Hi
I am doing arduino project with 12v stepper motors and I have 12V 30A 350W power supply.
I want to deliver 5v power to the arduino and drivers from the same power supply.
Any suggestions for voltage regulators with screw terminals ?
Thank you.
I would connect wires o the power supply and then send those wires to a power distribution board where the regulators would be soldered.
With no information about the actual 5V current requirements(schematic, data sheets for all devices would be required), all advice would necessarily be pretty generic. For example, use a
"buck converter" to down-regulate your 12V to 5V".
Good luck.
Arduino should be able to take 12V on its VIN pin. How much current in total do your drivers need?
Check out Digikey...
I've found 12v can make some boards a little toasty. That is sometimes the upper limits on certain boards and best not to ride it at the maximum if possible.
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My usual thought is if less than 1A use a 3 terminal regulator with a heat sink, above that use a buck converter.
If you only need the 5V to run the Arduino, then you can simply feed 12V from the power supply to the Vin terminal on the Arduino. There is a voltage regulator on the Arduino that will reduce the 12V to 5V.
The thing you have to watch is that it is a linear regulator. The amount of heat it produces is a function of the product of input voltage and load current. With a lower voltage, the regulator can supply more current and still stay within its temperature limit. At 12V, the regulator can just supply enough current to run the Arduino itself. You won't be able to connect very much, if anything, to the 5V pin on the Arduino without overheating that regulator.
If you have other items that need 5V, I would get a 5V regulator module and use that to produce the extra 5V current. I don't think you're going to find any with screw terminals though.
See #5. They exist, but aren't cheap:
Search amazon for buck converter 12v to 5v. I found one that i have used in the past. $16US for
5 of them.
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