[chbot] Lcd Problem

[John Tiler]

You have sorted it. It sounded like a timing problem. Some LCD controllers 
ie. HD44780 clones are susceptible to outputting 'bad' data when the LPT 
data is coming out of the computer faster than the clone can process it.

It's a pain that different manufacturers have different timing requirements. 
This means that each LCD you buy will need to have it's own timing settings. 
So, consider buying from only one supplier / brand.

John


>From: "Ben Devine" <bdevine@gmail.com>
>Reply-To: chchrobotics@lists.linuxnut.co.nz
>To: chchrobotics@lists.linuxnut.co.nz
>Subject: Re: [chbot] Lcd Problem
>Date: Thu, 18 Jan 2007 16:40:42 +1300
>
>On 1/18/07, Andrew Errington <a.errington@lancaster.ac.uk> wrote:
>> > Looking at doing a carputer. But Im still unsure, Im using the un-used
>> > ps2 port to draw +5v for the lcd. Its mounted in a lightbulb box. Its
>> > amazing how much difference a decent soldering station can help, I
>> > tried this around 6months ago with a cheapie $30 soldering iron.
>>
>>Gnarly!  I built one a while back, for playing MP3s in the car.  It was
>>most excellent- let me know if I can help with anything specific.
>>
>>My soldering iron of choice at the moment is the Dick Smith battery
>>operated one T2502.  It has a fine tip, and stays cold (??! No, that's a
>>good thing!).  When you press the button it heats up in about 10 seconds,
>>and you can solder with it for ages (or for a short time).
>>
>>I see Dickie's now carries the ColdHeat soldering iron T2510.  I have 
>>heard
>>these are very good.  The tip heats up almost instantly.
>>
>>To run my soldering iron I bought a set of Varta fast charge AA cells and 
>>a
>>charger.  They recharge in 15 minutes.  I used to use a gas soldering 
>>iron,
>>but I found I was using a lot of gas (mostly because it seemed to excape
>>from the iron over a few weeks if it was not used), and it was fiddly to
>>light and took a couple of minutes to warm up.
>I might look into getting one as I have just been "borrowing" my works one.
>
>>I sometimes miss having a 'proper' soldering station on my bench though.
>>
>> > > The next meeting will be 21 February, being the third Wednesday of an
>> > > even-numbered month.
>> >
>> > Excellent.
>> > I shall Attend.
>>
>
>On the way home from work Im going to pop in-to DSE and pickup
>http://tinyurl.com/ysnc2e , It looks like a very good base for a
>simple line follower,
>Any Suggestion on what controller I should look at getting Picaxe, stamp, 
>other?
>
>Thanks,
>Ben Devine
>
>_______________________________________________
>Chchrobotics mailing list
>Chchrobotics@lists.linuxnut.co.nz
>http://lists.ourshack.com/mailman/listinfo/chchrobotics

_________________________________________________________________
Get in the mood for Valentines’ Day. View photos, recipes and more on your 
Live.com page. 
http://www.live.com/?addTemplate=ValentinesDay&ocid=T001MSN30A0701