I am a beginner with sensors etc and have a question. Can this pressure sensor be used with a RPI Pico?
https://www.sparkfun.com/products/16476
All of the guides and python library seem to be for Arduino.
We don’t have one ready-made, but my AI thinks this will work:
from machine import I2C, Pin
import time
class SparkFun_MicroPressure:
def init(self, i2c, address=0x18):
self.i2c = i2c
self.address = address
def read_pressure(self, unit=‘PSI’):
Read pressure from sensor
data = bytearray(4)
self.i2c.readfrom_mem_into(self.address, 0x00, data)
raw_pressure = int.from_bytes(data[:3], ‘big’) / 16
Convert pressure to desired unit
if unit == ‘PSI’:
return raw_pressure
elif unit == ‘PA’:
return raw_pressure * 68.947572932
elif unit == ‘KPA’:
return raw_pressure * 0.068947572932
elif unit == ‘TORR’:
return raw_pressure * 51.714932572
elif unit == ‘INHG’:
return raw_pressure * 0.033863881579
elif unit == ‘ATM’:
return raw_pressure * 0.000680459553
elif unit == ‘BAR’:
return raw_pressure * 0.006894757293
else:
raise ValueError(‘Invalid unit’)
Initialize I2C bus and micropressure sensor
i2c = I2C(scl=Pin(5), sda=Pin(4))
mpr = SparkFun_MicroPressure(i2c)
while True:
print(“{:.4f} PSI”.format(mpr.read_pressure(‘PSI’)))
print(“{:.1f} Pa”.format(mpr.read_pressure(‘PA’)))
print(“{:.4f} kPa”.format(mpr.read_pressure(‘KPA’)))
print(“{:.3f} torr”.format(mpr.read_pressure(‘TORR’)))
print(“{:.4f} inHg”.format(mpr.read_pressure(‘INHG’)))
print(“{:.6f} atm”.format(mpr.read_pressure(‘ATM’)))
print(“{:.6f} bar”.format(mpr.read_pressure(‘BAR’)))
print()
time.sleep(0.5)
This MicroPython code assumes that you are using an ESP32 or another board with I2C support and have connected the sensor to pins 4 (SDA) and 5 (SCL). You may need to adjust these values depending on your hardware setup.