🛡️ C3 AdBlocker

A network-wide DNS ad-blocker on a $2 ESP32-C3 — 141,000+ domains, no PSRAM. Flash it right here, no toolchain needed.

Plug your ESP32-C3 into this computer, then:

Your browser can't flash — use Chrome or Edge on a desktop. You need to allow the serial port.
Chrome / Edge · desktop ~30 seconds blocklist included
What happens
  1. Click Connect & Install and pick your ESP32-C3's serial port.
  2. It flashes the firmware + a 141k-domain blocklist (~30s).
  3. After it reboots, it makes a WiFi network called C3-AdBlock-XXXX — join it from your phone, pick your WiFi, type the password.
  4. Set it as your router's secondary DNS (or per-device), and ads are blocked network-wide. Dashboard at c3adblock.local.

No WiFi credentials are baked into this build — you set them on-device, privately.

📰 Featured on Tom's Hardware, XDA, and Korben.  ·  Source + docs: GitHub (MIT).