Seeed Studio XIAO ESP32-C3 Review: Budget Compact Wi-Fi/BLE Board

What it is

Seeed Studio XIAO ESP32-C3 (Pre-Soldered) — Seeed Studio SKU 102010633

Specifications

Processor

ESP32-C3 RISC-V single-core up to 160 MHz Source

Wireless

2.4 GHz Wi-Fi; Bluetooth Low Energy 5.0 / Bluetooth Mesh Source

Memory

400 KB SRAM and 4 MB Flash Source

I/O

11 GPIO (PWM), 4 ADC, I2C, SPI and UART Source

Dimensions

21 x 17.8 mm Source

Verified price

USD 5.99; in stock when checked 2026-10-10 Source

Use cases

• Budget Wi-Fi/BLE sensor nodes
• Low-complexity smart-home devices
• Battery-oriented prototypes where workload is modest
• Small maker projects needing the XIAO form factor

Evidence / testing

• Research-based review using Seeed Studio product and technical documentation.
• ITHutir has not yet published hands-on power measurements or long-term testing for this board.

Advantages

• Low current verified purchase price
• Compact 21 x 17.8 mm XIAO form factor
• Wi-Fi and BLE 5.0 connectivity
• RISC-V ESP32-C3 is sufficient for many simple sensor and control nodes

Limitations

• Single-core 160 MHz processor and much less memory than XIAO ESP32-S3
• Only 4 ADC channels versus 9 on the XIAO ESP32-S3
• No ITHutir hands-on test evidence yet
• Current price and stock can change

Alternatives

• Seeed Studio XIAO ESP32-S3 Review: Compact Power for IoT Projects

Who it may suit

• Budget-conscious IoT builders
• Simple sensor-node projects
• Developers who do not need the S3 memory and processing headroom

Current purchasing options