5v2A移动电源，必须是用2A来驱动，否则无法工作。 电机驱动的型号不详，某宝里买的－MX1508－2路直流电机驱动模块 正反转 PWM调速 双H桥步进电机迷你超L298N。 小车底盘是自己改装的。 摄像头小车的设计系统是由ESP32－cam，电机驱动和电源模块来完成的。

Those little ESP32-CAM boards which mate the WiFi-enabled microcontroller with a small parallel-interface camera module have been with us for years, and while they are undeniably cool to play with, ...

There’s just some joy in an instant camera. They were never quality cameras, even in the glory days of Polaroid, but somehow the format has survived while the likes of Kodachrome have faded away.

Remember the good old PDAs or Personal Digital Assistants that people used for taking notes, keeping schedules, keeping a tab on contacts, and such stuff? Here is what can be said as a modern take on ...