AvaotaF1 Development Board Offers Allwinner V821 SoC, 64MB RAM, MIPI Camera, SPI Display, and Wi-Fi in Coin-Size Form

The AvaotaF1 DevKit is a compact, Pico-sized embedded development board designed for flexible and scalable DIY electronics and embedded system projects. Featuring the Allwinner V821L2-WXX main chip with integrated 32-bit RISC-V CPU, 64MB DDR2 and 32MB NOR Flash storage, this ultra-thin board—just the size of a 1-yuan coin—comes equipped with a variety of powerful features.

It supports a standard 2.54mm pitch header interface for breadboard compatibility and offers extensive GPIO options via dual 30-pin headers. Key hardware capabilities include a MIPI CSI camera interface (supporting 1920×1080@30fps video), analog microphone input, microSD card slot, and a 2.4GHz Wi-Fi ceramic antenna for wireless communication. A 3.5-inch/1.54-inch SPI display, FEL burn button, LED indicator, and Type-C USB (supporting power, data, and debugging) are also included. The AvaotaF1 V821 Core DevKit supports accessories like the GC2083 MIPI camera and various SPI screens, making it ideal for embedded development, image and audio processing, smart devices, IoT applications, and prototyping.

AvaotaF1 Development Board Specifications:

• SoC: Allwinner V821L2-WXX ARM processor
  • CPU:
    • 32-bit RISC-V CPU @ 1.2GHz with 16KB L1 D/I cache, 128KB L2 cache
    • 32-bit RISC-V MCU @ 600 MHz with 16KB L1 I-cache, 8KB L1 D-cache
• System Memory: 64MB DDR2 (internal)
• Storage:
  • 32MB NOR Flash (PY25Q256)
  • microSD card socket
• Wireless: 2.4GHz Wi-Fi via ceramic antenna
• Display Interface:
  • SPI interface
  • Optional 3.5-inch (320×480) or 1.54-inch (240×240) SPI displays
• Camera Interface: MIPI CSI interface, supports up to 1920×1080 @ 30fps
• Audio: 1x analog microphone
• USB: 1x USB Type-C port for power, data transfer, and serial debugging
• Expansion:
  • Dual 30-pin headers
  • Up to 28x GPIOs
• Debugging: UART serial debugging and ADB over USB
• Misc:
  • 1x status LED
  • 1x FEL burn button
• Power Management:
  • 5V via USB-C port
  • Integrated EA3036 PMU
• Dimensions: 35 x 22 mm (6-layer design PCB)

It runs on the Tina Linux 5.0 system, allowing direct development and debugging via UART or USB ADB. According to a forum discussion, Tina Linux is based on OpenWrt 21.02. You can find documentation for the Allwinner V821, including the datasheet, Tina Linux SDK, and other resources, on Allwinner’s official documentation site. The hardware design files, including PDF schematics, PCB layout, Gerber files, and Bill of Materials (BoM), are available on GitHub.

As for the knowledge, the Allwinner V821 SoC comes in three different versions. The V821L2-WXX, used in the Avaota F1, features Serial RGB/i8080/SPI display interfaces, built-in Wi-Fi with low-power keep-alive, and an RTC. The V821L2-XXX variant supports only the SPI display interface and lacks both Wi-Fi and RTC functionality. The third version, V821M2-WXX, includes an SPI display interface and Wi-Fi but does not have an RTC.

Previously, we have covered other boards based on the Allwinner SoC, including the Forlinx OK536-C, the OrangePi 4A, the Yuzuki Chameleon, the Banana Pi BPI-M2 Ultra, and others. Feel free to check those out for your reference.

At the time of writing, the Avaota F1 is available for purchase on Taobao, priced at 49.9 CNY or approximately $7.

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