Re: TI-H: Temperature Sensors
[Prev][Next][Index][Thread]
Re: TI-H: Temperature Sensors
I use old pens with the ink and ball point assembly removed sometimes. it has
to be an extra large diameter pen though.
I will probaply build them for those interested, but like I mentioned before,
I'm trying to cut back on the hardware upgrades, since it's so time consuming.
I do have like 20-30 temp chips, and I will sell them to those interested.
I will also include some nice instructions on building it.
Sometimes the temp sensors are known for giving slightly eroneous readings,
and I think that it just takes time to adjust, since the entire case of the
chip has to adjust temperature. You also need to make sure the chip is fairly exposed.
The best temp sensor would have the chips top exposed and epoxy or glue around
the rest.
Obviously, that can take time, even for glue. I good temp sensor sometimes
takes 2 or three tries. practice will give you better odds. I still ruin a
chip once in a while. you can't over heat it or it can damage it.
I don't recoment any box. It's wasted space. a capacitor, two diodes, and the
chip. I can make a temp sensor in less than 1 inch by 3/4 by 1/4 inch. I made
one with a built in chip and a cable with a wand style sensor that you could
even dip in water!!!
Practice a bit, and you'll get the hang of it.
I'll also sell you some chips real cheap if you nead more. Never used, still
in the tubes!!!
I'll still build Temp sensors, but only single sensor versions.
My best recomendation is to buy a 9-pin serial header shell.
It's a plastic piece that screws on to the plug that would go into a PC serial
port and the wire, to cover the solder joints and give you something to hold
on to. Simply super glue a piece of plastic to the end and then glue a 10-pin
header for the SPinTerface version, or completely cover the end and have a
tiny hole and run a link cable through. THe big hole can either have the temp
chip, just behind it, if you just want air temp, or you can run 4 wires out
and lead to the chip inside a wand style thing, like a large pen (normal
diameter pens are not round enough). You can solder a metal pin to the ground
and have it touch the bottom side of the chip. This act's like a probe. You
fill the end with glue to seal it, and then it's water proof!
I can give details later.
MaxxKills wrote:
>
> Is anyone interested in buying a fully assembled TI-85
> temperature sensor? They are built in Radio Shack's
> smallest project box. Price is only $12 including shipping!
>
> They can be ready to ship by the end of the month easily.
>
> If interested, please email me at: <A
> HREF="mailto:TICalcToPCLinks@hotmail.com">TICalcToPCLinks@hotmail.com</a>
>
> Thanks!
>
> Lee
> <http://members.aol.com/maxxkills/sales/sales.htm></PRE></HTML>
--
Richard Piotter
richfile@prairie.lakes.com
The Richfiles TI Hardware and BASIC web page:
http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
References: