FREE ELEKTOR ARTICLE: A 3-DOLLAR TINY WI-FI SWITCH THAT WORKS

Out of curiosity I ordered a tiny ESP8266 relay switch board from aliexpress.com, for next to nothing. Blissfully unaware, then, of the struggle ahead to make the thing work as advertised. I survived and conquered — here’s the story. By Somnath Bera The little gizmo pictured in Figure1 was stated by the vendor(s) to contain an inbuilt …

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