how to interface strip froce sensing resistor with microcontroller 8051

[Teh Choo Chin]

Hi,

 

Currently i was using strip force sensing resistor and microcontroller 8051 board for my final year project. My problem is how to interface the strip force sensing resistor with 8051 ? Is this project difficult to program ? Thanks.

[AJISH ALFRED]

Hi,

Connet your sensor to an ADC and then interface the ADC to the 8051. Not that much difficult, you can find a lot of examples of interfacing ADC with 8051 from the web.

[Teh Choo Chin]

Hi,

 

The strip force is like normal resistor. It connect with LED then when press the strip the LED will light up. My strip force range is 10g-1kg. Now the problem is when i step on the strip, the LED still will light up. Below is my program:

 

             ORG 0000H
             MOV R1, #00000000B
 
TEST:   ORL P3, #0FFH
             JNB P3.0, CASE1
             AJMP TEST
  
CASE1: MOV A, R1
              MOV P1, A
              XRL A, #00001111B
              MOV P1, A
              AJMP TEST

 END 

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