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Hey All,
I wanted to power my Chinese BOB with a power adapter instead of the USB port.
I have 2 adapters to chose from, 5.3v 500mA or 5v 2.5A.
Which is better to use to power my chinese CNC BOB.
Here is an image of the board, for clarification.
https://www.cnczone.com/forums/attac...d=406136&stc=1
Thanks
Linrox
I'd go with the 5 volt one myself. I don't think the 2.5 amps will worry you at all.
I agree it's better to use a separate psu. Like Rod said the 5V is fine
are both power supplies regulated ??
if both supplies are regulated
the 5.3V supply can be use as its within the 5V plus or minus 10% limit for TTL logic IC's
if the 5.3V supply is a phone charger - don't use it , they are not normally regulated
John
PS
the breakout board circuit
Attachment 406162
link to the data sheet for the 74hc14 IC used on the breakout board
https://assets.nexperia.com/document...74HC_HCT14.pdf
from page 4
the supply voltage
Attachment 406168
The 5.3V was from a old mobile charger. I thought the current might be a bit low, at 500mA.
The 5V2.5A was from a external usb hub.
Thanks All for your replies.
I have one of these the best option I believe .
https://www.cnczone.com/forums/attac...d=406192&stc=1
I was looking for one of these but i could not find one available for Australia. And few that i did find were over priced.
But it's all good now, i'll just use the 5v2.5a power adapter that i have.
This is the one I recommend for my breakout boards.
https://www.homanndesigns.com/index....products_id=99
Cheers
Peter.
Sent from my iPhone using Tapatalk Pro
I will bookmark this for my next CNC.
Thanks
Yep that one 4 years down the track and still kicking :)