Super mini & low-cost Linux development board based on Allwinner F1C200s (produced by Zhihuijun)

I found that Zhihui Jun has open sourced a super mini & low-cost Linux development board based on the Allwinner F1C200s chip. Although the ARM9 architecture is relatively old, the minimalist package with built-in SIP DDR is very suitable as an entry-level board for Linux development. The project is called Plabck Pi. It has open sourced all the hardware and software (u-boot, kernel, root-fs) information. The kernel version is 5.4.77. The transplanted Debian system is basically the same as Ubuntu (the memory requirements of Ubuntu Core are too high) unable to run).
Onboard resources:
an OLED 128x80,
a microphone & amplifier, which can be connected to external speakers.
Two Type-C interfaces with different functions provide USB to serial port and USB-OTG functions respectively.
A USB-A port is used for external devices.
The SD card slot
leads to most of the The cost of the IO
board should be less than 50RMB, and it provides a lot of information. It is very suitable for novices to use as a development board to learn Linux.