Pressure Transducer Voltage Reading

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bec
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Pressure Transducer Voltage Reading

Unread post by bec » Thu Oct 10, 2019 11:07 pm

I have a pressure transducer hooked to my C1 board. Max output voltage of 1.8v when I read the voltage with a volt meter it reads .5v but this is what the odroid c1 is reading. The voltage is reading all over the place.
I tried to put a resistor in to ground and 1.8v.
Any ideas thank you!!

["Analog Input 0" <AIN0>] value is: 1022 (1.8 VDC)
["Analog Input 0" <AIN0>] value is: 1016 (1.8 VDC)
["Analog Input 0" <AIN0>] value is: 1022 (1.8 VDC)
["Analog Input 1" <AIN1>] value is: 295 (0.5 VDC)
["Analog Input 1" <AIN1>] value is: 0 (0.0 VDC)
["Analog Input 0" <AIN0>] value is: 736 (1.3 VDC)
["Analog Input 1" <AIN1>] value is: 90 (0.2 VDC)
["Analog Input 0" <AIN0>] value is: 348 (0.6 VDC)
["Analog Input 1" <AIN1>] value is: 10 (0.0 VDC)
["Analog Input 0" <AIN0>] value is: 13 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 167 (0.3 VDC)
["Analog Input 0" <AIN0>] value is: 0 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 79 (0.1 VDC)
["Analog Input 1" <AIN1>] value is: 0 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 83 (0.1 VDC)
["Analog Input 1" <AIN1>] value is: 110 (0.2 VDC)
["Analog Input 1" <AIN1>] value is: 521 (0.9 VDC)
["Analog Input 1" <AIN1>] value is: 1023 (1.8 VDC)
["Analog Input 1" <AIN1>] value is: 194 (0.3 VDC)
["Analog Input 1" <AIN1>] value is: 964 (1.7 VDC)
["Analog Input 1" <AIN1>] value is: 0 (0.0 VDC)
["Analog Input 0" <AIN0>] value is: 152 (0.3 VDC)
["Analog Input 0" <AIN0>] value is: 172 (0.3 VDC)
["Analog Input 0" <AIN0>] value is: 389 (0.7 VDC)
["Analog Input 0" <AIN0>] value is: 166 (0.3 VDC)
["Analog Input 0" <AIN0>] value is: 0 (0.0 VDC)
["Analog Input 0" <AIN0>] value is: 16 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 946 (1.7 VDC)
["Analog Input 0" <AIN0>] value is: 0 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 0 (0.0 VDC)
["Analog Input 0" <AIN0>] value is: 30 (0.1 VDC)
["Analog Input 0" <AIN0>] value is: 202 (0.4 VDC)
["Analog Input 0" <AIN0>] value is: 588 (1.0 VDC)
["Analog Input 0" <AIN0>] value is: 1023 (1.8 VDC)
["Analog Input 1" <AIN1>] value is: 84 (0.1 VDC)
["Analog Input 1" <AIN1>] value is: 0 (0.0 VDC)
["Analog Input 1" <AIN1>] value is: 1016 (1.8 VDC)

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Re: Pressure Transducer Voltage Reading

Unread post by odroid » Fri Oct 11, 2019 9:26 am

Do you have a variable resistor or volume to test the ADC inputs stability first?

Also check the pressure transducer output current.

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