Right guys, This might be a dificult one to solve. I do my best to describe what I've got and what's going wrong.
So I've just bought a LCD Screen off ebay, cheap one from Hong Kong with a Back light. Here it is:
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&rd=1&item=230156093498&ssPageName=STRK:MEWN:IT&ih=013
Since i wish to interface this with my Picaxe 28X microcontroller, i also purchased the serial firmware chip from microzed.com.au - Link - http://www.microzed.com.au/PDF/FRM010.pdf
So I've made my PCB, its all printed out and what not. Spent part of the day wireing it all up. All fine, checked it over etc and then turned the power on. Back light turned on and also some white boxes on the LCD screen (It's ment to display a welcome msg). I just can't work out what I have done wrong. It seems like its shorting out somewhere, but i cant find it.
So I've been looking at the data sheet and I dont understand part of it. On the "LCD module connetions" of the firmware manual and Vss, R/W d0, d1, d2 and d3 is connected to 0v and ALSO it states that these lines should be connected to Pin 5, which is infact 0v as well (easer to see on the manual). Is that a mistake??
Can any one suggest a solution that may help me out here? I understand that its far fetched but I really am stuck here.
Cheers
So I've just bought a LCD Screen off ebay, cheap one from Hong Kong with a Back light. Here it is:
http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&rd=1&item=230156093498&ssPageName=STRK:MEWN:IT&ih=013
Since i wish to interface this with my Picaxe 28X microcontroller, i also purchased the serial firmware chip from microzed.com.au - Link - http://www.microzed.com.au/PDF/FRM010.pdf
So I've made my PCB, its all printed out and what not. Spent part of the day wireing it all up. All fine, checked it over etc and then turned the power on. Back light turned on and also some white boxes on the LCD screen (It's ment to display a welcome msg). I just can't work out what I have done wrong. It seems like its shorting out somewhere, but i cant find it.
So I've been looking at the data sheet and I dont understand part of it. On the "LCD module connetions" of the firmware manual and Vss, R/W d0, d1, d2 and d3 is connected to 0v and ALSO it states that these lines should be connected to Pin 5, which is infact 0v as well (easer to see on the manual). Is that a mistake??
Can any one suggest a solution that may help me out here? I understand that its far fetched but I really am stuck here.
Cheers