Espressif's compact Wi-Fi + Bluetooth Low Energy combo module built on the ESP32-C3, with an on-board PCB antenna. Flash is integrated inside the chip package: 4 MB (N4X, H4X) or 8 MB (H8X) per the datasheet v2.2 ordering table — boards assembled with this module carry no separate flash chip. In MCUID's hardware chain — chip → module → board — this page holds the module facts; chip capabilities live on the ESP32-C3 chip page; headers and connectors on the board page.
Start from the board: ESP32-C3-DevKitM-1 — see the C3/C6 first-flash guide for the bring-up path.
What the module decides
- Antenna — PCB on-board antenna; the external-connector sibling is the ESP32-C3-MINI-1U.
- Flash — 4 MB (N4X/H4X) or 8 MB (H8X) inside the chip package (datasheet v2.2 ordering table); the DevKitM-1 ships the 4 MB N4X assembly.