ARM9315开源电路板，可供学习和借鉴，包含原理图和PCBLayout，实测可用。(ARM9315 open source circuit board for learning and reference, including schematics and PCBLayout, measured available.)

led时钟成熟可用代码,DS321,GPS,红外遥控(LED clock is mature and usable code, DS321, GPS, infrared remote control)