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1.1 Introduction & Specifications

  • The Smart Pi One uses the Allwinner H3 Soc. It integrates Ethernet, IR receiver, video/audio output and supports HDMI and AVOUT. It can be powered via the MicroUSB port (DC 5V/2A and POWER DELIVERY CHARGER).

  • In such a small board it still integrates rich interfaces and ports. HDMI, Ethernet, USB-Host, USB-OTG, DVP camera interface and AVOUT (audio and video) it has an onboard Microphone, IR receiver, a serial debug port and a Raspberry Pi compatible 40 pin GPIO pin header.

Specifications

  • CPU: Allwinner H3, Quad-core Cortex-A7-1.3GHz
  • GPU: Mali400MP2@600MHz，Supports OpenGL ES2.0
  • DDR3 RAM: 1GB
  • Connectivity: 10/100M Ethernet
  • Audio: 3.5mm audio jack/Via HDMI
  • Microphone: Onboard microphone
  • IR Receiver: Onboard IR receiver
  • USB Host: USB 2.0 x 3 Type A
  • MicroSD Slot: 1
  • MicroUSB: for data transmission and power input, OTG
  • Video Output: HDMI 1.4 1080P, CVBS
  • DVP Camera Interface: 24pin, 0.5mm pitch FPC seat
  • Debug Serial Port: 4Pin, 2.54mm pitch pin header
  • LED: Power led & Status led
  • GPIO: 2.54mm spacing 40pin, compatible with Raspberry Pi's GPIO. It includes UART, SPI, I2C, IO etc
  • User Key: GPIO Key x 1, Reset x 1
  • PC Size: 72 mm x 60 mm
  • Power Supply: DC 5V/2A or POWER DELIVERY CHARGER
  • Working Temperature: -30℃ to 70℃
  • Weight: 33g
  • OS/Software: YumiOS, Debian 12(Armbian), Ubuntu(Armbian)

1.2 Software Features

Official Linux Server Image: https://wiki.yumi-lab.com/SmartPI/SmartPi_Linux/

1.3 Layout

Top view

[Top view]

bottom view

[Bottom view]

1.4 Diagram

GPIO Pin Spec

Pin# Name Linux gpio Pin# Name Linux gpio
1 SYS_3.3V 2 VDD_5V
3 I2C0_SDA/GPIOA12 4 VDD_5V
5 I2C0_SCL/GPIOA11 6 GND
7 GPIOG11 203 8 UART1_TX/GPIOG6 198
9 GND 10 UART1_RX/GPIOG7 199
11 UART2_TX/GPIOA0 0 12 GPIOA6 6
13 UART2_RTS/GPIOA2 2 14 GND
15 UART2_CTS/GPIOA3 3 16 UART1_RTS/GPIOG8 200
17 SYS_3.3V 18 UART1_CTS/GPIOG9 201
19 SPI0_MOSI/GPIOC0 64 20 GND
21 SPI0_MISO/GPIOC1 65 22 UART2_RX/GPIOA1 1
23 SPI0_CLK/GPIOC2 66 24 SPI0_CS/GPIOC3 67
25 GND 26 SPDIF-OUT/GPIOA17 17
27 I2C1_SDA/GPIOA19/PCM0_CLK/I2S0_BCK 19 28 I2C1_SCL/GPIOA18/PCM0_SYNC/I2S0_LRCK 18
29 GPIOA20/PCM0_DOUT/I2S0_SDOUT 20 30 GND
31 GPIOA21/PCM0_DIN/I2S0_SDIN 21 32 GPIOA7 7
33 GPIOA8 8 34 GND
35 UART3_CTS/SPI1_MISO/GPIOA16 16 36 UART3_TX/SPI1_CS/GPIOA13 13
37 GPIOA9 9 38 UART3_RTS/SPI1_MOSI/GPIOA15 15
39 GND 40 UART3_RX/SPI1_CLK/GPIOA14 14

Debug Port（UART0）

Pin# Name
1 GND
2 VDD_5V
3 UART_TXD0/GPIOA4
4 UART_RXD0/GPIOA5/PWM0

DVP Camera IF Pin Spec

Pin# Name Description
1, 2 SYS_3.3V 3.3V power output, to camera modules
7,9,13,15,24 GND Gound, 0V
3 I2C2_SCL I2C Clock Signal
4 I2C2_SDA I2C Data Signal
5 GPIOE15 Regular GPIO, control signals output to camera modules
6 GPIOE14 Regular GPIO, control signals output to camera modules
8 MCLK Clock signals output to camera modules
10 NC Not Connected
11 VSYNC vertical synchronization to CPU　from camera modules
12 HREF/HSYNC HREF/HSYNC signal to CPU from camera modules
14 PCLK PCLK signal to CPU from camera modules
16-23 Data bit7-0 data signals

1.5 Board Dimension

Board dimension view