Expansion board

Stemi Shield has a companion expansion board with two sensors and two pumps.

Library

Stemi expansion board library exposes two classes representing the board and two sensors included on it.

expansion_board.py

class Sensor:
    def __init__(board):
        ...

    @property
    def ldr(self):
        ...

    @property
    def temp(self):
        ...

    @property
    def humidity(self):
        ...

class ExpansionBoard:
    sensor1 = Sensor()
    sensor2 = Sensor()

    def __init__(i2c):
        ...

    def read():
        ...

Explanations

	Returns	Description
__init__	an ExpansionBoard instance	creates an instance of ExpansionBoard and sets up two Sensors
read	None	reads current sensor data and saves the values for use
ldr	0-1024 int	returns current value, will call read if enough time has passed since last reading
temp	temp (°C)	returns current value, will call read if enough time has passed since last reading
humidity	0-1024 int	returns current value, will call read if enough time has passed since last reading

Example

main.py

from stemi.expansion_board import ExpansionBoard

eb = ExpansionBoard(i2c)

print(eb.sensor1.temp)
print(eb.sensor1.humidity)

note

i2c is a global variable that you'll be provided with