M5Stack Cardputer Advanced: The Ultimate Pocket Tool for Geeks and Sysadmins

Good morning everyone! I'm Dimitri Bellini, and welcome back to Quadrata, my channel dedicated to the open-source world and IT solutions that I love—and that I know you will love too.

Usually, we talk about enterprise software or complex solutions, but this week I want to present something different. It is a truly stunning object, not dedicated to the enterprise world, but to all of you who love making objects, building embedded systems, playing with sensors, and trying alternative solutions. Today, we are diving into the M5Stack Cardputer Advanced.

What is the Cardputer Advanced?

The Cardputer ADV is the second iteration of a product that has gone big. It is part of the M5Stack family, and essentially, we are talking about a very compact solution based on the ESP32-S3 microcontroller. If you aren't familiar with the ESP32, it is a powerful chip that includes a microprocessor and a whole set of features needed to manage complex projects.

Why is this device so special? Because inside something that fits in the palm of your hand, you get a complete standalone workstation. Here is what is packed inside:



It even has magnets on the back so you can stick it to your refrigerator or server rack, and holes compatible with Lego bricks if you want to build a robot or integrate it into a creative structure.

Why Should You Use It?

Basically, for fun and to learn. It is not a substitute for your smartphone—the power is completely different—but it opens up a world of opportunities. You can test sensors for your server farm, learn how to program an ESP32 if you never have before, or simply play around with hardware without needing a soldering iron.

The Ecosystem: M5Launcher and UiFlow

One of the best things about the M5Stack community is the software ecosystem. There is a fantastic project called M5Launcher (by bmorcelli) that acts as a bootloader. It allows you to install applications directly via Wi-Fi (OTA) or load firmware binaries from the SD card.

This means you can switch from a Wi-Fi scanner to a retro gaming emulator in seconds. For education, there is UiFlow 2.0, a block-based programming interface (Blockly) that lets you or your children create programs by dragging and dropping bricks. It is an incredibly simple way to learn logic and hardware interaction.

The Meshtastic Project: Off-Grid Communication

One of the most popular uses for this device right now involves Meshtastic. This is a project that uses LoRa (Long Range) technology to create a resilient, off-grid mesh messaging network.

M5Stack released a "LoRa Hat" that stacks onto the Cardputer, adding GPS and the transmission antenna. This transforms the device into a fully functional Meshtastic node. The killer feature here is the keyboard.

In many Meshtastic setups, you need to connect via Bluetooth to your phone to type messages. With the Cardputer, you are fully standalone. You can receive and send messages freely without any other device, all for a setup cost of around 40 Euros. It is affordable, secure, and incredibly fun.

My Personal Project: Zabbix Sentinel

I couldn't resist developing something of my own for this device. I created a firmware called Zabbix Sentinel.

This application allows you to monitor your Zabbix infrastructure directly from the Cardputer. It connects to the Zabbix API and provides a real-time dashboard showing:



I designed the interface with a bit of an 80s pixel-art, CRT monitor vibe to make it look cool. You can even acknowledge problems directly from the keyboard. Thanks to the magnets on the back, I can leave it on the fridge or a metal cabinet as a dedicated, always-on infrastructure pager. It was a great way for me to test the HTTP capabilities, display management, and LED controls of the ESP32.

Final Thoughts

The Cardputer Advanced is a robust development environment for a fraction of the cost of a Raspberry Pi. Whether you want to scan networks, build a robot with Lego, chat off-grid with Meshtastic, or monitor your servers with Zabbix Sentinel, this device is a playground for technology lovers.

I bought this with my own money because I love playing with tech, and I genuinely recommend it if you want to spark your curiosity or teach your kids about electronics.

Let me know in the comments what you think of the Cardputer. Have you used ESP32 devices before? Maybe for Home Assistant? Tell me your experiences!

See you next week!



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