BS2 -> 74HC595 -> LCD (source code)
Hi Jon:
Is there a cheapo 1x16 display, especially something from digikey that would
work with your code?
Which display did you use to develop your code?
Thanks again,
Mark
Original Message
From: JonWms@a... <JonWms@a...>
To: plunkettm@e... <plunkettm@e...>
Date: Monday, September 04, 2000 2:26 PM
Subject: Re: BS2 -> 74HC595 -> LCD (source code)
>In a message dated 9/4/00 2:39:32 PM Central Daylight Time,
>plunkettm@e... writes:
>
>> I just got it working, thank you very much for the code.
>> I did have to figure out to connect 5 R/W on the LCD to ground.
>>
>> Wish I could figure out how setting the LCD in 8 bit mode makes is work
>with
>> only 4 data lines.
>> Seems like these Hitachi HD44780 controllers might have a few
undocumented
>> features.
>>
>> And somehow I can't see "Volts" part of the "Nuts & Volts".
>>
>> But it works great and I'll figure out the rest of it.
>>
>> The smiley face is pretty cool!
>>
>> Can't wait till I start getting Nuts & Volts, looks like I'll be
ordering a
>> few back issues as well.
>>
>> Best Regards,
>>
>> Mark
>
>Mark:
>
>Glad it worked for you. The 8-bit part of the 4-bit initialization is
called
>out in the Hitachi specs. Who knows why?...
>
>The reason that you're not seeing the "Volts" in your display is that it is
>actually a two-line display physically configured as one line. They're a
>headache.... Anyway, you can get to the middle of the display by setting
the
>DDRAM address to line two. This doesn't help with scrolling though, sorry.
>
>Regards,
>
>-- Jon
>
Is there a cheapo 1x16 display, especially something from digikey that would
work with your code?
Which display did you use to develop your code?
Thanks again,
Mark
Original Message
From: JonWms@a... <JonWms@a...>
To: plunkettm@e... <plunkettm@e...>
Date: Monday, September 04, 2000 2:26 PM
Subject: Re: BS2 -> 74HC595 -> LCD (source code)
>In a message dated 9/4/00 2:39:32 PM Central Daylight Time,
>plunkettm@e... writes:
>
>> I just got it working, thank you very much for the code.
>> I did have to figure out to connect 5 R/W on the LCD to ground.
>>
>> Wish I could figure out how setting the LCD in 8 bit mode makes is work
>with
>> only 4 data lines.
>> Seems like these Hitachi HD44780 controllers might have a few
undocumented
>> features.
>>
>> And somehow I can't see "Volts" part of the "Nuts & Volts".
>>
>> But it works great and I'll figure out the rest of it.
>>
>> The smiley face is pretty cool!
>>
>> Can't wait till I start getting Nuts & Volts, looks like I'll be
ordering a
>> few back issues as well.
>>
>> Best Regards,
>>
>> Mark
>
>Mark:
>
>Glad it worked for you. The 8-bit part of the 4-bit initialization is
called
>out in the Hitachi specs. Who knows why?...
>
>The reason that you're not seeing the "Volts" in your display is that it is
>actually a two-line display physically configured as one line. They're a
>headache.... Anyway, you can get to the middle of the display by setting
the
>DDRAM address to line two. This doesn't help with scrolling though, sorry.
>
>Regards,
>
>-- Jon
>
Comments
plunkettm@e... writes:
> Is there a cheapo 1x16 display, especially something from digikey that would
> work with your code?
>
> Which display did you use to develop your code?
Cheapo displays are hit-and-miss at best. I bought a 1x16 for $5 the other
day at Tanners (in Dallas) that works perfectly and even supports the 5x10
font (hard to find). I got lucky.
I've had pretty good luck with the 1x16 displays from Timeline in Torrance,
CA. You can find their ads in Nuts & Volts and other magazines. The last
time I ordered from Timeline the even through in a copy of the Hitachi manual.
Give 'em a try.