Meet the M5Stack Cardputer Zero

Meet the M5Stack Cardputer Zero: The Ultimate Pocket Linux Lab for Hackers and Makers

If you’ve ever found yourself wishing you could carry a fully functional Linux terminal in your pocket—complete with physical buttons, hardware expansion, and penetration testing capabilities—M5Stack has answered the call.

M5Stack has just unveiled their latest engineering marvel on Kickstarter: the M5Stack Cardputer Zero. Billed as a "Pocket Raspberry Pi Computer for Hackers," this tiny device is effectively a portable Linux laboratory designed for coding, hardware tinkering, edge AI, and cybersecurity exploration.

Here is a deep dive into what makes the Cardputer Zero an absolute must-have for the maker and hacker communities.

A Full Linux Ecosystem in the Palm of Your Hand

At its core, the Cardputer Zero is built to be a no-compromise command-line interface (CLI) companion. Gone are the days of needing to pull out a bulky laptop to run a quick script or SSH into a server.

The Cardputer Zero gives you a true Linux environment. Whether you need to run Python code, edit configuration files on the fly using Vim, or manage version control with Git, the Cardputer Zero handles it natively. Furthermore, it takes portability to the next level by supporting lightweight Edge AI. With tools like OpenClaw, you can run AI agents directly on the device, ensuring you have smart assistance, automation scripts, and testing tools ready even without an internet connection.

The Ultimate Cybersecurity & Hacking Toolkit

For cybersecurity enthusiasts and pen-testers, the Cardputer Zero is a dream come true. The device isn’t just a computer; it’s a hardware-interfacing multi-tool.

Sniffing and Testing: The device supports essential add-ons like the CC1101 (a sub-1 GHz RF transceiver) and NFC modules, making it an incredibly capable device for RF sniffing, cloning, and security auditing.
Off-Grid Communication: By pairing the Cardputer Zero with LoRa modules and other off-grid communication tools, you can establish independent communication networks beyond the reach of traditional cell towers.

Unmatched Hardware Expansion

M5Stack has built its reputation on modularity, and the Cardputer Zero leans heavily into this ecosystem. It acts as a master controller for almost any DIY build.

The device breaks out SPI, I2C, UART, USB, and GPIO pins, making it a perfect playground for hardware tinkering, prototyping, and debugging. You can seamlessly expand its capabilities using M5Stack’s massive library of Grove connectors and M5Units. Need to add a thermal camera, an environmental sensor, or a motor controller? It’s practically plug-and-play.

Work Hard, Play Hard: A Portable Entertainment Hub

Despite its serious technical chops, the Cardputer Zero knows how to have fun.

Tactile Retro Gaming: It features real, physical buttons that provide a satisfying, authentic feel for retro gaming—vastly superior to touchscreen emulators.
A/V Capabilities: You can connect add-ons like cameras, HDMI outputs, and motion controls for visual experiments.
Media Player: Packed with a built-in speaker and a standard 3.5mm audio jack, it easily doubles as an ultra-compact media player.

Software Freedom

If you don't want to build everything from scratch, M5Stack has integrated a community-driven app store directly onto the device. You can download apps, fetch community-developed firmware, or upload your own projects. The best part? You can switch between these applications instantly, on-device, without needing a PC or a reflashing process.

Pricing and Availability

M5Stack is offering two tiers for this hardware:

CardputerZero Lite: $59 Super Early Bird (MSRP $99)
CardputerZero (Standard): $89 Super Early Bird (MSRP $149)

The project is currently making massive waves on Kickstarter (launching late May, with shipments expected around November). Given the early bird pricing, it's an incredible bargain for a pocket-sized Linux machine with this level of I/O.

Final Thoughts

The M5Stack Cardputer Zero is shaping up to be the Swiss Army knife for the modern hardware hacker. By blending a real Linux environment with RF capabilities, vast GPIO expansion, and a tactile interface, it bridges the gap between software development and hardware hacking in a form factor that fits in your shirt pocket.

