Building a USB-C touchscreen monitor (new for modern devices)

Summary

In this video, the creator demonstrates how to build a USB Type-C touchscreen monitor with a sleek brass construction. The project combines old and new tech by using an LCD panel from a dead laptop, paired with an advanced control board for features like 4K resolution and touch support. The frame is crafted from brass for a slim, elegant look, and a custom battery and control chamber are integrated. The monitor is versatile, working with laptops, smartphones, and even offering Bluetooth keyboard and mouse support. The project concludes with the addition of small, high-quality speakers to complete the setup.

Takeaways

• 😀 Brass is chosen for the monitor build due to its sleek, slim design and aesthetic appeal.
• 📱 The USB Type-C touchscreen monitor can be used with smartphones, laptops, and modern devices for flexible functionality.
• 💰 For budget-friendly options, LCD panels can be sourced from old or broken laptops, requiring a control board for external use.
• 🎥 New control boards and displays offer advanced features like 4K resolution, high refresh rates, touch support, and USB Type-C video input.
• 🔧 Brass is used as a frame material, offering strength and a thinner, more elegant construction compared to MDF.
• 🔥 Soldering the brass frame together requires careful preparation, including using flux and a blowtorch for proper soldering.
• ⚒️ Polishing brass with sandpaper and metal polish gives it a shiny, sleek finish that looks aesthetically appealing.
• 🛠️ Hinges for the monitor stand are created using brass U-channel, which provides adjustable angles for the screen.
• 🔋 A smartphone battery is repurposed to power the monitor, with a PCB protection board ensuring safe charging and discharging.
• 🎶 Small speakers with brass mesh covers are added to the build, maintaining the slim design while enhancing the sound quality.
• 🖥️ The monitor is versatile, able to function with game consoles, smartphones (especially for desktop modes), and even allows video calls by mounting a phone behind it.

Q & A

Why was brass chosen as the material for the monitor frame?

Brass was chosen because it allows for a slimline construction, adds a smart, elegant look, and provides a robust frame. It's also easier to solder compared to other materials, enabling a thinner, more sophisticated design.

What are some alternative methods for sourcing an LCD panel for this project?

You can source LCD panels from old or dead laptops. To use them with external devices, you'll need to pair them with a control board, which can be found on eBay or AliExpress. Alternatively, new control boards with advanced features such as 4K, touch support, and USB Type-C input are available.

How does the control board contribute to the functionality of the monitor?

The control board is crucial for connecting the LCD panel to external devices. It handles video input via HDMI or USB Type-C and allows features like touch support and high resolution. The control board also enables compatibility with smartphones, laptops, and other devices.

Why is brass considered a better option than MDF for constructing the frame?

Brass is stronger and allows for a much thinner and more elegant construction. It also provides a more attractive finish compared to MDF and is more durable. Additionally, brass can be soldered together, which helps create a compact and robust frame.

What safety precautions are necessary when soldering the brass frame?

When soldering brass, it's important to wear goggles and a breathing mask, work in a well-ventilated area or outdoors, and keep your workpiece securely clamped. Always handle the workpiece carefully after soldering as it can become hot.

How do you achieve a smooth finish on the brass frame?

To achieve a smooth finish, start with 800 grit sandpaper, then progress through 1000, 1500, and 2000 grit. After sanding, use metal polish to achieve a shiny, polished look. Brass is particularly satisfying to polish, as it becomes shiny with minimal effort.

How does the hinge mechanism work for the support legs of the monitor?

The support legs are created using brass U-channel. After cutting and shaping the pieces, a pilot hole is drilled through them, and a screw is used for the hinge action. The legs are designed to support the screen and allow for multiple viewing angles.

What is the purpose of the chamber on the back of the monitor?

The chamber on the back of the monitor houses the control board and battery. It is made using brass U-channel and is carefully cut to accommodate the ports on the control board. The chamber also ensures that the battery and other components are securely mounted.

What kind of battery is used for this monitor, and why?

The battery used is from an old smartphone. It is thin, high-capacity, and fits well in the back chamber. The battery provides enough power to run the screen for about two hours. A protection PCB is also used to prevent overcharging or over-discharging the battery.

How are the speakers integrated into the design of the monitor?

The speakers are small, pre-sealed units with passive radiators for enhanced frequency response. They are covered with brass mesh for protection. The speakers are connected to the control board via pin connectors, allowing them to be easily attached and removed.