press button twice to trigger

[robinxyz1]

I have a strange issue with button press. I have to press it twice quickly to trigger action. Pressing it just once or holding it down does not work.

Anyone have the same strange issue I have?

[bolish]

Hi @robinxyz1 ,

I'm experiencing same issue on my side. But it's not really consistent ... Sometime 1 press is OK, sometimes, I need 2 press.

I'm even not sure if it's coming from the module or th buttons...

Did you managed to improve the situation on your side?

Note : buttons I'm using : Buttons

Regards

[robinxyz1]

@bolish Yeah, my problem was because I did not initialize the GPIO pins. I added a startup script to set the pin state and mode for the pins used, that took care of it.

[bolish]

hi @robinxyz1 ,

Thanks for feedback.
Is it something different than setting the Pull Up thing?
I've already added the following into my config.txt ':

# Change the pull on (input) pins 18 and 20
gpio=18,20=pu

But this doesn't seems to be enough.

Could you please let me know how to do your trick "initialize GPIO pins with startup script?

Regards

[robinxyz1]

Hi @bolish

MM was my first Pi project, I am not sure if initialization is the right word. My understanding is it sets the pin state (up/down) and mode (input/output).

In /etc/rc.local, I have a line to run a python script.

/usr/bin/python /home/pi/Initialize-GPIO/initialize-buttons.py

this is the content of initialize-buttons.py, I am using 3 pins, two buttons and an IR sensor.

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(22, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
GPIO.setup(27, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)

HTH

[yhax]

@bolish make sure you have the button wired correctly i.e. on the pin, and on power (use a resistor) not ground.