If you’re a developer, penetration tester, or just an unapologetic hardware nerd, the Cardputer Zero deserves a spot in your everyday carry. You can check out the campaign and reserve yours over on the M5Stack Store and Kickstarter.

Build Your Own Keystroke Payloads: Inside the New Ducky Script Generator

By CyberRogue | ethical Hackers Den

If you've spent any time messing around with BadUSBs, Digisparks, or even configuring headless setups on a Raspberry Pi Zero 2 W, you know the power of Keystroke Injection. Writing out payloads line-by-line can get tedious, especially when you are trying to perfect the timing of your delays.

To make life a little easier for the community, I've just published a brand new tool right here on the site: The Interactive Ducky Script Generator.

Instead of writing raw text, this tool lets you build your payloads visually. You select your commands, type your strings, and it compiles the raw Ducky Script syntax for you in real-time. Today, I want to pull back the curtain and show you exactly how this tool works under the hood using standard HTML, CSS, and Vanilla JavaScript.

Let's break down the code!

1. The Brains of the Operation: State Management

At its core, the generator doesn't rely on any complex frameworks or external databases. The entire sequence is managed by a single, simple JavaScript array.

// This array acts as the single source of truth for our payload sequence
let duckyScript = [];

2. Capturing the Input

When you select a command like STRING from the dropdown, type "Hello World", and hit Add to Script, we need to grab those values and push them to our array. Here is the exact function handling that logic:

function addDuckyCommand() {
  // Grab the HTML elements
  const cmdSelect = document.getElementById('duckyCommand');
  const valInput = document.getElementById('duckyValue');
  
  // Extract the values
  const cmd = cmdSelect.value;
  const val = valInput.value.trim();

  // If a command exists, push it to our sequence array
  if (cmd) {
    duckyScript.push({ cmd, val });
    
    // Clear the input field for the next command
    valInput.value = ''; 
    
    // Trigger the UI to refresh
    updateDuckyUI();
  }
}

3. Rendering the Raw Output

The magic happens in the updateDuckyUI() function. Every time the array changes (an item is added, deleted, or a template is loaded), this function wipes the slate clean and rebuilds the visual list and the raw text output.

Here is the snippet that actually formats your array into valid Ducky Script syntax:

let rawText = '';

// Loop through our array of commands
duckyScript.forEach((item, index) => {
  // If the command has a value (like STRING hello), print both.
  // If it doesn't (like ENTER), just print the command.
  const line = item.val ? `${item.cmd} ${item.val}` : item.cmd;
  
  // Append it to our raw text string with a line break
  rawText += line + '\n';
});

// Push the compiled text to the read-only textarea
document.getElementById('duckyRawOutput').value = rawText.trim();

4. Built-In Templates for Quick Starts

If you are new to Ducky Script, starting from a blank page can be intimidating. I wanted to include a few classic examples to demonstrate how commands like GUI and DELAY work together.

I set these up as pre-defined arrays. When you click the "Rick Roll" or "Hello World" template buttons, the tool simply deep-copies the template array into our main duckyScript array and refreshes the screen.

const templates = {
  rickroll: [
    { cmd: 'GUI', val: 'r' },
    { cmd: 'DELAY', val: '500' },
    { cmd: 'STRING', val: 'https://www.youtube.com/watch?v=dQw4w9WgXcQ' },
    { cmd: 'ENTER', val: '' }
  ]
};

function loadDuckyTemplate(templateName) {
  if (templates[templateName]) {
    // Deep copy the array so we don't accidentally modify the master template
    duckyScript = JSON.parse(JSON.stringify(templates[templateName]));
    updateDuckyUI();
  }
}

Try It Out!

The beauty of this generator is that it runs entirely on the client side. It’s fast, lightweight, and keeps your payload data entirely in your own browser—nothing is ever sent back to a server.

Head over to the Ducky Script Generator and start building your custom automation tools and test payloads.

Once you build something cool, drop a comment below and let me know what hardware you're deploying it on!

NEON BREACH: JavaScript Game

NEON BREACH: Are You Ready to Infiltrate OmniCorp?

