according to https://wiki.dfrobot.com/Gravity__I2C_A ... U__DFR0553:Hi,
- The pressure sensor has a 5v input, ground and a 0.5 to 4.5v signal output. (https://www.nukeperformance.com/product ... nsor-cable). i understand that this is a analog signal
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The pi does not have a analog to digital converter build into it and if i want to read analog signals i must have a analog to digital converter. I found one that can be connected to the i2c of the pi. (https://wiki.dfrobot.com/Gravity__I2C_A ... U__DFR0553)
Specification
Supply Voltage (VCC): 3.3~5.0V
Analog Signal Detection Range: 0~VCC
Interface Type: Gravity I2C
Interface Level: High 3.3V, Low 0V
Your sensor requires 5V input which means that you need a 5V source.
The Pi runs on 5V and that means that (theoretically) you can power the sensor from the Pi.
The AD converter requires 3.3V - 5V, the detection range is 0 ... VCC.
That implies that you must run the converter (and sensor) from a 5V source.
The output of the converter is I2C with a maximum 3.3V level.
The GPIO input on the Pi is maximum 3.3V
IMHO there is no problem connecting the sensor through the this ADC to a Raspberry Pi.
Statistics: Posted by Ernst — Sat Feb 24, 2024 11:45 am