Questions tagged [gpiozero]
For questions relating to the python gpiozero library.
0
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0answers
16 views
Gpiozero inside custom function
So I have a odd problem.
I have raspberry pi model 3 using gpiozero in python 3.
Just trying to turn on the motor at half speed when calling the function.
Issue is that nothing happens when ...
0
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0answers
21 views
GUI lag using Tkinter to update a dynamic label counter [closed]
I've created a simple program to change the LED blink rate (using a Raspberry Pi 2B running Raspbian) based on a GUI button input.
The code works, but the problem I'm having is that there is a ...
2
votes
1answer
21 views
Attribute and Type Error using Button class in Tkinter/GPIO Zero combination
I'm new to programming and I'm trying to write a simple program to change the blink rate of an LED using a GUI.
When I try to run this on my RaspberryPi 2B running Raspbian, I get the following ...
0
votes
1answer
28 views
Using `gpiozero` on `raspberry pi` to control pins, but output pins are reset upon script exit, even though state is remembered between runs
I am using gpiozero to control devices on the Raspberry Pi. When I create a reference to (for example) an LED device, there is a parameter for creating the object without effecting it's current state:...
1
vote
1answer
89 views
Python IDLE (mu-editor) “RuntimeError: Failed to add edge detection ” Error
from gpiozero import Button
from signal import pause
def say_hello():
print("Hello!")
button = Button(2)
button.when_pressed = say_hello
pause()
The above code works nicely in when I run it ...
0
votes
1answer
57 views
Wiring Omron D6T Thermal Sensor to Raspberry Pi Zero W with Adafruit T-Cobbler Plus
I have a Raspberry Pi Zero W connected to a Adafruit T-Cobbler Plus and breadboard. My question is regarding wiring. I have followed tutorials to create simple circuits, however, I am struggling to ...
-2
votes
1answer
67 views
Understanding the GPIO pins
I've not yet got into the GPIO pins. Can someone help me understand how they work? Are some of them special in some way? Do certain pins produce certain polarities or is that software defined? What ...
2
votes
1answer
55 views
LED not blinking
Raspberry Pi Zero Wireless
I have a Pi Zero connected to a breadboard using the GPIO Extension Board and ribbon cable.
I have followed several of the basic blinking LED tutorials.
One jump cable is ...
1
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1answer
44 views
Monitor GPIO activity to debug possibly broken script
I recently picked up a b3+ and a nespi+ case. The case comes with a power and reset button and provides a script for the safe shutdown and for the most part has been driving me insane.
I've fixed the ...
0
votes
1answer
52 views
RpiZeroW - Can't find `pigpio` while running Python code
I have a python code, using gpiozero. When running this code on a RPI-ZEROW it fails, while running same code on RPI3 it succeeds. All installed pretty much the same ( shown checks below ), pigpio is ...
0
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1answer
177 views
gpiozero : Not working, no error messages
I can't make gpiozero to work. Here is my config:
raspbian on raspberry 3B V1.2
$ python -V
return: python 2.7.13
$ python3 -V
return: python 3.5.3
which mean that I have several version of ...
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0answers
37 views
HTTPServer / FTPServer loop colliding with callback thread
I am building an alarm application. I have a few PIR sensors and webcams.
The application contains a webserver I use to manage the alarm from a mobile application done with kivy.The webcams upload ...
0
votes
2answers
381 views
How can I wait for two presses of the button then run function in while loop
I am trying to compute the difference between two images with OpenCV on Raspberry Pi and I want the script to run continually like in a while loop and then after the first button press store the first ...
1
vote
1answer
196 views
Fail to run Remote GPIO code from a PC using python3
I'm trying to run a remote GPIO code from a Linux machine to operate on RPI3.
Code is running OK on another RPI3 to control each other, but when trying to do so from a PC, it fails.
I followed the ...
0
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0answers
91 views
Remote GPIO Control Help
Detailed Storyline Of What I Am Trying To Do:
I have two raspberry pis, RaspiA and RaspiB. I want to control the GPIOs of RaspiB remotely from RaspiA.
I followed the instructions from http://...
3
votes
2answers
3k views
Failed to create MMAL component b'vc.ril.camera': Out of memory
I am trying to run a simple script that listens for a button click and then takes a picture. Once two pictures have been taken it compares the two using OpenCV to calculate the difference. I am ...
0
votes
1answer
266 views
Difference in using an LED with gpiozero vs. RPi.GPIO
I'm trying to turn on an LED and it was trivial with the gpiozero library. The following works just as expected.
# Version 1 (working)
import gpiozero
import time
led = gpiozero.LED(21)
led.on()
...
1
vote
1answer
258 views
Showing “ssh packet_write_wait broken pipe” error while taking button input on Pi
I was trying to write a program which can take input from button. Here is the code:
from gpiozero import Button
btn = Button(4)
while True:
btn.wait_for_press()
print('You pressed me')
...
1
vote
2answers
539 views
Run gpio script from startup to listen for button press and then execute command and bash script
I have this python script that is intended to run from startup and listen for a buttonpress. If there is a buttonpress (held for 2s) the gpio script should run two bash scripts. The python script runs ...
0
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0answers
111 views
Python, RpiZero and gpiozero
I'm coding on Rpi3 using python3. When trying to run a code, containing a gpiozero lib - it fails when running on RpiZero, while succeeds on Rpi3.