The year is 2088. The world is governed by data, and the data is locked behind the iron-clad firewalls of OmniCorp. You aren't a hero—you're a digital ghost, a solo operator working from a flickering terminal in the darkest corner of the web.

Your objective is simple: Infiltrate, Extract, Upgrade.

I’ve been working on a new project for the Ethical Hackers Den, and it’s finally ready for you to test. Neon Breach is a terminal-based RPG that puts you directly behind the keyboard. You'll need to manage your system health, balance your cache, and fight off aggressive virus payloads in real-time.

How to play

Neon Breach is designed to feel like an authentic hacking experience. You don't need a controller or high-end graphics—you just need a sharp mind and a steady command line.

Scan the Network: Use scan to check your threat levels before jumping in.
The Hack: Use hack to begin your breach. But be warned: the higher your level, the more dangerous the security countermeasures become.
Combat: If an ICE virus triggers, the game switches to combat mode. Use attack to destroy the virus or defend to keep your deck from frying.
Upgrade & Repair: Use your stolen data (Cache) to upgrade your hardware or repair your system when your HP gets too low.

The Code is Yours

I believe in the open-source spirit. If you like the game and want to host a version of it on your own blog or website, just type get_code into the terminal. It will generate the full source code for you to copy, paste, and modify as you please.

Ready to start? The mainframe is waiting.

NEON BREACH: Tactical Hacking

The Mission: The year is 2088. You are a digital ghost navigating the dark web. Infiltrate the OmniCorp mainframe, steal data, and upgrade your gear before their ICE tracks your IP. Reach Level 5 to purge the mainframe.

--- SYSTEM INITIALIZED ---
Welcome, Operator. Use 'help' to see your commands.

Instructions

scan: Analyze the current subnet threat risk and potential cache payouts.
hack: Attempt to breach the system. High risk means high ICE encounter rates.
attack / defend: Combat subroutines used exclusively against active ICE.
shop: Access the Black Market to spend Credits on hardware upgrades.
status: Check your Cyberdeck vitals, software level, and resources.

<!-- Game Title and Description -->

    
    
    <!-- Game Title and Description -->
<div style="max-width: 600px; margin: auto; font-family: sans-serif; color: #333;">
  <h2 style="color: #2c3e50;">NEON BREACH: Tactical Hacking</h2>
  <p><strong>The Mission:</strong> The year is 2088. You are a digital ghost navigating the dark web. Infiltrate the OmniCorp mainframe, steal data, and upgrade your gear before their ICE tracks your IP. Reach Level 5 to purge the mainframe.</p>
  
  <div style="background: #1a1a1a; padding: 20px; border-radius: 8px; color: #ddd; transition: background 0.3s;" id="terminal-container">
    <!-- Terminal Output -->
    <div style="background: #000; color: #33ff33; padding: 15px; font-family: 'Courier New', monospace; border: 1px solid #33ff33; height: 300px; overflow-y: auto; margin-bottom: 10px;" id="output">
      <div>--- SYSTEM INITIALIZED ---</div>
      <div>Welcome, Operator. Use 'help' to see your commands.</div>
    </div>
    <!-- Input Field -->
    <div style="display: flex; background: #333; padding: 5px; border-radius: 4px;">
      <span style="color: #33ff33; margin-right: 10px;">></span>
      <input type="text" id="command-input" style="background: transparent; border: none; color: #fff; width: 100%; font-family: 'Courier New', monospace; outline: none;" placeholder="Enter command..." autofocus>
    </div>
  </div>

  <!-- Instructions -->
  <h3 style="color: #2c3e50; margin-top: 20px;">Instructions</h3>
  <ul style="font-size: 0.9em; line-height: 1.6;">
    <li><strong>scan</strong>: Analyze the current subnet threat risk and potential cache payouts.</li>
    <li><strong>hack</strong>: Attempt to breach the system. High risk means high ICE encounter rates.</li>
    <li><strong>attack / defend</strong>: Combat subroutines used exclusively against active ICE.</li>
    <li><strong>shop</strong>: Access the Black Market to spend Credits on hardware upgrades.</li>
    <li><strong>status</strong>: Check your Cyberdeck vitals, software level, and resources.</li>
  </ul>
</div>

