I'll try turning them on one by one to see if that fixes anything.
The 24v to 12v dc converter is rated for 5A/60W.
Its sole purpose is to power the arduino mega2560
The 24v to 5v dc converter is rated for 5A/25W.
It's powering the D1 robot lcd shield.
Also it powers the 8 relay module.
(I read somewhere on the forum that this model of songle relays consume 72 mA each, so that's near ~576mA total)
Not sure how true the 72mA draw is.
I see what you mean makes total sense.
I'll put one together.