🔧 Introducing CyberT. Beta – A Custom Cyber Terminal Powered by Raspberry Pi CM4

We’re excited to unveil CyberT. Beta – our most ambitious build yet, a custom-built cyber terminal designed entirely in-house. Born from our passion for compact Linux systems and mobile cybersecurity tools, CyberT. It is a powerful, modular device built around the Raspberry Pi Compute Module 4 (CM4).

While still in beta, CyberT. already offers a solid foundation for makers, pentesters, and Linux lovers who want a rugged, versatile, and portable terminal experience.

The design is based on a concept made by Punkt. called MC01

⚙️ Under the Hood – CyberT. Beta Specs

At the heart of the CyberT. is a custom-designed PCB, engineered from scratch with the following key features:

🧠 Raspberry Pi Compute Module 4 (CM4)

🎧 Built-in Audio – Integrated stereo speakers and 3.5mm headphone jack

🔋 Onboard BMS (Battery Management System) – Safe charging & power management

⌨️ Backlit QWERTY Keyboard (QMK-compatible) – Fully programmable, designed for compact use

🖱️ BlackBerry Touch Sensor – Acts as a cursor/touchpad, no external mouse needed

🖼️ HDMI Output – Seamless connection to external displays

🔌 Micro SD Card Slot – For OS storage or quick swaps

🎥 Raspberry Pi Camera Support – Compatible with standard Pi camera modules

🎙️ Built-in Microphone – For audio capture, voice commands, or lightweight recording

💡 Status LEDs – System status and battery indicators for quick diagnostics

🔘 Physical Buttons – Power, Volume, and Reset buttons for full control

📏 Handheld Form Factor – Rugged yet slim design, optimized for mobility

🖥️ Display Woes – What Happened?

The original design was created to support a slim, integrated RGB display, but here's the honest truth: our small team ran into limitations building a custom RGB driver compatible with the Pi CM4. Despite extensive prototyping, documentation dives, and testing, we haven't yet achieved stable functionality with the RGB panel. If you have experience writing customr display drivers please contact us!

This is the display it was meant to use, and it was wired like a DPI display. Adafruit LINK - Square RGB TTL TFT Display - 4" 720x720 - with Capacitive Touch - TL040HDS20CT-B1502A - Find more info at Adafruit

Summary - The TFT driver is ST7701S and uses both TTL RGB 'dot clock' data. Note that, unlike the other funky-shaped displays, this particular model does not require SPI pre-configuration. It pops up immediately into 'RGB' mode. To make stuff light up you'll need a chip that can perform TTL RGB TFT driving, which means a powerful microcontroller such as the ESP32-S3 with octal PSRAM or a computer like a Raspberry Pi.

So for now… we’re pivoting.

🛠️ Display Option B: HDMI Display

To keep things moving (and usable), we’re switching to standard HDMI-compatible displays. These “driverless” options are plug-and-play, meaning:

• ✅ No custom driver installation

• ✅ Works out of the box with Raspberry Pi OS, Kali, and others

• ✅ Tested and confirmed functional with CM4’s onboard HDMI

We’ve tested a few low-profile HDMI displays that pair well with CyberT. and still preserve its sleek, minimal form factor. A future revision may reintroduce the integrated display once we master the RGB driver side. The model tested is the Waveshare LINK - 4Inch HDMI Display. The case has been updated to adjust to the larger screen.

🔋 Power & Portability

CyberT. was built to be self-powered, using a safe and reliable LiPo battery setup with onboard BMS. This means you can operate completely off-grid for hours while performing real-world audits, writing code, or documenting engagements.

Combine that with its compact design and USB-C charging, and CyberT. becomes the ideal everyday carry for mobile hacking or remote sysadmin tasks.

🚧 Beta Status – What’s Next?

CyberT. Beta is our first public hardware prototype, and as with any early-stage project, we welcome feedback and contributors.

Here's what's coming soon:

• 2nd Beta

• 📚 Full build docs and display wiring

• DIY Kits on our site, for now, you can support and order on Tindie LINK
  Gallery

💬 Join the Community

Have ideas for improving CyberT.? Want to help us build that elusive RGB driver? Or just curious about what’s next?

Join us on Discord: CyberArch Community
Email: support@carboncomputers.us

CyberT. Beta is our love letter to open hardware, portable Linux, and the DIY hacker ethos. It’s not perfect yet—but it’s real, functional, and getting better with every iteration.

Stay tuned. 🔧👾

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