Clever hacker fits 537,000 domains in a $5 ESP32 ad-blocking dongle
ESP32ad-blockingDNS filterDIY projectmicrocontrollerIoT
Author: sbulaev
Date: 7/19/2026
Article Summary:
A $5 ESP32 microcontroller is used to build a fully functional ad-blocking filter with over 500,000 domains blocked and around 10ms latency.