ANAVI Miracle Emitter: An Open Source RISC-V Board to Light Up Your World Powered by XIAO ESP32-C3

ANAVI Miracle Emitter is a compact, open-source development board designed for LED control, home automation, and smart lighting created by ANAVI Technology. Powered by Seeed Studio XIAO ESP32-C3 microcontroller running RISC-V architecture, it offers built-in Wi-Fi and Bluetooth 5 (LE) capabilities. Whether you’re a maker, student, or automation enthusiast, this board is tailor-made for creative LED projects with seamless integration into platforms like Home Assistant and WLED. Currently, this board is live via a CrowSupply campaign. Click here to back the project to show your support.

Hardwares Used

Here’s what’s under the hood of the ANAVI Miracle Emitter:

- Seeed Studio XIAO ESP32-C3
- Custom PCB and acrylic enclosure designed using KiCad
  - Peripheral Support: Mini OLED display, GPIO pins, UART pins, button, three slots for I²C sensors
- Compatible with popular LEDs like Neopixels, WS2811, WS2812B, and TM1809

How the ANAVI Miracle Emitter Works

The ANAVI Miracle Emitter is powered by an open-source firmware and it is fully compatible with Home Assistant, a leading platform for smart home automation. Out of the box, it comes preloaded with an Arduino-based firmware that communicates over MQTT.

One of the most compelling features of the Miracle Emitter is its flexibility. While it ships with default firmware, users are free to swap it out for custom alternatives: a popular choice is WLED. WLED is a powerful, open-source firmware specifically built for controlling addressable LED strips like WS2812B (NeoPixels), WS2811, and TM1809. It runs on both ESP32 and ESP8266 boards, offering a sleek web-based interface, real-time control, and native Home Assistant compatibility.

Flashing WLED is simple and can be done directly from a web browser – no complex setup required. This makes the ANAVI Miracle Emitter ideal for advanced lighting projects, whether you’re syncing colors to music, setting the mood for holidays, or building an ambient-aware smart desk.

Why XIAO ESP32C3?

When asked about why XIAO ESP32-C3 is selected for this new project ANAVI Miracle Emitter, Leon Anavi, the founder of ANAVI Technology, mentions,

“The ESP32-C3 supports Wi-Fi 802.11b/g/n and Bluetooth 5 Low Energy, making it a solid choice for connected devices. What truly sets it apart is its 32-bit RISC-V core, offering a modern, efficient open architecture. We chose the XIAO ESP32C3 module for its compact footprint, USB-C connector and castellated holes which are perfect for surface-mount assembly (SMT) on printed circuit boards.”

Leon, who is a veteran software engineer and open source champion, has spent over a decade shaping projects like the Yocto Project and OpenEmbedded while co-maintaining critical embedded systems platforms. In his spare time he also crafts open hardware IoT and mechanical keyboards using free tools like KiCAD, bringing the open source ethos from software into the physical world.

This is not the first product Leon and his team at ANAVI Technology developed based on our tiny Seeed Studio XIAO dev boards. Right ahead of the ANAVI Miracle Emitter, ANAVI Technology has released a series of cool gadgets and HIDs of ANAVI Dev Mic, ANAVI Macro Pad 10 & Knobs, ANAVI Handle, ANAVI Macro Pad 12 & Arrows, all based on XIAO RP2040.

Thanks to their production-optimized SMD (Surface Mount Device) design with standardized stamp holes, Seeed Studio XIAO series dev boards are perfect for commercial PCBA (Printed Circuit Board Assembly) integration.

“To ensure consistently high quality, the ANAVI Miracle Emitter’s printed circuit board (PCB) features a black solder mask and a durable gold surface finish. The board was designed using KiCad, a free and open source electronic design automation (EDA) tool, with both the schematics and complete project files publicly available on GitHub. Special attention was given to optimizing the design for low-volume manufacturing, including the use of castellated holes on the XIAO ESP32C3 module, which are ideal for surface-mount technology (SMT) assembly. No signal traces are placed beneath the module to avoid interference with the antenna. The PCB also includes a cutout to provide easy access to the JTAG pads and battery connector of the XIAO ESP32C3.”

“Creating open source hardware using expensive, proprietary software makes no sense. For this reason, it is strongly recommended to use free and open source tools like KiCad for hardware design. Embracing open source software not only aligns with the spirit of open hardware, but also fosters innovation, promotes knowledge sharing, and helps extend the lifespan of devices through transparency and community collaboration.”

Bring Your Smart Lighting Ideas to Life

Ready to bring your smart lighting or home automation ideas to life? You can build your own ANAVI Miracle Emitter using the fully open-source hardware, firmware, schematics, and documentation available on GitHub — perfect for developers and makers who love to DIY.

Prefer a ready-made solution? You can also support the project and get your own by backing it on Crowd Supply. It’s a great way to support open-source innovation and get a professionally assembled and tested board delivered to your doorstep.

End Note

Hey community, we’re curating a monthly newsletter centering around the beloved Seeed Studio XIAO. If you want to stay up-to-date with:

️ Cool Projects from the Community to get inspiration and tutorials
Product Updates: firmware update, new product spoiler
Wiki Updates: new wikis + wiki contribution
News: events, contests, and other community stuff