3号资料\134158g9o98fx2srfnj8nw.rar .......\小车原理图\主板.pdf .......\..........\从单片机.pdf .......\..........\传感器.pdf .......\..........\传感器细节.pdf .......\..........\电机驱动.pdf .......\..........\电源.pdf .......\小车原理图 3号资料