Hardware

LilyGO T-Embed CC1101 Plus surrounded by remotes, access cards and RFID tags

One Gadget, Three Radios: First Tests With the T-Embed CC1101 Plus

I bought a new toy: a LilyGO T-Embed CC1101 Plus. It’s a pocket-sized, battery-powered multi-radio tool in a clear case, with a little scroll wheel and three antennas. Think of it as a Swiss Army knife for the airwaves: sub-GHz radio, Wi-Fi, Bluetooth and NFC/RFID in one device you can drive with your thumb. I didn’t buy it just to collect gadgets. Three capabilities sold me on it: ...

ESP8266 wardriver on a breadboard with the OLED showing GPS, Wi-Fi and SD icons

Finishing What I Started: Building an ESP8266 Wardriver a Year After PWNED 0x08

Last year I attended PWNED 0x08, a cybersecurity conference here in Costa Rica, and signed up for the workshop “RF Exploration: Introduction to Sniffing with ESP32/ESP8266.” The goal was simple and very fun: build a pocket-sized wardriver, a device that listens for Wi-Fi networks around you, tags each one with a GPS position, logs everything to an SD card and shows its status on a small screen. I walked out of that workshop with a bag of parts and a project I hadn’t finished. ...