Hi,
I have been making lightboxes using led modules and powered by a meanwell 12 or 24v led driver.
I would like to be able to use an arduino to control the dimming and relays to switch the lights on and off.
Looking for solutions on how to power the arduino from the led driver dc output given that it may be in a dimmed state at times. This would enable me to only have one power input into the box.
Any suggestions would be welcome !
At this stage I am looking at using a nano.
Luke
Get a buck converter, 12V to 5V. I use LM2596. from 3.2 - 35V input, 1.25 - 30 output at 3A
12V nano can convert to 5V by itself ( for itself, not for relay), 24V need dedicated step down converter.
of course not dimmed, direct from PSU
Don't do that, it can easily make a crispy critter out of your Arduino. Better to use a regular power supply and a MOSFET on the PWM to control dimming. This would work just fine with a 12 Volt system but if the voltage is higher or many devices on the Arduino you will need a buck converter for the Arduino.
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