I Need help in another project : i am using LDR and arduino uno and 2 relay module when LDR detects low light it trigger the relay my problem is when slight change in LDR value the relay gets flickering like fast on/ off how to get steady on or steady off ?? the relay module pin is connected to pin …

LDR SENSING RELAY CIRCUIT

Klaus_ww May 17, 2013, 7:31pm 6

Another way without blocking the arduino during delay is to program a hysteresis.

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