DevXDAabout 13 hours ago
ESP32 gadget blocks 537K domains with 50KB RAM
1 min read
Developer ZedAxis built an ESP32-C3-powered gadget that blocks 537,000 ad domains using just 50KB of RAM. The device stores 5-byte domain hashes in flash and performs binary searches to avoid RAM usage. It responds to blocked queries in 10 milliseconds. The open-source project runs on a $5 SuperMini ESP32-C3 microcontroller.
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