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M-Abozaid/esp32-c3-adblock — Pi-hole-class DNS ad-blocker on a $2 ESP32-C3 (no PSRAM): 537k domains as 40-bit

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1,293 stars | 119 forks | C++

Pi-hole-class DNS ad-blocker on a $2 ESP32-C3 (no PSRAM): 537k domains as 40-bit FNV-1a hashes in flash, binary-searched. UDP DNS sinkhole + web dashboard. https://youtube.com/shorts/RaxszOUMi8E?feature=share

What it does

This repository provides a Pi-hole-like DNS ad-blocker specifically designed for the ESP32-C3 microcontroller, eliminating the need for expensive PSRAM. It achieves this by storing domain hashes directly in flash memory and using binary search, enabling a significant reduction in RAM usage and cost while maintaining performance.

Why it matters: Block ads on your network for just $2! 🤯 This ESP32-C3 ad blocker fits 537k domains in flash – no PSRAM needed! #ESP32 #adblock

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