Good afternoon, I can’t figure out how to write the code. We read the value from the database, if it exceeds, say, 2000, then we turn on the relay via GPIO.
How to read - I understood.
How to read - I understood.
import struct import sys import time import datetime import pymysql.cursors import wiringpi from wiringpi import GPIO connection = pymysql.connect(host='127.0.0.1', user='root', password='2548695542', db='sd', charset='utf8mb4', cursorclass=pymysql.cursors.DictCursor) with connection: cur = connection.cursor() cur.execute("SELECT * FROM ddd1 ORDER BY id DESC LIMIT 1") rows = cur.fetchall() for row in rows: print(row["weight"])How to turn on the relay - too.
NUM2 = 2 # (wPi-2) orange pi zero 2 wiringpi.wiringPiSetup() wiringpi.pinMode(NUM2, wiringpi.GPIO.OUTPUT); wiringpi.digitalWrite(NUM2, GPIO.HIGH);But I can’t figure out how to connect this together. :-(