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A1000 and 2/2.2V on the board
Posted: Fri Nov 06, 2020 9:19 pm
by JackTheKnife
Is there any way to grab 2V or 2.2V from the A1000 board? I'm trying to add CF card usage indicator by connecting LED which those I have are 2V or 2.2V
Re: A1000 and 2/2.2V on the board
Posted: Sat Nov 07, 2020 8:06 am
by BloodyCactus
that sounds like forward voltage than the led's actual voltage. most common led have a fV of 2.0/2.2.
for a 2.2v forward voltage at 20ma, you can use a 150ohm 1/8w resistor.
Re: A1000 and 2/2.2V on the board
Posted: Wed Nov 11, 2020 5:52 pm
by JackTheKnife
Any particular place on the mobo to get +5V or just directly from the floppy power cable?
Re: A1000 and 2/2.2V on the board
Posted: Thu Nov 12, 2020 6:50 pm
by kneehighspy
JackTheKnife wrote: ↑Wed Nov 11, 2020 5:52 pm
Any particular place on the mobo to get +5V or just directly from the floppy power cable?
you should be able to grab +5v off most of the ic’s on the motherboard.
but i would just pull it from the floppy power connector.
Re: A1000 and 2/2.2V on the board
Posted: Sat Dec 11, 2021 3:35 pm
by JackTheKnife
kneehighspy wrote: ↑Thu Nov 12, 2020 6:50 pm
JackTheKnife wrote: ↑Wed Nov 11, 2020 5:52 pm
Any particular place on the mobo to get +5V or just directly from the floppy power cable?
you should be able to grab +5v off most of the ic’s on the motherboard.
but i would just pull it from the floppy power connector.
Yeah - pulled from the floppy power. Works like a charm.