Raspberry Pi 3 GPIO LED电路无法正常工作

Question

I am just getting into hardware programming with my Raspberry Pi 3, and I am working on a simple LED program. This is a picture of my circuit

This is my code, which I am running with with the terminal command sudo python LED_TEST_7.py :

import RPi.GPIO as GPIO
import time
pinNum = 18
GPIO.setmode(BCM)
GPIO.setup(pinNum, GPIO.OUT)
GPIO.output(pinNum, GPIO.HIGH)
GPIO.cleanup()

The code runs without errors, and the circuit works when hooked up to a 9v battery. If anyone could help I would really appreciate it.

Answer 1

If between GPIO.output(pinNum, GPIO.HIGH) and GPIO.cleanup() you put a delay? Maybe the transition is very fast.

Eg:

import RPi.GPIO as GPIO
import time
pinNum = 18
GPIO.setmode(BCM)
GPIO.setup(pinNum, GPIO.OUT)
GPIO.output(pinNum, GPIO.HIGH)
time.sleep(0.4)
GPIO.cleanup()