Can you build an automatic light dimmer with Arduino? - Arduino https://forum.etechnophiles.com/arduino/can-you-build-an-automatic-light-dimmer-with-arduino/ Hi, Welcome to the eTechnophiles forum. Got a question like, \'What resistor value to choose for your simple LED project\' OR \'Where is the resistor connected to the inbuilt LED in Arduino UNO\'s schematic\' - All will be answered here. Feel free to check out the topics below. en-US Sun, 12 Apr 2026 18:54:26 +0000 wpForo 60 Can you build an automatic light dimmer with Arduino? https://forum.etechnophiles.com/arduino/can-you-build-an-automatic-light-dimmer-with-arduino/#post-423 Thu, 10 Apr 2025 05:35:50 +0000 Is it possible to build an automatic light dimmer using an Arduino? I'm interested in adjusting the brightness of a light based on ambient light levels using a sensor like an LDR.

What components would be required, and how would the dimming be controlled, especially for an AC light? Are there any safety considerations I should know when dealing with AC dimming?

Any guidance or example circuits would be helpful.

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