Matrix user forums

hi everyone, I'm from France and working actually on a project that enquired Miac and Flowcode...
The problem is I don't know how to program MIAC to show the temperature in function of the thermistance that I've chosen...
the thermistance name and caracteristics: CTN 10K
Spécifications
résistance nom.: 10 kohm
B-constant (±7%): 4100°K
courant max. admissible: 30mA
constante de dissipation thermique: 6mW/°C
constante de dissipation thermique: 15sec.
dimensions: Ø=5mm

so I think I need to use function Cacul in flowcode to make it happen?? any idea?? I'm confused and dispair!!

T°
-10
-5
0
5
10
15
20
25
30
35
40
45
50

R
55,33
42,32
32,65
25,39
19,9
15,71
12,49
10
8,057
6,531
5,327
4,369
9,369

V
1,83682841
2,293577982
2,813599062
3,390788358
4,013377926
4,667444574
5,335704758
6
6,645622196
7,259088984
7,829320806
8,351311852
6,195466983

N
39
48
59
72
85
99
113
127
141
154
166
177
131


these are some values that I made

so I guess Miac will read the tension...but the tension read must be Convert to analogy and display in temperature number please!! help!![list=][/list]

Hello,

Have you seen the sensor1 example from the MIAC examples download?

http://www.matrixmultimedia.com/softwar ... amples.zip

I did but it doesn't help!! I need it to read the tension deliver by the thermistance then convert it in binary to finally display it in real temperature!!

actually it helps a bit but not exactly what I want :/

Hello,

I normally use a excel spreadsheet to generate a look up table and then use that data inside the microcontroller Flowcode program.

uhm...actually I can't open the flowcode file ... but thanks for the excel that's awsome

Hello,

You could use the example program located here to show you how look up tables work in Flowcode.

http://www.matrixmultimedia.com/mmforum ... =26&t=3543

Let us know how you get on.

things are getting better since we have talked...uhm I didn't use your program actually...I did another way...right now I'm having a new problem ... but I don't know how to explain ... if you let me to send you an image to explain?? how can I send it to you??

Hello,

You can attach images and programs to the forum. See the upload attachment tab below the posting window when you are creating a post.