Temperature to computer - LCD readout
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Posts: 46,084
> What Monitor ?
>
>> I plan on installing a touch lcd panel in the dash of the car and
have an icon I could click that would display the outside and inside
temperature from temperature sensors connected to the computer.
>
Got it.
A Scott Edwards Serial display will offer a few benifits.
One is that even though a little pricey, the SERIAL LCD can
communicate directly with the Stamp.
There are different versions and one, I think, has additional
switches so you also get more inputs.
The neat thing is that you can get text, BRIGHT text, and even
graphics on those things.
http://www.seetron.com/slcds.htm
With an ADC module, you can use low cost temperature and presssure
sensing parts. Many of the auto sensors are resistive based so you
may be able to tap into them and get a signal out for you
monitoring. Be careful as many autos automatiacally adjust fuel and
such by the sensors, so if your connection alters the raw signal, the
car's computer may try to adjust the what it thinks is a bad reading.
An example might be that if you tapped into the exhaust gas
temperature sensor and your connection changed the signal by 5%, the
car's computer would compensate by altering the fuel flow and you
could either lose gas milage, or run lean an get the motor running
poorly.
(shameless plug) our drop-in ADC offers 10 channels of ADC by making
the Stamp part of a riser stack.
http://www.visualmuses.com/chipcircuit/index.html
There have been some posts on here in the past that discussses auto
applications and the horrible noise that sensors may suffer. Well
worth a search of the archives.
Dave
>
>> I plan on installing a touch lcd panel in the dash of the car and
have an icon I could click that would display the outside and inside
temperature from temperature sensors connected to the computer.
>
Got it.
A Scott Edwards Serial display will offer a few benifits.
One is that even though a little pricey, the SERIAL LCD can
communicate directly with the Stamp.
There are different versions and one, I think, has additional
switches so you also get more inputs.
The neat thing is that you can get text, BRIGHT text, and even
graphics on those things.
http://www.seetron.com/slcds.htm
With an ADC module, you can use low cost temperature and presssure
sensing parts. Many of the auto sensors are resistive based so you
may be able to tap into them and get a signal out for you
monitoring. Be careful as many autos automatiacally adjust fuel and
such by the sensors, so if your connection alters the raw signal, the
car's computer may try to adjust the what it thinks is a bad reading.
An example might be that if you tapped into the exhaust gas
temperature sensor and your connection changed the signal by 5%, the
car's computer would compensate by altering the fuel flow and you
could either lose gas milage, or run lean an get the motor running
poorly.
(shameless plug) our drop-in ADC offers 10 channels of ADC by making
the Stamp part of a riser stack.
http://www.visualmuses.com/chipcircuit/index.html
There have been some posts on here in the past that discussses auto
applications and the horrible noise that sensors may suffer. Well
worth a search of the archives.
Dave