Comparison page

BL702 vs ESP32-C3

Side-by-side selection notes for specs, ecosystem readiness, known issues, and data confidence. This page is generated from structured component fields instead of a hand-written article.

BL702

Maker and embedded projects needing BLE 5.0 + Thread + Zigbee connectivity with BLE and Thread.

ESP32-C3

Maker and embedded projects needing Wi-Fi 4 + BLE 5.0 connectivity with RISC-V and Secure Boot.

Specification Matrix

DimensionBL702 ESP32-C3

CategoryWiFi MCUsWiFi MCUs

MakerBouffalo LabEspressif Systems

Core32-bit RISC-VSingle-core 32-bit RISC-V

Clock144 MHz160 MHz

WirelessBLE 5.0 + Thread + ZigbeeWi-Fi 4 + BLE 5.0

Voltage3.3V3.3V

LibrariesNeeds verificationArduino, MicroPython

Price$0.40 - $0.90$0.70 - $1.20

Known Tradeoffs

BL702

Module naming, flash size, and pin exposure vary by vendor board
English examples and library support should be verified before production use

ESP32-C3

Module naming, flash size, and pin exposure vary by vendor board
English examples and library support should be verified before production use

Open Individual Model Pages

BL702

Bouffalo Lab

RISC-V Bluetooth LE, Zigbee, and Thread MCU for low-power wireless peripherals and smart home accessories.

China-madeWiFi MCUs78% confidence

ESP32-C3

Espressif Systems

Single-core RISC-V Wi-Fi and Bluetooth LE MCU used for compact, low-cost IoT devices and ESP8266 replacement designs.

China-madeWiFi MCUs97% confidence