I2C lcd ( arduino ) with PICBASIC, help

[iw2fvo]

Steve,
I did run the program:
P0, P5 and P6 do not toggle: they are always at 0vdc as seen by the scope.
I did check the tracks : there is good continuity between each pin of the PCF and the display pins.
I assume the pcf is gone or the module has been sent with a broken pcf.
As you have seen in the photos, I have changed the contrast pot because it was shorting the 5 vdc to ground , I fit a new one with a "crossed" pins.
Will order a new board from a reliable seller ... I am searching for it here.
Thanks for all.
Ambrogio

[EarlyBird2]

Steve,
I did run the program:
P0, P5 and P6 do not toggle: they are always at 0vdc as seen by the scope.
I did check the tracks : there is good continuity between each pin of the PCF and the display pins.
I assume the pcf is gone or the module has been sent with a broken pcf.
As you have seen in the photos, I have changed the contrast pot because it was shorting the 5 vdc to ground , I fit a new one with a "crossed" pins.
Will order a new board from a reliable seller ... I am searching for it here.
Thanks for all.
Ambrogio

Well done it is the PCF!
I am surprised I thought the PCF was the least likely cause the PCB track or soldering fault was the most likely cause.

[richard]

this looks cheap
http://www.dx.com/p/raspberry-pi-pcf...Q#.U8OsSWflp_Q

[EarlyBird2]

I have bought this



from

http://4tronix.co.uk/store/index.php...product_id=158