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emonGLCD PCB layout fault found

Submitted by Guest on Wed, 27/02/2013 - 18:57

Hi,

Sorry if this is already known about, but I believe I have found a fault with the PCB on emonGLCD v1.4.

DIG8 is supposed to be available for use on the JeePort, however during the latest board update(1.3->1.4) a layout error has crept in and DIG 8 and DIG 6 are shorted together by an extra bit of track next to pin 12 of the microcontroller (circled in picture).

Board error

 

Ideally this needs to be fixed in the next PCB revision. The label on the JeePort is also incorrect: It reads DIO6 where it should read DIO8.

Fortunately the existing PCB can be fixed with some careful use of a scalpel, and this can even be performed after the components are soldered in. By carefully cutting the track next to pin 12 of the microcontroller (as shown below) the circuit will work as intended.

 

 

Hope someone finds this useful!

 

AL

 

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robw's picture

Re: emonGLCD PCB layout fault found

Submitted by robw on Wed, 27/02/2013 - 19:24.

Wow. Thanks. I have. I'm trying to read the voltage from a lipo using a voltage divider but its been showing weird values. From memory it looked like it was tied to the LDR but could not see how that could be true. Will try your fix tomorrow and report back. 

 

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glyn.hudson's picture

Re: emonGLCD PCB layout fault found

Submitted by glyn.hudson on Tue, 12/03/2013 - 16:28.

Thanks guys, this will be fixed in the next revision.

Cheers, 

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fluppie007's picture

Re: emonGLCD PCB layout fault found

Submitted by fluppie007 on Thu, 30/05/2013 - 23:18.

Lol, now I see why my BMP085 module on the JeePort didn't work as expected...

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