i bought from ebay: https://www.ebay.com/itm/292160479941
So it must be the relay - is it an "active low" module and can you show a picture of it and the wiring?
seems "active low" according to description. here is the relay. once i run the py script, relay instantly turns On and refuses to turn Off
. even when i stop the script. running it again gives this error "/home/pi/motion_relay2.py:16: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(RELAY_PIN, GPIO.OUT)
"
i dont know how to get away from error except by rebooting the rpi4.
here is my current schematic based on Claude.ai:
Claude.ai gave me this py script but it is having the exact same issues as before:
Code:
import timeimport RPi.GPIO as GPIO# PIR Motion Sensor GPIO pinPIR_PIN = 4# Relay GPIO pinRELAY_PIN = 17# Time delay before turning off relay (in seconds)DELAY_TIME = 300 # 5 minutesdef setup(): GPIO.setmode(GPIO.BCM) GPIO.setup(PIR_PIN, GPIO.IN) GPIO.setup(RELAY_PIN, GPIO.OUT) GPIO.output(RELAY_PIN, GPIO.LOW) # Relay initially offdef motion_detected(): if GPIO.input(PIR_PIN) == GPIO.HIGH: return True else: return Falsedef turn_relay_on(): GPIO.output(RELAY_PIN, GPIO.HIGH) print("Relay turned on")def turn_relay_off(): GPIO.output(RELAY_PIN, GPIO.LOW) print("Relay turned off")def main(): setup() last_motion_time = time.time() while True: if motion_detected(): turn_relay_on() last_motion_time = time.time() elif time.time() - last_motion_time > DELAY_TIME: turn_relay_off() time.sleep(1)if __name__ == "__main__": main()Statistics: Posted by tung256 — Mon Sep 09, 2024 11:43 pm