3 Replies Latest reply on Apr 3, 2016 1:18 PM by user_78878863

    5v relay module advice

    cathal.ferrydl_1479341
              Hi, I've got a 5v microcontroller relay module, im using an external 5v supply for the transistor circuit of the relay. I also have an lm35 temperature sensor reading the temperature in the same project. The relay input seems to be active low as it seems that writing a 0 to the control pin of the relay will activate it. The problem is that when i activate the relay the temperature reading changes by a few degree. I see that the voltage supply to the temperature sensor drops slightly when activating the really changing the output temperature. Any advice on how to remedy this? Thanks Guys