<script>
  const output = document.getElementById('output');
  const input = document.getElementById('command-input');
  const container = document.getElementById('terminal-container');
  
  // Game state expansion
  let state = { 
    hp: 100, 
    maxHp: 100,
    level: 1, 
    cache: 0, 
    credits: 50,
    isFighting: false, 
    virusHp: 0,
    scanRisk: null,
    scanPayout: null
  };

  input.addEventListener('keydown', (e) => {
    if (e.key === 'Enter') {
      const cmd = input.value.toLowerCase().trim();
      printOutput("> " + cmd);
      if (state.isFighting) { processCombat(cmd); } 
      else { processCommand(cmd); }
      input.value = '';
    }
  });

  function printOutput(text) {
    const div = document.createElement('div');
    div.innerText = text;
    output.appendChild(div);
    output.scrollTop = output.scrollHeight;
  }

  function flashScreen(color) {
    const originalBg = container.style.background;
    container.style.background = color;
    setTimeout(() => { container.style.background = "#1a1a1a"; }, 150);
  }

  function generateNewNode() {
    state.scanRisk = Math.floor(Math.random() * 60) + 20; // 20% to 80%
    state.scanPayout = Math.floor(Math.random() * 25) + (state.level * 10);
  }

  // Initialize first node stats hiddenly
  generateNewNode();

  function processCommand(cmd) {
    if (cmd === 'run_debug_mode') { 
      state.credits += 500; 
      printOutput("[DEBUG] +500 Credits injected."); 
      return; 
    }

    switch(cmd) {
      case 'help': 
        printOutput("Commands: scan, hack, status, shop, buy [item], clear"); 
        break;
      
      case 'scan': 
        printOutput(`[SCANNER] Subnet Analysed:\n -> Threat Level: ${state.scanRisk}%\n -> Estimated Data Payout: ${state.scanPayout}GB`); 
        break;
      
      case 'status': 
        printOutput(`DECK STATUS:\n HP: ${state.hp}/${state.maxHp} | Level: ${state.level}/5 | Cache: ${state.cache}GB | Credits: CR ${state.credits}`); 
        break;
      
      case 'hack':
        const triggerIce = (Math.random() * 100) < state.scanRisk;
        if (triggerIce) {
          state.isFighting = true;
          state.virusHp = 40 + (state.level * 20);
          flashScreen("#5c1d1d");
          printOutput(`[!!!] COUNTER-ICE TRIGGERED! Security Payload HP: ${state.virusHp}. Input 'attack' or 'defend'!`);
        } else {
          state.cache += state.scanPayout;
          const credReward = Math.floor(state.scanPayout * 0.5);
          state.credits += credReward;
          flashScreen("#1d5c2b");
          printOutput(`[SUCCESS] Encryption cracked! +${state.scanPayout}GB data captured. Sold excess bandwidth for CR ${credReward}.`);
          generateNewNode(); // Roll fresh parameters for the next hack
          printOutput("[SYSTEM] Redirecting to new subnet. Type 'scan' to scope it out.");
        }
        break;

      case 'shop':
        printOutput("=== BLACK MARKET SHOP ===");
        printOutput(`Your Balance: CR ${state.credits}`);
        printOutput("1. buy cpu   (CR 40)  -> Level up deck. Increases hack strength.");
        printOutput("2. buy ram   (CR 30)  -> Increases Max HP by +25.");
        printOutput("3. buy patch (CR 15)  -> Restores 40 HP.");
        break;

      case 'buy cpu':
        if (state.credits >= 40) {
          state.credits -= 40;
          state.level++;
          printOutput(`[UPGRADE] CPU core optimized. Cyberdeck level is now ${state.level}.`);
          checkWinCondition();
        } else { printOutput("[ERROR] Insufficient Credits."); }
        break;

      case 'buy ram':
        if (state.credits >= 30) {
          state.credits -= 30;
          state.maxHp += 25;
          state.hp += 25;
          printOutput(`[UPGRADE] Expanded memory allocation. Max HP is now ${state.maxHp}.`);
        } else { printOutput("[ERROR] Insufficient Credits."); }
        break;

