Allwinner T113-S3 Smart Home 86 Screen

I don't know if you still remember the V3S development board released some time ago. Due to the inability to complete hardware decoding, the author found a chip T113-S3 released by Allwinner. The chip uses dual-core A7 and supports the Tina Linux SDK provided by Allwinner. The documentation is complete. After a period of adjustment, the project can be mass-produced.

Update log

2024-04-27 V5 verification done, update Tina 5.0 test mirroring t113_linux_pi_uart0_480

2024-03-29 update build manual, update SD card, SPI Nand mirroring, fix boot logo problem, increase communication group

2024-03-21 updated build manual, updated SD card, SPI Nand mirroring, official support for SPI Nand

2024-02-13 document creation

2024-01-24 Project Initiation

Project description

The project is an 86-type smart touch screen solution based on the Allwinner T113-S3 chip, which is applied in smart home scenarios. The Allwinner T113-S3 chip integrates advanced processor technology and is designed specifically to meet the performance, power consumption, and wireless connectivity requirements of smart home control systems.

Project characteristics

• 4 inch 86 screen, RGB interface, resolution 480 * 480
• Allwinner T113-S3 controller, dual-core A7, 128M memory, supports hardware decoding, and D1s Pin to Pin, supports mutual replacement
• RTL8723 WIFI module for connecting to WIFI.
• SPI Nand, supports system boot from SPI Nand
• Dual USB interfaces, one of which supports Host/Device and the other only supports Host
• Two serial ports extended through PH2.0 for functions such as RS485
• Adapt to Allwinner Tina-Linux, support quick start

Hardware description

• Cost: PCB board 58 yuan + screen 69 yuan, about 127 yuan
• Main control chip: T113-S3 (can be replaced by D1s)
• WIFI module: RTL8723BS (planned to use RTL8723DS instead)
• RTC chip: RX8025T-UB/UC (driver is a bit problematic, Tina-Linux temporarily unable to support)
• Serial to USB: CH340N
• SPI Nand: W25N01G (not tested yet)
• Backlight driver: RY3730
• Chip power supply: SY8089AAAC
• Screen: ST7701 86 screen RGB interface 480x480

Hardware design reference:

[Allwinner Online x YuzukiHD] Nezha D1s development board

https://oshwhub.com/GloomyGhost/34e1fe88b79f49b891df150db9c34cc4

Reference purchase link

• T113-S3：https://item.taobao.com/item.htm?_u=d2dklb454adf&id=688651947152&spm=a1z09.2.0.0.59e42e8d2pGc20
• Screen, choose (display + touch screen): https://item.taobao.com/item.htm?_u=d2dklb4513ca&id=651209491676&spm=a1z09.2.0.0.59e42e8d2pGc20
• Headphone jack, choose (PJ-342 gold-plated, headphone jack 3.5mm (5 pieces)): https://detail.tmall.com/item.htm?_u=d2dklb455626&id=14476732895&spm=a1z09.2.0.0.59e42e8d2pGc20
• USB base, choose (four-foot patch (vinyl/edge)): https://item.taobao.com/item.htm?_u=d2dklb4573d8&id=674663700649&spm=a1z09.2.0.0.59e42e8d2pGc20
• Welding copper column, choose (M3 * 6.5 * 5 [10] copper color): https://detail.tmall.com/item.htm?id=651557523848&spm=a1z09.2.0.0.59e42e8d2pGc20&_u=d2dklb45808d
• SD card holder, Type-C holder: refer to the Li Chuang Mall for purchase
• W25N01G: Taobao choose the right to buy

Notes on mass production

RTC

RX8025T current software adaptation problems, can be air soldered using T113-S3 built-in RTC

Welded copper column

When welding by hand, apply a circle of solder paste directly to the position of the bolt hole, and then heat it with an air gun or heating table.

Acrylic back panel

Select the "backplane" PCB, only select the mechanical layer export, and send it to Taobao for cutting

Test firmware

SD card, RTL8723BS wifi: please refer to the attachment tina_t113 86_uart0

Firmware burning

Insert the SD card into the computer, open PhoenixCard.exe, click on firmware, load the img firmware, then select the boot card, and click on burn card. It should be noted that the boot card must be selected, otherwise it will fail to start!