I am working on a project that requires multiple different types of servos, stepper motors, and several leds. (This is my first super complicated arduino project, so it's a massive learning experience)
I have all of the programming 99% finished and now I'm trying to power everything, but I think I'm running into problems supplying enough current.
The parts specifically;
An arduino mega
2 tower pro micro servos 5v
2
low profile servos (9.3 kg-cm @6V)
1
larger servo (13kg @ 7.2V)
1
Nema Stepper motor (12V .4A)
controlled by an a4988 stepper motor driver (5V)
a few other boards for audio(5V)
and 32 leds.
My current power setup has the arduino mega supplying power to all of the 5V components with an 18.5 V 3.33A laptop power supply supplying power to the larger components and ideally the arduino mega too.
Everything runs pretty well when I'm powering the arduino mega and from my computer via usb, the 5V components for the 5V pin, and everything from the power supply with voltage regulators that needs more than 5V. Occasionally it does lose power and restarts when I'm really making the servos work, but I assume that's from the usb port not being able to supply enough current.
When I try to power the arduino with 12V from the power supply as well, everything kind of pulses, like it's getting power and then immediately losing power. Same result when using a 12V 10A power supply.
So here's the question part! What would be the best way to wire several components with different voltage requirements from just one power supply?
Would the 12V/10A or the 18.5V/3.33A power supply be more appropriate?
Can anyone suggest specific voltage regulators? (I have regulators for 5V, 6V, 12V, and some lm317 variable regulators. All I think are rated at 1.5A)
If you need any more specific details don't be afraid to ask.
Thanks in advance!