Hi,
I am looking to power an Arduino UNO and a BED (Big Easy Driver) running a ROB-13656 Stepper with the same power supply. So far, what I have learned from other threads is that it is not a good idea to hook up the Arduino to the VCC out of the BED. I wonder if it is a good idea to hook both units up in parallel to the same battery. I have been looking through the forum to see if someone has tried/asked something similar but haven’t found anything.
My power source is a 12V (TalentCell) Lithium ion battery pack with 3A max discharge. Both the BED and the UNO handle 12V with ease and I know the motor will draw 2A if it gets stuck or something which is unlikely , so that will leave a full Amp for the UNO to use at its leisure. I have a very basic background on electronics… on my head this sounds like a solid plan, but I fear that I am missing something, has anybody tried to do something similar to this?
A bit of background: My project will have both the UNO and BED in deep sleeping & sleeping (respectively) until movement is detected from a PIR (Passive Infra-Red) Sensor hooked up to the UNO. At this point, the stepper will rotate a platform to a desired orientation, do a thing, then return to the resting orientation. When all is done, both components will go to sleep again. I have a Servo that will essentially lock the platform in place so that the stepper does not move while its asleep. The idea is to use as little power as possible while in idle mode.
Any help will be much appreciated, thanks!
v/r
Tetra