Hi
I recently bought this LCD PCB kit (i2c version):
http://www.ebay.co.uk/itm/I2C-LCD-IC-kit-for-the-Raspberry-Pi-Arduino-PWM-Backlight-P018-/310760800446
Unfortunately, I cannot get it to display text at all, and the contrast knob doesn't work either. I even tried hooking up the kit to an old Raspberry Pi to no avail either, just to see if it was the software.
This is my first soldering project, so I suspect it is because I've messed something up.
Information on this product is very scarce, and the pages linked to by the seller are pretty much the only available resources:
http://www.pichips.co.uk/index.php/P017_LCD_Chip
http://www.pichips.co.uk/index.php/PO17_LCD_Construction
I've attached some pictures which show my wiring setup, the pcb itself and the result. I had to resize them to post them, so I hope you can see what you need (otherwise I will reupload them). As you can see, only backlight control is possible. I must admit I'm a bit worried about the 4-pin headers, as I seem to have soldered them particularly poorly.
Any ideas?
Thanks