Add blinka's md file

_blinka/radxa_zero.md

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+---
+layout: download
+board_id: "radxa_zero"
+title: "Radxa Zero Download"
+name: "Radxa Zero"
+manufacturer: "Radxa"
+board_url: "https://wiki.radxa.com/Zero"
+board_image: "radxa_zero.jpg"
+downloads_display: true
+blinka: true
+date_added: "2022-6-2"
+features: 
+  - Wi-Fi
+  - Bluetooth/BTLE
+  - USB-C
+  - Breadboard-Friendly
+---
+
+Radxa Zero is an ultra thin SBC in small form factor with powerful performance based on Amlogic S905Y2. It can run Android and selected Linux distributions.
+
+Radxa Zero features a quad core 64-bit ARM processor, up to 4GB 32bit LPDDR4 memory, HDMI output at 4K@60, WiFi and Bluetooth connectivity, USB 3.0, and 40-pin GPIO header. Additionally, the power port can also be used for USB 2.0 OTG to connect more peripheral.
+
+## Technical details
+* Size 66mm x 30mm
+* Amlogic S905Y2 64bit quad core processor
+* Quad Cortex-A53, frequency 1.8Ghz, 12nm
+* Mali G31 MP2 GPU, supports OpenGL ES 1.1 /2.0 /3.1 /3.2, Vulkan 1.1, Open CL 1.1 1.2, 2.0 Full Profile
+* 64bit dual channel LPDDR4@3200Mb/s, 1GB/ 2GB or 4GB
+* Wifi/BT with external antenna support
+* WIFI4/BLE4 and WIFI4/BLE5 available for different models!
+* soldered high performance eMMC 5.1 with capacities of 8GB/ 16GB
+* uSD slot supports up to 128G uSD card
+* HDMI 2.1, 4K@60 HDR
+* HD codec H265/VP9 decode 4Kx2K@60
+* USB 3.0 Type-C HOST x1
+* USB 2.0 Type-C OTG x1
+* Network (depending on the model)
+    - Wireless 802.11 abgn wifi 2,4GHz, Bluetooth 4.2
+    - Wireless 802.11 ac wifi 2,4/5GHz, Bluetooth 5.0
+* IO 40-pin expansion header (depending on the model):
+    - 1 x UART
+    - 2 x SPI bus
+    - 2 x I2C bus
+    - 1 x PCM/I2S
+    - 1 x SPDIF
+    - 1 x PWM
+    - 1 x ADC
+    - 6 x GPIO
+    - 2 x 5V DC power in
+    - 2 x 3.3V power pin
+
+## Tutorials
+* [Radxa Zero - Getting Started](https://wiki.radxa.com/Zero/getting_started)
+## Purchase
+* [ALLNET.CHINA](https://shop.allnetchina.cn/products/copy-of-radxa-zero)
+
+## Contribute
+
+Have some info to add for this board? Edit the source for this page [here](https://github.com/adafruit/circuitpython-org/edit/master/_blinka/{{ page.board_id }}.md).