CPU / main boards

ESP32-C3-DevKitM

Small and cheap. A good fit for battery sensors.

CPU / main boards CompactLow cost ESP32-C3
ESP32-C3-DevKitM

01 What this can become

Humidity nodes, door sensors, tiny telemetry boxes.

Use it to size a tight enclosure and a sleep budget.

02 Hardware

  • Chip: ESP32-C3 (single-core RISC-V)
  • Radio: Wi-Fi 4 + BLE 5
  • USB: USB-UART or USB-Serial-JTAG, depending on the board
  • I/O: fewer pins than ESP32/S3 — budget GPIO early
  • Watch: do not debug deep sleep only on chip USB; do not copy ESP32 pin numbers.

03 When to pick it

Pick C3 for volume, a small shell, and Wi-Fi/BLE only. If you need a panel or many pins, move to S3.

中文

主控 / CPU

ESP32-C3-DevKitM

板子小、成本低，适合电池传感一类产品。

主控 / CPU 小尺寸低成本 ESP32-C3
ESP32-C3-DevKitM

01 能做成什么

温湿度节点、门磁、小型上报器。

想把方案做进很紧的外壳里时，先拿 C3 估尺寸和功耗。

02 硬件

  • 芯片： ESP32-C3（RISC-V 单核）
  • 无线： Wi-Fi 4 + BLE 5
  • USB： 常见 USB-UART 或 USB-Serial-JTAG
  • 引出： 脚比 ESP32/S3 少，GPIO 要精打细算
  • 注意： 深睡调试别只靠芯片 USB；脚号不能从 ESP32 直接抄。

03 什么时候选它

量要大、壳要小、只要 Wi-Fi/BLE 时选 C3。脚不够或要 USB 主机/屏，改 S3。