kopia lustrzana https://github.com/pimoroni/pimoroni-pico
![]() Create a new PimoroniI2C object internally if a "machine.I2C()" object is supplied in constructors. |
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README.md | ||
breakout_scd41.c | ||
breakout_scd41.cpp | ||
breakout_scd41.h | ||
micropython.cmake |
README.md
SCD41 CO2 Sensor Driver
Getting Started
Construct a new PimoroniI2C instance for your specific board. Breakout Garden uses pins 4 & 5 and Pico Explorer uses pins 20 & 21.
Since SCD41 has a fixed I2C address and the Sensirion SCD4x library is used under the hood, it's wrapped up as a module for Python.
Import the breakout_scd41
and call init
to set up I2C:
import time
import pimoroni_i2c
import breakout_scd41
i2c = pimoroni_i2c.PimoroniI2C(4, 5)
breakout_scd41.init(i2c)
Taking Measurements
Before taking a measurement you must start periodic measurement by calling start()
.
Poll on ready()
and use measure()
to read the result when it's True
:
breakout_scd41.start()
while True:
if breakout_scd41.ready():
co2, temperature, humidity = breakout_scd41.measure()
print(co2, temperature, humidity)
time.sleep(1.0)
The measure()
method will return a Tuple containing the CO2 reading, temperature in degrees C and humidity.