      case 'buy patch':
        if (state.credits >= 15) {
          state.credits -= 15;
          state.hp = Math.min(state.maxHp, state.hp + 40);
          printOutput(`[REPAIR] Running patch.exe. HP recovered to ${state.hp}.`);
        } else { printOutput("[ERROR] Insufficient Credits."); }
        break;

      case 'clear': 
        output.innerHTML = ""; 
        break;
        
      default: 
        printOutput("Unknown command. Type 'help'.");
    }
  }

  function processCombat(cmd) {
    if (cmd === 'attack') {
      let dmg = 15 + (state.level * 8);
      state.virusHp -= dmg;
      printOutput(`[>] Dispatched brute-force pack. ICE took ${dmg} damage.`);
      
      if (state.virusHp <= 0) {
        let bounty = 30 + (state.level * 10);
        state.credits += bounty;
        printOutput(`[!] ICE CRASHED. Countermeasure bypassed! Bounty claimed: CR ${bounty}.`);
        state.isFighting = false;
        generateNewNode();
      } else { 
        virusTurn(); 
      }
    } else if (cmd === 'defend') { 
      printOutput("[>] Erecting digital firewall..."); 
      virusTurn(true); 
    } else { 
      printOutput("Combat Protocol Active: Use 'attack' or 'defend'!"); 
    }
  }

  function virusTurn(isDefending = false) {
    let baseDmg = 10 + (state.level * 5);
    let dmg = isDefending ? Math.floor(baseDmg * 0.3) : baseDmg;
    state.hp -= dmg;
    flashScreen("#5c1d1d");
    printOutput(`[!] ICE spikes your deck! You suffer -${dmg} system damage.`);
    
    if (state.hp <= 0) { 
      printOutput("!!! FATAL EXCEPTION: DECK OVERHEATED. FIRMWARE FRIED. REBOOTING..."); 
      resetGame();
    } else { 
      printOutput(`[COMBAT] ICE Status: ${state.virusHp} HP | Your System: ${state.hp}/${state.maxHp} HP`); 
    }
  }

  function checkWinCondition() {
    if (state.level >= 5) {
      printOutput("=================================================");
      printOutput("SUCCESS!!! OMNICORP MAINFRAME PURGED.");
      printOutput("You've secured the legendary data archives.");
      printOutput("You are officially a digital ghost legend.");
      printOutput("=================================================");
      resetGame();
    }
  }

  function resetGame() {
    state = { hp: 100, maxHp: 100, level: 1, cache: 0, credits: 50, isFighting: false, virusHp: 0 };
    generateNewNode();
    printOutput("--- NEW SESSION INITIALIZED ---");
  }
</script>
    
    Credit: <a href="https://www.ethicalhackersden.org/p/gotw.html">Game By Ethical Hackers Den</a>

About the Developer

NEON BREACH was developed by M5RogueOps, the lead operator at the Ethical Hackers Den. This project was built to bring the gritty, high-stakes feel of 2088-era terminal hacking to the browser, focusing on resource management and tactical decision-making.

Our mission is to explore the intersection of DIY hardware, offensive security, and creative coding. If you enjoyed this project, be sure to check out the rest of the Den for more guides on ESP32 exploits, portable pentesting, and open-source tactical tools.

Stay connected: Join the Discord
Contribute: Follow on GitHub
Explore the archives: Main Blog Page

Found a bug? Have an idea for a new command? Let us know in the comments or join us on Discord to discuss potential upgrades for the terminal!

Periscope-OS: Silent Wireless Reconnaissance

"Turning the airwaves into a digital ocean."

I am proud to unveil Periscope-OS, a tactical, passive signals intelligence (SIGINT) suite built for the M5Stack M5StickS3. This project transforms a pocket-sized micro-controller into a silent hunter, mapping the 2.4 GHz spectrum without ever transmitting a single frame.