RpiZero contains gpiozero lib
Trying to find the ...
0
votes
1answer
56 views
MC3008 vs. Justboom amp
I just ordered the Justboom AMP Zero pHAT. My project needs reading analog signals, too. So I also ordered a MCP3008 in order to convert from analog to digital.
My question: is it possible to connect ...
0
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1answer
147 views
Running Flask on Pi Zero getting uneven PWMLED
This is my first trial run using a Raspberry Pi Zero W to run RGB LEDs following this tutorial: https://dordnung.de/raspberrypi-ledstrip/
I've completed the tutorial, have everything wired up, and ...
0
votes
2answers
812 views
function button.is_pressed from gpiozero do not work
Im working on a university project with raspberry and gpiozero.
I need to manage the button response to take diferent actions.
The problem is that de function button.is_pressed its always true (even ...
0
votes
1answer
311 views
GPIOs of Pi3 not working
Problem Description
I have experienced some problems with the GPIOs on my Pi3.
From one day to another the MotionSensor and the LED strip that where connected to the GPIOs stopped working while the ...
0
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0answers
311 views
Direct control of GPIO pins using gpiozero without using Button or LED interface
Using gpiozero, is there a way to directly control the GPIO pins of the Raspberry Pi? I know gpiozero has objects such as Buttons and LED for input and output. However I would like to access the pins ...
0
votes
1answer
452 views
Ultrasonic program in raspberry pi stops working after some time
Below is the code I'm running on my raspberry pi zero to detect the range by Ping))) ultrasonic.
after some time (ex: 300 pings) the program uses most of the CPU (90%) and then it stops working, is ...
1
vote
1answer
146 views
Upgrade to gpiozero 1.4 on Jessie breaks gpiozero
On a stock Jessie install, gpiozero works. E.g.
>>> from gpiozero.devices import pin_factory
>>> print(pin_factory)
<class 'gpiozero.pins.rpigpio.RPiGPIOPin'>
I then upgrade ...
1
vote
2answers
784 views
Using GPIOZERO button for 2 functions (Long/Short press )
I'm trying to make a dual use of 1 button:
first use ( short press ) to exectute function "A", a second use ( long press ) to execute function "B".
function A is executed after button1.when_pressed = ...
3
votes
1answer
321 views
PiCamera, PIR Motion Sensor 'Attribute Error: __exit__'
I'm pretty new to both Python and utilizing the GPIO pins on my Raspberry Pi. I am trying to make a "trail camera" that will take pictures of birds when they land on the branches of the trees just off ...
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1answer
47 views
Raspberry Pi Zero get 5 V directly from the input
I have a Raspberry Pi Zero and I would like a tiny fan which draws 90 mA.
Obviously, I can't connect it to the GPIO pins and therefore I need to get 5 V from the input cable.
Before I ...
0
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1answer
316 views
gpiozero: Ignore false positives/negatives
I've seen several threads where users experience some noise fluctuation in the GPIO input readings, for instance, without any physical change to a Button's state, the events when_released/when_pressed ...
0
votes
2answers
156 views
Weird LED behaviour
I run my program:
from gpiozero import PWMLED
ledpins = [2, 3, 4]
z = 10
for i in ledpins:
PWMLED(i).blink(on_time=1/z, off_time=1/z, n=3)
I tried it and got:
Exception Exception ...
0
votes
0answers
161 views
Docker and IRQs disabled
Using a custom Docker image based on resin/raspberrypi-python, I have some code that accesses the GPIO to control some Energenie plugs.
The container runs as --privileged.
When I try to access the ...
4
votes
2answers
788 views
Python parallel processes for raspberry pi zero…possible?
I'm trying to setup a concurrent photo capture and immediate email of said capture (triggered by a PIR motion sensor) in a Python script. Basically what I'm trying to accomplish is to have my Pi take ...
1
vote
1answer
1k views
Python picamera module: Interval photo capture while recording video
So I've been trying to figure this out for a while now, without success. I am using a RPi Zero Rev 1.3 model and have connected it to the 8MP RPi camera along with a PIR motion sensor. What I'm ...
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votes
1answer
55 views
pi camera will not work with Pi zero
My Pi camera will not work with the Pi zero using the same python code I use on my Pi 3 or Pi 2
Is there something I am missing?
0
votes
1answer
554 views
GPIOzero motor backward and forward pins
When creating a new motor object from the GPIOzero module like this: import gpiozero, then motor1 = gpiozero.Motor() you need to specify the backward and forward pins. What does that mean and what if ...
4
votes
1answer
1k views
GPIOZero button not working
I've been getting into GPIO recently with the GPIOZero library but when i first tried it today it completely failed. As my first foray into GPIO i set up a circuit to light up an LED with the push of ...
2
votes
1answer
1k views
gpiozero button callback running only once
I'm getting started with a project on a Raspberry Pi (never done anything with RPi or python before, so it's all new to me, but I've done a little Arduino stuff). I'm trying to create a very simply ...
2
votes
1answer
4k views
Unable to locate package python-gpiozero
I've just run
apt-get update
and
apt-get upgrade
on Raspbian, but when I try
apt-get install python3-gpiozero python-gpiozero
it can't find either package.
Can't find any evidence of ...
