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Showing posts with the label WiFi Security

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Running four AI models fully offline on a Nextion ONX3248G035

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A while back I unboxed a Nextion touchscreen dev board and vibe-coded a WiFi auditor onto it . That board has been sitting on my desk ever since, and one question kept nagging: this thing has 8 MB of PSRAM and a dual-core ESP32-S3. Could it run an actual language model? Not talk to one over WiFi — run one. Turns out: yes. Four of them, in fact. No internet, no server, no phone, no PC. Everything in this video is generated by the chip on the board. All four models, on the board, offline. Loading a model from the SD card, then generating. What is actually running The board boots into a menu. Tap a model, it loads and starts generating. All of these were trained from scratch on an M2 Max in well under an hour. Malayalam English Arithmetic Icons Parameters 7.6M 7.6M 1.0M 577K Flash 3.95 MB 3.95 MB 0.41 MB 0.58 MB Speed 13.0 tok/s 14.9 tok/s 20.7 tok/s 3.4 s/image First things first: this is not a Nextion HMI The ONX3248G035 is sold under Nextion branding, and the name is...
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Cloning a CAME parking-gate remote with a Flipper Zero — why static Princeton codes are a security own-goal

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Cloning a CAME parking-gate remote with a Flipper Zero — why static Princeton codes are a security own-goal A surprising number of buildings hand each tenant a little plastic fob to open the parking barrier — and a surprising number of those fobs are not what you'd call secure. If the building installer cheaped out (or just picked the default jumper settings), the remote sends a fixed sub-GHz signal every single time. No rolling code, no challenge, no cryptography. Just the same packet, on the same frequency, every press. Which means anyone with a Flipper Zero and a few minutes can clone it. Here's a 90-second demo of doing exactly that on a CAME barrier — and the technical context for why it works. The setup The gate is a CAME -branded barrier, the kind you see at almost every apartment compound parking entrance. Every tenant is given a static remote — not rolling code. Why? Cheaper. Static encoders like Princeton's PT2262 (and the dozens of clones ...
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From unboxing a touchscreen dev board to vibe-coding a full WiFi auditor

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From unboxing a touchscreen dev board to vibe-coding a full WiFi auditor A parcel landed at my door from Nextion Systems : the new Open Nextion — an ESP32-based board with a built-in capacitive touch display. Came in two flavors (3.5" and 2.8"), plus a speaker, a dual-microphone board, and an IO adapter. The kind of package that's begging to be turned into something it was never meant to do. So, naturally, I did exactly that. What's actually in the box Before any of the fun started, here's what the Open Nextion package shipped with: Two Open Nextion boards — 3.5" and 2.8" variants Onboard speaker Dual-microphone board (for stereo capture / wake-word work) IO adapter for breaking out the rest of the GPIO The board itself is generous on connectivity: USB-C , a battery connector with a real RTC , I2C, UART , a camera interface, SD card , plus mic and speaker pins. It's basically a tiny computer with a touchscreen bol...
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