Radxa ZERO 3W – A Compact RK3566 SBC with Bluetooth 5.4 and Wi-Fi 6

Radxa ZERO 3W – A Compact RK3566 SBC with Bluetooth 5.4 and Wi-Fi 6


The Radxa ZERO 3W, powered by the Rockchip RK3566, is an ultra-small single-board computer designed for IoT developers and hobbyists, featuring Wi-Fi 6, Bluetooth 5.4, and support for various graphics standards including OpenGL and Vulkan 1.1.

A few posts back we covered similar SBCs powered by the RK3566 SBC like Orange Pi 3B, Radxa’s ROCK 3C, and  Firefly ROC-RK3566 feel free to check those out if you are interested in the topic.

The ZERO 3W is equipped with the Rockchip RK3566, featuring a quad-core 64-bit Arm Cortex-A55 CPU running up to 1.8GHz, an Arm Mali G52 2EE GPU, and a 0.8 TOPS@INT8 NPU for efficient image processing. It supports graphics standards like OpenGL and Vulkan 1.1, making it capable of handling advanced multimedia and gaming tasks.

The board offers flexible RAM options (1GB, 2GB, 4GB, 8GB LPDDR4) and eMMC storage capacities (8GB, 16GB, 32GB, 64GB), plus a Micro SD Card Slot for additional storage, it also supports boot from eMMC or Micro SD. Additionally, it features Wi-Fi 6 and Bluetooth 5.4 for high-speed connectivity and allows selection between external and onboard antennas.

The Radxa ZERO 3W features USB 2.0 OTG and USB 3.0 Type-C ports, a Micro HDMI output supporting 1080P@60fps, a 22-pin MIPI CSI camera connector, and a 40-pin GPIO for versatile connections. It excels in multimedia with 4K@60fps H.264/H.265 video decoding and 1080P@60fps encoding capabilities. Designed for optimal performance between 0℃ and 50°C, it throttles at temperatures above 80°C; The board supports Debian, Ubuntu, and other Linux distributions, complying with CE and FCC standards for quality and safety.

Radxa ZERO 3W Specifications:

  • Processor: Rockchip RK3566 64-bit quad-core Arm Cortex-A55 @ 1.6GHz
  • GPU: Arm Mali-G52-2EE; supports OpenGL ES 1.1/2.0/3.2, Vulkan 1.1, OpenCL 2.0
  • Memory: LPDDR4 options of 1GB, 2GB, 4GB, 8GB
  • Power: USB Type-C port, requires adapter ≥5W
  • Wireless Connectivity:
    • WiFi 4 (802.11 a/b/g/n) + BT with onboard antenna and uFL connector
    • WiFi 6 (802.11 a/b/g/n/ac/ax) + BT 5.4 with onboard antenna and uFL connector
  • Storage:
    • Onboard eMMC 5.1: 8GB, 16GB, 32GB, 64GB
    • MicroSD slot supporting up to 128GB
  • Display: Micro HDMI output supporting 1080p@60fps
  • Multimedia:
    • H.264/H.265 decoder up to 4K@60fps
    • H.264/H.265 encoder up to 1080p@60fps
  • USB Ports:
    • 1x USB 3.0 Type-C HOST
    • 1x USB 2.0 Type-C OTG (for power and data)
  • Camera Interface: 1x MIPI CSI
  • Networking: Supports 802.11 BGN (WiFi 4), Bluetooth 5.0, 802.11 ac/ax (WiFi 6), Bluetooth 5.4
  • Expansion Header: 40-pin with UART, SPI, I2C, PCM/I2S, PWM, GPIO, 5V DC power in, 3.3V power pin
  • Software Support: Debian/Ubuntu Linux, ARMv8 Instruction Set, hardware access/control library for Linux
  • Other Features: Maskrom button
  • Dimensions: 65mm x 30mm

You can buy the Radxa ZERO 3W from various online retailers such as Arace Tech, AllNetChina, AliExpress, and RS Components. The starting price is $16.00 for the 1GB RAM version with pre-soldered headers at Arace Tech, while AllNetChina offers the same configuration for $19.00.

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About Debashis Das

Tech Content Creator | Hardware Design Engineer | IoT Enthusiast | Digital Storyteller | Video Creator | From crafting digital dialogues at Semicon Media to orchestrating online engagement at Electronics-lab.com, my journey is about making tech talk interesting and accessible. In the quiet corners of the day, I advocate for easier tech education, one tutorial at a time. Let's connect and keep the digital dialogue going!

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