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Affordable Radxa ZERO 3W Featuring Up to 8GB RAM and Onboard eMMC Storage

Feb 11, 2024 — by Giorgio Mendoza 756 views

Radxa’s ZERO 3W is an ultra-small single board computer with high-performance capabilities. Based on the Rockchip RK3566 and supporting Wi-Fi6 / BT 5.4, this compact device is designed to cater to a wide range of users, from IoT developers to hobbyists.

Equipped with the Rockchip RK3566, the ZERO 3W supports various graphics standards like OpenGL and Vulkan 1.1. 

  • RK3566 — Quad-core 64-bit Arm Cortex-A55 (up to 1.8GHz); Arm Mali G52 2EE GPU; 0.8 TOPS@INT8 NPU

Radxa ZERO 3W board overview
(click image to enlarge)

RAM options are flexible including 1GB, 2GB, 4GB, and 8GB LPDDR4, along with various onboard eMMC storage capacities such as 8GB, 16GB, 32GB, and 64GB. Additionally, it features a Micro SD Card Slot for expanded storage and supports booting from both the eMMC and Micro SD Card.

Radxa ZERO 3W Wi-Fi/BT module
(click image to enlarge)

Featuring Wi-Fi 6 (IEEE 802.11b/g/n/ac/ax) and Bluetooth 5.4 with BLE, the device offers lower latency and increased bandwidth. Additionally, it allows for software-controlled selection between external and onboard antenna options.

The board provides a range of ports including one USB 2.0 OTG Type-C, one USB 3.0 Host Type-C, and a Micro HDMI port supporting 1080P@60fps. It also has a 22-pin MIPI CSI camera port and a versatile 40-pin GPIO array. For multimedia processing, it supports H.264/H.265 decoding up to 4K@60fps and encoding up to 1080P@60fps.

Radxa ZERO 3W camera interface
(click images to enlarge)

Radxa indicates that the ZERO 3W is optimal between 0℃ to 50°C, throttling speeds above 80°C. External cooling is advised for high-performance use. It supports Debian, Ubuntu, and other Linux distributions, and meets CE and FCC standards.

Specifications listed for the Radxa ZERO 3W include:

  • Memory/Storage:
    • Up to 8GB LPDDR4
    • 1x Micro SD Card slot
  • Display/Audio:
    • 1x Micro HDMI support 1080P@60fps
  • Camera:
    • 1x MIPI CSI camera port
  • Connectivity:
    • Wi-Fi 6 & BT 5.4 w/ BLE support
  • I/O Interfaces:
    • 40x GPIO expansion header
  • USB:
    • 1x USB 2.0 OTG Type-C port
    • 1x USB 3.0 Host Type-C port
  • Other Features:
    • 1x Maskroom button
  • Operating Temperature:
    • 0℃ to 80℃
  • Power:
    •  5V/2A DC (via USB Type-C) 
  • Mechanical:
    •  65 mm x 30mm

Further information

The Radxa ZERO 3W can be purchased from several online distributors, including Arace Tech, AllNetChina, and RS Components. Pricing begins at $16.00 for the 1GB RAM model with soldered headers on Arace Tech, with a similar configuration available on AllNetChina for $19.00.

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