topic Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply in LPC Microcontrollers

LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:27 GMT

Content originally posted in LPCWare by suhel on Thu Apr 30 09:17:38 MST 2015

I have fed the power from the external pin to LPC1769 EA development board. But what is see is that after sometime LED1 on the board starts blinking.

Is this an indication of something wrong or all is well (normal behavior).

Could someone please explain, what is going on?

Any form of input would be highly appreciated.

Regards,
Suhel

Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:28 GMT

Content originally posted in LPCWare by suhel on Thu Apr 30 09:19:00 MST 2015
Supply voltage is 4.8v from a regulator, with maximum sourcing ability of 1A (Max)

Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:29 GMT

Content originally posted in LPCWare by R2D2 on Thu Apr 30 15:29:42 MST 2015

Quote: suhel
I have fed the power from the external pin to LPC1769 EA development board. But what is see is that after sometime LED1 on the board starts blinking.

Is this an indication of something wrong or all is well (normal behavior).

Could someone please explain, what is going on?

Any form of input would be highly appreciated.

Could be useful to describe which board you are using :~

Is it the 'LPC1769 LPCXpresso Board' ?

http://www.embeddedartists.com/products/lpcxpresso/lpc1769_xpr.php

Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:30 GMT

Content originally posted in LPCWare by suhel on Thu Apr 30 17:43:58 MST 2015
Sorry for the ambiguity.

Yes, the link points to the board that i am using.

Regards,
Suhel

Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:30 GMT

Content originally posted in LPCWare by R2D2 on Thu Apr 30 18:15:09 MST 2015
There's nothing wrong with supplying the board via J6-2 :)

Probably you've connected USB to connector J3, but anyway, if there are no problems that's nothing to worry about...

Re: LED1 on the LPC1769 EA board starts blinking when powered from external supply

lpcware — Wed, 15 Jun 2016 17:41:31 GMT

Content originally posted in LPCWare by suhel on Sun May 03 19:59:25 MST 2015
Yes i have connected the external supply through J6-2.

I do not see any issues though.

Thanks for the reply.

Regards,
Suhel