CircuitPython Libraries with the Binho Nova Multi-Protocol USB Host Adapter

by Francis Guevarra and

published December 18, 2019, last edited March 08, 2024

posted in Sensors CircuitPython Programming/ Python

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Beginner

Project guide

I2C

Pin connections from Nova to a BME280:

Nova IO0 to SDI
Nova IO2 to SCK
Nova 3V3 to VIN
Nova GND to GND

Example code

This example uses Adafruit’s busio package to create an I2C object.

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import time
import board
import busio
import adafruit_bme280

# Create library object using our Bus I2C port
i2c = busio.I2C(board.SCL, board.SDA)
bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c)

# change this to match the location's pressure (hPa) at sea level
bme280.sea_level_pressure = 1013.25

while True:
  print("\nTemperature: %0.1f C" % bme280.temperature)
  print("Humidity: %0.1f %%" % bme280.humidity)
  print("Pressure: %0.1f hPa" % bme280.pressure)
  print("Altitude = %0.2f meters" % bme280.altitude)
  time.sleep(2)

import time
import board
import busio
import adafruit_bme280

# Create library object using our Bus I2C port
i2c = busio.I2C(board.SCL, board.SDA)
bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c)

# change this to match the location's pressure (hPa) at sea level
bme280.sea_level_pressure = 1013.25

while True:
  print("\nTemperature: %0.1f C" % bme280.temperature)
  print("Humidity: %0.1f %%" % bme280.humidity)
  print("Pressure: %0.1f hPa" % bme280.pressure)
  print("Altitude = %0.2f meters" % bme280.altitude)
  time.sleep(2)