Python，RPi + MCP3008 + 2xForce敏感电阻-正方形

Question

I have a MCP3008 connected to RPi and 2 x Force Sensitive Resistor - Square connected to the MCP3008. The sensors are laying side by side horisontal on my desk and I can read and print the data (0-100) from both sensors (sensor1 and sensor2) separately. I just can't come up with any idea of python code to detect when I touch sensor1 (left) and move my finger to sensor2 (right).

In addition I need to know how many milliseconds it takes from that I touch sensor1 until I lifted from sensor2.

from time import sleep
from gpiozero import MCP3008

sensor1 = MCP3008(1) # Pin 2 on the ADC
sensor2 = MCP3008(2) # Pin 3 on the ADC

# Read data from the ADC
def getData(readSensor):
    value = readSensor
    rawValue = value.value
    return rawValue

while True:
    print('Sensor1 = {0:.0f}'.format(getData(sensor1)*100))
    print('Sensor2 = {0:.0f}'.format(getData(sensor2)*100))
    print('')

    sleep(0.1)

Answer 1

You are going to need to timestamp the events and then use the time stamps to determine what action to take. Something like the below might help you.

if getData(sensor1) > TOUCH_THRESHOLD:
    sensor1LastPressedAt = time.time()

Do the same for sensor2 and compare the time stamps.

(TOUCH_THRESHOLD is the value that you measure to be someone touching the button)