Slowly been building the awesome MPCNC, great work Vicious1 !!
Recently have been working on electronics,
I have arduino mega clone with ramps 1.4 , driver a4988 with LCD
With the power supply - 12 volt 6 amps
I seem to be able to successfully uploaded some firmware to board powered by USB,
Issue was when I went to plug in to 240 volt, tripped a fuse
When I tried to power it up I did not have any Stepper drivers connected - Is there any possibility the 6 amps is too much for ramps board without being connected to nema’s ?
Also could I have wired it up to both power inputs at the same time?
You can go many Amps over 5 without a problem, it will only take what it needs UNLESS you have a short.
Disconnect your PSU from the Ramps, does it blow a fuse.
Do you have a volt meter, check output from PSU (not connected to anything)
Remove the drivers.
Connect PSU, if it is OK then –
Plug in one driver at a time (WITH the POWER OFF) and check, .