Key Tactical Capabilities

Passive RF Visualizer: Live, volumetric spectrum analysis across channels 1–11 with real-time decay physics.
DPI Sniffer Engine: Automatically detects and dissects malicious 802.11 management frames (Deauth/Disassociation).
Hardware Fingerprinting: OUI-based lookup to identify adversarial equipment (Flipper Zero, Raspberry Pi nodes, Alfa cards, etc.).
Spatial Sonar Radar: 360-degree direction-finding using IMU-based body-shielding calculus.
Tactical Logbook: An integrated, scrollable database to store threat dossiers on internal flash memory.

                                   |
                               _  _|_  _
                              [_ _ _ _ _]
                                \_____/
                                   |
                 __________________|__________________
                /  _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  \
               /  /                                 \  \
 _____________/  /      [ SILENT RUNNING MODE ]      \  \_____________
|               /                                     \               |
|==============|==============[ ELINT ]================|==============|

Why "Periscope-OS"?

Modern wireless attacks are often invisible to the naked eye. Periscope-OS gives you the ability to observe the digital battlefield while remaining completely undetected. Using the M5StickS3’s onboard IMU and radio hardware, it acts as a digital periscope, breaking the surface of the wireless spectrum to identify threats before they hit your network.

Operational Manual

Whether you are performing a security audit, validating network integrity, or conducting a wireless fox-hunt, the interface is designed for rapid engagement:

Radar View: Track blips, lock onto attacker MACs, and use the haptic motor to track threats while in stealth mode.
Visualizer: Use the live spectrum bars to detect active transmission hotspots.
Logbook: Hold Button B to review captured threat manifests.

Join the Project

Periscope-OS is open-source and released under the MIT License. I invite the community to audit the code, contribute to the OUI database, and deploy it for educational security research.

Resources:
View Repository on GitHub
Join The Discord

Humanity’s Last Hope: Coding "The Silence Protocol"

If you’ve been following the Ethical Hackers Den, you know we don't just talk about hardware—we push it to the brink of what it was designed to do.

For the last few weeks, I’ve been deep in the trenches of a new project. I wanted to see if I could transform the M5Stack StickS3—a tiny, credit-card-sized microcontroller—into a fully immersive, hardware-integrated cyberdeck.

The result is The Silence Protocol.

What is The Silence Protocol?

It’s a text adventure game, but not in the way you remember from the 80s. I wanted to move away from pure screen-tapping and force the player to actually use the sensors packed into their hardware.

In The Silence Protocol, you aren't just reading text on a screen. You are:

Shaking the device to charge an EMP.
Keeping the device perfectly flat to balance across live-wire bridges.
Remaining physically silent in your real-world room, using the onboard microphone to bypass enemy drone scanners.
Scanning your real-world WiFi environment to inject payloads into the game’s virtual core.

Why the M5Stack?

We talk a lot about "Ethical Hacking" and "Embedded Security" here at the Den. The StickS3 is the perfect platform for this because it’s portable, it has an IMU, a microphone, and built-in WiFi. It’s not just a toy; it’s a tool. By building a game that uses these sensors, I wanted to show you all that the barrier between "coding a game" and "hacking a system" is much thinner than people think.

Dialing in the CRT Aesthetic

I wanted the game to look like it was pulled off a terminal from 1985, but running on a high-res TFT. We’ve implemented a custom rendering engine that features:

Scanlines: To give it that fuzzy, tube-TV texture.
Phosphor Colors: Soft amber and hazy green palettes that won’t burn your retinas during a long hack.
VHS Glitches: Real-time static and tearing effects when you get too close to a security system.

Play it Yourself (For Free)

This project is open-source. I’ve uploaded the full campaign, the minigames, and the rendering engine to GitHub. Whether you want to play through the full gauntlet, or you just want to dig through the code to see how we handled the WiFi scanner or the IMU-based minigames, it’s all there for you.

Get the Code on GitHub

The network is down. The Silence is spreading. Get your M5Stack ready, flash the firmware, and let’s reboot the grid.

Stay curious, stay ethical.

— M5RogueOps

Join the community at: ethicalhackersden.org