This was last week when I made a portable Raspberry Pi computer with an LCD display with a composite video interface, a raspberry pie and a case, and a wireless keyboard with a touchpad and a 5000 mA mobile power supply. Show off here today.
The bottom mobile power supply has two USB ports. The 2.1A output interface connects to the Raspberry Pi's micro USB port, while the other 1A interface is connected to the LCD for power. The LCD's instructions say that the power supply requires a 6V-20V DC input, but thanks to the 5V output of the mobile power supply, it can also work. But the power interface of the LCD display is round, so I can only purchase a 2.1mm round-hole screw terminal adapter to convert, the hole is naturally connected to the display, and then cut off with an old USB cable. At one end, press the metal wire inside to the screw of the terminal block, and the remaining USB interface on the other end is plugged into the mobile power supply and it is OK.
In addition, an RCA male to male connector is used, so that no special RCA line is needed.
Finally, the input device is left. I bought a keyboard with a touchpad online, which is quite cool. . .
But there is a problem, that is, the touchpad is sometimes not stable, and the mouse cursor occasionally gets stuck at the bottom of the screen and cannot move. The strange thing is that the same keyboard I bought by a friend didn't have this problem. I really don't understand. In addition to a little problem with the touchpad, the keyboard keys are quite solid and work well.
In fact, this portable computer is suitable for using the command line in the LXDE environment (full name Lightweight X11 Desktop Environment, a lightweight desktop environment). The command line font in the LXTerminal terminal can be enlarged for easy viewing. Of course, playing "Quake" on this machine is also very good!
I tested battery life by continuously executing the hello_triangle OpenGL ES demo (in the /opt/vc/src/hello_pi directory). The battery continues to execute the program for more than 4 hours under full conditions. I am going to do more tests later.
10 M Light Tower
A 10 M light tower typically refers to a mobile light tower that is 10 meters in height. These towers are commonly used in construction, mining, and outdoor events to provide lighting in areas where there is limited or no access to electricity.
The tower is equipped with multiple high-intensity lights that are mounted at the top and can be adjusted to provide wide coverage. The lights are usually powered by a generator or battery pack that is housed within the tower.
The tower itself is usually mounted on a trailer or skid for easy transportation and mobility. It can be easily moved to different locations as needed and set up quickly.
The 10 M light tower is designed to provide bright and efficient lighting for large areas, making it ideal for nighttime construction work, outdoor events, or emergency situations. It is often used in conjunction with other equipment, such as cranes or generators, to provide a complete lighting solution.
Overall, a 10 M light tower is a versatile and practical lighting solution for various industries and applications.
10 M Light Tower,High Mast Mobile Light Tower,Construction Lighting Tower,Kubota Engine Lighting Towers
Grandwatt Electric Corp. , https://www.grandwattelectric.com