Speaking of OLED ... be aware of limited lifetime, things like 3000=20
hours, 9000 hours, etc. is sometimes specified.  Not sure if that means=20
the display dims to 50% (or whatever) of initial brightness, or pixels=20
drop out, etc.

If it needs to be on all the time this would certainly need to be=20
considered.  If it needs to be on only when someone is fiddling with the=20
menu buttons, no problemo.

These folks may not be cheap enough, but have a nice selection and good=20
datasheets, etc:
<http://www.crystalfontz.com/>

Cheers
J


Perry Curling-Hope wrote:
> I have recently completed a similar design based on a low cost Freescale
> sensor and UP/DOWN buttons in  menu driven arrangement.
>
> I had similar problems related to restrictions upon display size as the
> unit was to be embedded into the doorpost of a laboratory drying unit, th=
e
> doorpost being only 50mm wide overall.
> Standard  LCD character displays are cheap and versatile but too wide, ti=
ny
> ones are too expensive, and I ended up with four tiny 7segment led displa=
ys
> (power hungry, but this is cheaply overcome)
>
> I do not know what micro controller you are using, but your design
> description prompts two general comments.
>
> The new Enhanced Performance PIC micro controllers offer vastly increased
> functionality (and pin count)  at much lower prices than the older
> chips...there is no longer advantage to be gained hacking about with a
> 'small' PIC and in conjunction with shift registers and decoders to try a=
nd
> save costs.
>
> The OLED displays will be ideal if their price is acceptable, the one you
> mention supports both I2C and SPI ( 2 and 4 wire) interfaces, which are
> also supported by many of the newer PIC controllers.
>
>
> On Sat, Sep 22, 2012 at 4:17 AM, Andrew Burchill <dustooff@gmail.com> wro=
te:
>
>> Hi,
>>
>> http://www.displaytech.com.hk/
>> http://www.displaytech-canada.com/products/cogmodules.php
>>
>> any better ?
>>
>> My real problem with purchasing production parts from eBay vendors is
>>> long term supply.  I need to be able to purchase parts for at least a
>>> 5 to 10 year timeframe.
>>>
>>> Please keep the suggestions coming - they all help.
>>
>>
>> regards
>> AB
>> --
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>> View/change your membership options at
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>>
>
>
>
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