware version. Flashing can erase keys/config and can brick the device. At your own risk.

Notes

  • ESP32-S3FN8; 8 MB flash, no PSRAM
  • WS2812C-2020 programmable RGB LED, IR transmitter LED, programmable button, HY2.0-4P interface, no onboard battery
  • io.gpio_exposed=6 QUOTED: vendor page states "IO Interface x6", pins G5/G6/G7/G8/G38/G39. The page separately lists an HY2.0-4P Grove port (G1/G2) not covered by that "IO Interface" tally -- kept out of gpio_exposed since the vendor's own count doesn't include it. io.gpio_free=6 DERIVED: subtracting esp32-s3's soc.reserved_pins (strapping {0,3,45,46}, usb_flash_tied {19,20,35,36,37}) -- none of G5/G6/G7/G8/G38/G39 fall in either set -- gives 6 - 0 = 6. No max Grove/rail output current stated on this page, so power_out is omitted.

Verify my board

Reads the connected chip over USB and checks it against what esp-atlas cites for AtomS3-Lite — over Web Serial, no backend, nothing leaves your browser.

In-browser verify needs Web Serial: Chrome or Edge on a desktop. Safari, Firefox and phones cannot do it.

Serial monitor

Not connected.