I am using a relay to activate a load and it is connected to arduino. The leds are on in the relay but the load is not turning on. I already separated the source for the lcd, but the lcd is also printing something unreadable.
Why did you start a topic in the Uncategorised category of the forum when its description is
DO NOT CREATE TOPICS IN THIS CATEGORY
It has been moved to the Project Guidance category
what is the load? remember typical Arduino relayss are rated at 250V 10amps AC resistive load
if you are switching an inductive load, e.g. squirrel cage motor , reduce the rating to 3 or 4 amps
see What do the terms AC1 and AC3 mean
what Arduino are you using?
the load is water pump
any idea of the pump power rating, e.g. recently I was switching a jabsco 28520 pump
the arduino relay was operating a 20amp contactor
that 12W pump should be OK with an Arduino relay
how do you power the relay and LCD?
it could be the arduino you are using does not have sufficient current output to drive the device - the fact that the LCD prints rubbish may indicate this
have you removed the pump and put a multimeter across the relay output to check the relay is closing
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It was working well. I don't know why it suddenly stopped working. The relay is connected to a 5V adapter and the arduino is connected to 9V adapter.
I use a phone charger to power the lcd.
Check the pump, maybe it is just blocked or clogged.
Or not filled...
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Can you share a schematic of your setup? And the code?
And a link to the data sheet of your relay module?
Are you in an industrial environment (with big motors or welding equipment...)?
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