python - How to get meassurement from Flexiforce through Lopy

Question

Hello everyone my code is working now through several comments. But I don't get any meassurements now. I work with Lopy, micropython.

I use the following materials:

• https://www.sparkfun.com/products/8685 (Flexiforce meassurement for weight)
• https://pycom.io/product/lopy4/ (Pycom LoPy4)
• https://pycom.io/product/expansion-board-3-0/ (Expansion board)

This is my Micropython code:

import pycom
import machine
import time
from machine import Pin


adc = machine.ADC()             # create an ADC object
apin = adc.channel(pin='P19')   # create an analog pin on P16
val = apin()                    # read an analog value

def main():
    while True:
        print(val)
        time.sleep(5)

if __name__ == "__main__":
    main()

The documentation I use is the following link: https://bildr.org/2012/11/flexiforce-arduino/

I converted it to Micropython.

This is my circuit now:

My circuit

Answer 1

等待大神答复