> 3) My PIC is broken > [ Close to impossible ] I just put one in the trash can. It works fine with leds, but would not drive a servo. I finally broke down and got a scope out. It just would not drive the bits any lower than 1.2 volts! John Ferrell 6241 Phillippi Rd Julian NC 27283 Phone: (336)685-9606 johnferrell@earthlink.net Dixie Competition Products NSRCA 479 AMA 4190 W8CCW "My Competition is Not My Enemy" ----- Original Message ----- From: "Philip Pemberton" To: Sent: Friday, October 31, 2003 4:52 PM Subject: Re: [PIC]: BGMicro LCD1025 40x2 LCD panel > In message > llile@SALTONUSA.COM wrote: > > > Are you still able to buy KS0066's? I thought they were obsoleted. I > > seem to remember this being nightmare #12 in my last LCD project. > If they've been obsoleted, then I'm going to jump for joy. Thus far, every > LCD I've had trouble driving had a Samsung KS0066 controller fitted. > > Incidentally, I've been playing around with the LCD code - I increased the > instruction delay to 50uS and the initialisation delay to 50mS. Still > nothing, even if I follow Samsung's "official" initialisation flowchart. That > leaves four possibilities: > 1) The display is broken > [ Unlikely, it's responding to some commands at least ] > 2) The code is broken > [ Maybe, but the code drives other displays fine ] > 3) My PIC is broken > [ Close to impossible ] > 4) The 16F628's internal oscillator is running faster than my code can > handle. > [ Still need to research this one ] > > I think I can rule out #3 because the 16x1 LCDs work fine in exactly the same > driver circuit. I've got a 1A power supply hooked up, so it can't be a power > supply fault. There's a 100nF and a 22uF on the supply lines - that pretty > much rules out PSU noise. Frankly, I'm stumped. > If I use the code I uploaded to piclist.com, I can get the cursor to appear > briefly, then it vanishes within a second. > > Has anyone here managed to get one of the BGmicro 40x2 display panels to, > erm, display something? Some code that's known to work would be very helpful > at this stage. > > Later. > -- > Phil. | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB, > philpem@dsl.pipex.com | ViewFinder, Ethernet (Acorn AEH62), > http://www.philpem.dsl.pipex.com/ | 8xCD, framegrabber, Teletext > Diagonally parked in a parallel universe. > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.