Arduino nano voltage regulator

Other Hardware General Electronics
1

hi,
i have a project that uses arduino nano and and an electromagnet. for this purpose i only had 12v 2a adepter. this is my input. in first prototype i used l298d board which has 5v regulator and there was no problem. now i m designing a pcb card and i cannot use this board because it is not suitable for pcb(if there is a pcb version please tell me) . therefore i dont have any regulator in my design. as a result i need to convert this 12v input to 5v.

i found in arduino nano datasheet :
"The second voltage regulator, the LM1117 supports input voltages between 7V and 12V with a maximum current of 900mA"

my adepter is 12V 2A so is it will be problem for long term in heat ?

if yes, what is your recommendation for my pcb design ? which component should i use?

i am zero experience in this area so i just think that use some regulator + l293d as a motor driver. i m fully open ur recommendations thank you.

thank you

2

Your question is ambiguous.

Is the regulator the one of the regulators on the Nano or an external regulator?
What is the output voltage of the regulator?
To what is the regulator supplying current?
How much current do you expect the regulator to supply?

The regulator may be capable of 900mA, but that is with an ideal heat sink. Such a heat sink is not present on the Nano board so the actual current available is much much less.

Post a schematic of the project. Show all components, their values and/or part numbers and all power supplies.

3

Using the voltage regulator on a Nano via "Vin" is a Really Bad Idea. the Nano should be powered with (regulated) 5 V to the "5V" or "Vcc" pin.

To start with, what voltage does the motor require?

What other components are involved?

4

thank you. i edited post

5

i edited post thank you