ESP32-C3-Zero Ultra-Small WiFi & BLE 5.0 Module

Meet the ESP32-C3-Zero — a compact, high-performance wireless microcontroller module packed with WiFi 802.11 b/g/n and Bluetooth Low Energy (BLE) 5.0 connectivity in an impressively tiny footprint. Whether you're prototyping IoT devices, building smart home automation systems, or developing wireless sensor networks, this ultra-small module delivers professional-grade connectivity in a form factor that fits almost anywhere.

Key Features

Ultra-Small Form Factor: Designed for space-constrained projects where every millimeter counts.
Dual Wireless Connectivity: WiFi 802.11 b/g/n and BLE 5.0 built in — no extra modules required.
Weldable SMD Design: Available in pre-soldered (welded) or un-soldered (not welded) variants for flexible integration onto your custom PCB.
ESP32-C3 Core: Powered by a RISC-V 32-bit single-core processor, fully compatible with the ESP-IDF and Arduino frameworks.
Compatible with Arduino & ESP Ecosystem: Works seamlessly with Arduino IDE, MicroPython, and the broader ESP32/ESP8266 toolchain.
Low Power Operation: Optimized power modes make it ideal for battery-powered IoT and wearable applications.
SMD Package Included: Each order includes the SMD module ready for your build.

Technical Specifications

Module: ESP32-C3-Zero
CPU: RISC-V 32-bit single-core
WiFi: 802.11 b/g/n (2.4 GHz)
Bluetooth: BLE 5.0
Form Factor: Ultra-small SMD
Variants: Welded (pre-soldered) / Not Welded (bare module)
Compatibility: Arduino IDE, ESP-IDF, MicroPython, ESP32/ESP8266 ecosystem

What's in the Box?

1× ESP32-C3-Zero Module (SMD) — welded or not welded, as selected

Perfect For

IoT device development
Smart home automation projects
Wireless sensor nodes
Wearable electronics
Makers, hobbyists, and professional embedded engineers

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Frequently Asked Questions

Q: What is the ESP32-C3-Zero module and what wireless standards does it support?

A: The ESP32-C3-Zero is an ultra-small SMD microcontroller module based on Espressif's ESP32-C3 RISC-V chip. It supports WiFi 802.11 b/g/n (2.4 GHz) and Bluetooth Low Energy (BLE) 5.0, making it ideal for a wide range of IoT, automation, and wireless connectivity projects.

Q: What is the difference between the "Welded" and "Not Welded" options?

A: The "Welded" (pre-soldered) option comes with headers or SMD pads already soldered, making it ready for immediate use on a breadboard or PCB. The "Not Welded" option is a bare module, giving you the flexibility to mount it directly onto your own custom PCB design using SMD soldering techniques.

Q: Is the ESP32-C3-Zero compatible with Arduino and the ESP32 ecosystem?

A: Yes! The ESP32-C3-Zero is fully compatible with the Arduino IDE, ESP-IDF, and MicroPython frameworks. It works within the broader ESP32 and ESP8266 development ecosystem, so you can use familiar libraries and code examples to get your project up and running quickly.

Q: What kinds of projects is this module best suited for?

A: This module excels in IoT device prototyping, smart home automation, wireless sensor networks, wearable electronics, and any embedded project where compact size and dual wireless connectivity (WiFi + BLE) are essential. Its low-power modes also make it well-suited for battery-operated applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.