7 seg i2c lcd

[carlswanson60]

How and where do I code the brightness for this lcd? I found some examples but can't get it to work.

[adafruit_support_bill]

Can you post a link to the specific display you are asking about?

[carlswanson60]

I am trying to use your project for displaying temp and time, I don't want to use a switch and would like the script to just automatically display temp delay and then time.
Please be kind to me and show me how to do it within the script.
Large 7 seg lcd Pi-based Thermometer and Time
This project combines a whole heap of modules to enable a Raspberry Pi to power a large 1.2 inch 4 digit 7 segment display. A small switch switches the display between showing the temperature and the current time
Your help would be appreciated.
Thanks, Carl Swanson

[adafruit_support_bill]

To alternate between time and temperature, change the main part of the program loop to:

Code: Select all

while True:
        segment.clear()
        display_temp()
        segment.write_display()
        time.sleep(1.0)
        segment.clear()
        display_time()
        segment.write_display()
        time.sleep(1.0)

[carlswanson60]

Thank you very much!

[carlswanson60]

Got that figured out, now new problem, timestamp within PIR program is not incrementing, prints the same number each time.

Code: Select all

#!/usr/bin/python

import time
import RPi.GPIO as GPIO
import os
import datetime
from datetime import datetime, timedelta
t = datetime.now() + timedelta(seconds=3000)
print(t)

GPIO.setmode(GPIO.BCM)

GPIO.setmode(GPIO.BCM)
#GPIO.setwarnings(False)

led1 = 21

pirPin = 17

GPIO.setup(led1,GPIO.OUT)
GPIO.setup(pirPin, GPIO.IN)


print t


def LIGHTS(pirPin):

    """Turns LEDS On and Off"""
    print(t)
	
    print("Lights on")
    GPIO.output(led1,GPIO.HIGH)
   

    time.sleep(7)

    print("Light off")
    GPIO.output(led1,GPIO.LOW)
    

print("Motion Sensor Alarm (CTRL+C to exit)")
time.sleep(.2)
print("Ready")
print t

try:
    GPIO.add_event_detect(pirPin, GPIO.RISING, callback=LIGHTS)
    while 1:
    
        time.sleep(1)
except KeyboardInterrupt:
    print("Quit")
    GPIO.cleanup()

[carlswanson60]

Got that figured out, now new problem, timestamp within PIR program is not incrementing, prints the same number each time.
#!/usr/bin/python

import time
import RPi.GPIO as GPIO
import os
import datetime
from datetime import datetime, timedelta
t = datetime.now() + timedelta(seconds=3000)
print(t)

GPIO.setmode(GPIO.BCM)

GPIO.setmode(GPIO.BCM)
#GPIO.setwarnings(False)

led1 = 21

pirPin = 17

GPIO.setup(led1,GPIO.OUT)
GPIO.setup(pirPin, GPIO.IN)


print t


def LIGHTS(pirPin):

"""Turns LEDS On and Off"""
print(t)

print("Lights on")
GPIO.output(led1,GPIO.HIGH)


time.sleep(7)

print("Light off")
GPIO.output(led1,GPIO.LOW)


print("Motion Sensor Alarm (CTRL+C to exit)")
time.sleep(.2)
print("Ready")
print t

try:
GPIO.add_event_detect(pirPin, GPIO.RISING, callback=LIGHTS)
while 1:

time.sleep(1)
except KeyboardInterrupt:
print("Quit")
GPIO.cleanup()