Purple Pi OH is a Raspberry Pi-compatible development board that uses the RK3566, a high-performance, low-power quad-core 64-bit (A55) processor chip.

Designed specifically for personal mobile internet devices and AIOT devices, it can be widely used in applications such as tablets, educational tablets, smart speakers, dictionary pens, cloud terminals, video conferencing systems, and other Android/Linux application solutions, as well as other display consumer and lightweight AI application scenarios.

Affordable Open Source Hardware: Purple Pi OH vs Raspberry Pi 4

The RK3566 integrates various powerful embedded hardware engines, providing excellent performance for high-end applications. It supports H.264 4K@60fps decoding, H.265 4K@60fps decoding, and also supports H.264/H.265 1080p@60fps decoding, as well as high-quality JPEG encoding/decoding. The built-in 3D GPU is fully compatible with OpenGL ES1.1/2.0/3.2, OpenCL2.0, and Vulkan1.0. The special MMU2D hardware engine maximizes display performance and provides a smooth operating experience. The embedded NPU supports INT8/INT16 mixed operations. Additionally, due to its strong compatibility, it can convert network models based on TensorFlow/MXNet/PyTorch/Caffe and other frameworks.

1.2 Product Features

Supports up to 8GB high-speed LPDDR4, with a rate of up to 1056MHz
1T computing power NPU, supports INT8/INT16, supports TensorFlow/MXNet/PyTorch/Caffe frameworks
1 HDMI 2.0 port supports 4K@60Hz or 1080P@120Hz
1 4-Lane MIPI-DSI, supports up to 1080P@60Hz
1 4-Lane MIPI-CSI camera
Supports multiple screens displaying simultaneously
1 adaptive Gigabit Ethernet port
WIFI and Bluetooth wireless communication
Onboard 1 USB3.0 and 3 USB2.0 ports
Very compact PCBA size, 85mm*56mm

Purple Pi OH back view

Purple Pi OH front size diagram

Purple Pi OH back size diagram

2. Technical Parameters

2.1 Hardware Parameters

Basic Parameters
SOC	RockChip RK3566
CPU	Quad-core 64-bit Cortex-A55 processor, with a maximum frequency of 1.8GHz
GPU	Mali-G52 1-Core-2EE Supports OpenGL ES 1.1/2.0/3.2, OpenCL 2.0, Vulkan 1.1 Embedded high-performance 2D acceleration hardware
NPU	Neural network acceleration engine, processing performance up to 1 TOPS Supports INT8/INT16/FP16/BFP16 MAC mixed operations Supports deep learning frameworks such as TensorFlow, TF-lite, Pytorch, Caffe, ONNX, MXNet, Keras, Darknet models
VPU	Supports 4K 60fps H.264/H.265/VP9 video decoding Supports 1080P 100fps H.264/H.265 video encoding Supports 8M ISP
Memory	LPDDR4 default 2GB/4GB (supports up to 8GB)
Storage	eMMC default 16GB/32GB (optional 16GB/32GB/64GB)
Hardware Parameters
Ethernet	1 × Gigabit Ethernet (1000 Mbps)
Wireless Network	Purple Pi OH (supports single-band 2.4G WIFI) Purple Pi OH Pro (supports dual-band 2.4G/5.8G WIFI) Supports BT4.2 and above
Display Interface	Supports dual-screen display 1 × HDMI2.0, supports 4K@60fps output 1 × MIPI_DSI_TX, supports 1920*1080@60fps output
Camera	1 × MIPI_CSI camera interface, supports single 4-Lane 13M Sensor.
Audio Interface	1 × HDMI audio output 1 × headphone MIC audio input 1 × headphone audio output
Expansion Interface	1 × USB 3.0 HOST (standard TYPE-A female connector) 3 × USB 2.0 HOST (standard TYPE-A female connector) 1 × USB 2.0 device (standard TYPE-C female connector) 1 × Debug_UART (UART2) 1 × SPI 1 × I2C 3 × UART 1 × TP port (I2C)

2.2 Operating Environment

Operating Environment
Operating Temperature	0℃～70℃
Operating Humidity	0~90% RH non-condensing
Storage Temperature	-40℃～85℃

2.3 System Support

Serial Number	Operating System
1	Android 11
2	Debian 10
3	HarmonyOS OpenHarmony
4	Ubuntu
5	Kirin OS

3. Main Interface Definitions

Purple Pi OH front interface position diagram

Purple Pi OH back interface position diagram

Purple Pi OH front interface indication diagram

Purple Pi OH back interface indication diagram

Purple Pi OH is a product launched by Shenzhen Tactile Intelligence [INDUSTIO], aHarmonyOS open source motherboard, and as a high cost-performance development board for popularizing open source HarmonyOS, it is compatible with the latest released OpenHarmony 3.2 release version,open Harmony system SDK, priced as low as 200+ yuan! It is a blessing for open source HarmonyOS players. Don’t regret not getting it!!

Purple PI OH contributes to the ecological popularization of the domestic open source HarmonyOS system and is highly recommended by HarmonyOS Connect ISV partners.

Product Introduction

Purple Pi OH, as an open source motherboard that pays tribute to the Raspberry Pi, uses the Rockchip RK3566 (Cortex-A55) quad-core 64-bit super powerful CPU, with a maximum frequency of up to 1.8 GHz, computing power up to 1 Tops, supports INT8/INT16, supports TensorFlow/MXNet/PyTorch/Caffe frameworks, multiple video outputs and inputs, and supports 4K, H.265/H.264 video decoding, with rich interfaces.

Rich gameplay, supports various systems such as OpenHarmony, Ubuntu, Debian, Android, and provides rich open-source materials.

Key Features

Low power consumption and high performance, equipped with a large number of commonly used peripherals, can be used as a high-performance single-board computer and embedded motherboard, mainly aimed at makers and embedded beginners, suitable for various scenarios such as display, control, and network transmission.
Uses Rockchip RK3566 as the main chip, equipped with Gigabit Ethernet port, USB3.0, USB2.0, MiniPCle, HDMI, MIPI screen interface, MIPI camera interface, audio interface, infrared receiver, TF card slot, etc., leading out 40 unused pins, compatible with Raspberry Pi interfaces.
Built-in independent NPU computing power can reach 1 TOPS, suitable for lightweight AI applications.
Official support for mainstream Android 11, Debian 10, Ubuntu 20.4,OpenHarmony3.2 release, Buildroot, and Linux operating system images, applicable to various different application environments.
Completely open source, provides rich materials, offers complete SDK driver development packages, design schematics, and other resources, facilitating user use and secondary development.
HarmonyOS enthusiasts’ technical exchange group is full of experts.

Interface Marking Diagram

Hardware Size Diagram?

Hardware Configuration

Development Materials

Provides complete development materials, you can log in to Shenzhen Tactile Intelligence official website – Product Center – Development Board – RK3566 series material page for viewing and downloading!