I currently use one Arduino, but my plan is to use multiple Arduinos.
These Arduinos will be relatively close together (within one meter or less), and depending on the configuration I want 2 to 5 Arduinos, all in separate enclosures.
I don't expect a high power consumption from all of them, but I don't want to use batteries. So I would like to use a 9V or 12V adapter with 2A (cannot find higher amperage).
- Can I just split the cable, and add extra plugs for the other Arduinos? (so like a parallel circuit of Arduinos)?
- Is it a problem if I only would connect 1 Arduino? (I don't think so)
- Is there a maximum Amperage I can divide this way? (I mean what if I would find a 5A adapter?)
- I see 9V or 12V adapters ... why would this matter, since the Arduino works on 5V anyway. I don't need to drive external motors, just like 5 small LEDs, some ICs (optocouplers, SRAM) and some basic connectors (like MIDI, later DMX, Audio etc), an RF or ESP01 module.