M5Stack C147 Chain DualKey
M5Stack C147 Chain DualKey is a programmable dual-key input development board equipped with the ESP32-S3FN8 main control chip. This dual-key comes with pre-installed Chain macro keyboard firmware that supports USB/BLE connections and can emulate HID input devices. The front key integrates 2 hot-swappable blue switch mechanical keyboard keys and 2 programmable RGB LEDs, providing excellent interactive feedback. This dualkey features two HY2.0-4P expansion ports that support lateral expansion and connection to other sensor devices. The C147 Chain dualkey is suitable for smart home applications, keyboard peripherals, macro keyboards, and other scenarios.
Features
- ESP32-S3FN8 main control chip
- Built-in 350mAh lithium battery
- 2 programmable RGB LEDs
- 2 hot-swappable blue switch keys
- M5Stack Chain series expandable design
- LEGO-compatible holes on the back
- Lanyard design
Kit Contents
- 1 x Chain DualKey
- 1 x keycap sticker
Applications
- Smart home control
- Macro keyboard
- Keyboard peripherals
Specifications
- ESP32-S3FN8 at a Dual-core Xtensa LX7 processor, with a main frequency up to 240MHz SoC
- 8MB flash memory
- 5V DC USB power input
- 2x WS2812B RGB LED
- 47.9mm x 34.3mm x 23.9mm dimension
- 23.7g weight
- Standby current:
- 4.2VDC at 8.97μA power-off mode (VBAT)
- 4.2VDC at 107.64μA deep sleep mode (VBAT)
- 5VDC at 41.7mA USB 5V power (no battery)
- 63mm x 72mm x 28mm package dimension
- 39.3g gross weight
Mechanical Diagram
Additional Resource
Videos
Publié le: 2026-01-14
| Mis à jour le: 2026-01-26