All Questions

0
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0answers
27 views

Just started with raspberry pi. Any help about where to start? [duplicate]

I just got two Raspberry pi's working today, (I installed raspian), and I really don't know where to learn. I bought a few books, but they only suggest projects, and not how to use the pi. Any help?
1
vote
2answers
49 views

What is the memory in the DS3232 RTC for?

I'm looking for an RTC to use with my Pi and came across the Maxim DS3231M. I also saw a similar model on Maxim's website, the DS3232M, which comes with 236 bytes of SRAM. The DS3231 seems to be a ...
0
votes
1answer
33 views

NOOBS Crashes “Creating Filesystem(FAT)”

I am using a Raspberry Pi Zero with NOOBS downloaded onto the SD Card. It succssfully boots, and asks me to pick an OS. I pick Raspbian and press install, and the install will go ahead for about 2 ...
0
votes
0answers
40 views

The AM2302 Temp/Humidity Sensor return none value in Raspberry Pi 3 B+

I am using the AM2302 Temp/Humidity Sensor. I start with sudo apt-get update && sudo apt-get -y install git python-dev git clone https://github.com/adafruit/Adafruit_Python_DHT.git cd ...
0
votes
1answer
33 views

Wiring on RPI3 when connecting two peripherals - microcontrollers simultaneously

I am currently having an ADC(MCP3008) connected to a rpi3, using the following wiring map, in order to read data from analog sensors. MCP3008 -> RPI3 VDD -> 3.3V VREF -> 3.3V ...
1
vote
2answers
36 views

Some programs does not work with a newly created user using useradd

So I used the old useradd command to create a new user on Raspbian Stretch. I copied the .config directory and other dotfiles from the 'pi' user, and started using the new account. However I can't get ...
0
votes
1answer
62 views

prevent script running twice consecutively - Python

I have the following two Python scripts one sends a motor forward while the other script sends it backwards. Each script is operated by it's own button on a remote. Script A import RPi.GPIO as GPIO ...
0
votes
1answer
14 views

Writing two different hex values to linked shift registers

I'm new to raspberry pi and electronics, and I'm working on improving my first (meaning my design, no tutorials) project. My original project was two seven-segment displays linked to two shift ...
0
votes
0answers
9 views

TDOA Estimate and Plotting results on Matlibplot

I edited the following code in order to the estimate location of sound source(drone) using four stereo microphones. The microphones are connected to Rpi 3 through a stereo to usb converter (HF0200C). ...
1
vote
0answers
22 views

Raspberry Pi Version 1 B (512 MB) - Using JTAG

I want to use an FT2232H Mini Board as Raspberry Pi JTAG (based on https://github.com/dwelch67/raspberrypi/tree/master/armjtag). I use a raspberry pi B version 1 (this one with the 26-pin connector ...
0
votes
1answer
18 views

wlan and eth disabled at the same time

I'm using 3B+ and there is something wierd. My pi connects to my router via wifi and cable at the same time without a problem. I can both ssh to the wlan ip and the eth ip address. However, when I ...
0
votes
0answers
28 views

How to fix apachie server 403 forbidden error

I'm using an Apache server on an original pi b and when I change the website folder(to stop the web interface of pi-hole clashing) it shows this: Forbidden You don't have permission to access /index....
1
vote
3answers
76 views

Raspberry Pi 3b+ not booting

I got a raspberry pi 3 b+ for Christmas and yesterday whilst installing a Pi Hat's Software (Rasp.io Duino) it just flat out died after showing that there was an under-voltage, even though I was using ...
1
vote
0answers
90 views

Raspbian Samba/Fstab file limitation

I'm connecting a HDD to the pi to share in my network. I setup SAMBA as directed, install ntfs-3g (my HDD is NTFS), then set specific UUID in /etc/fstab to the mountpoint located on my pi: UUID=...
-1
votes
2answers
13 views

After reboot: Model 3 B+ shows up as client in router interface, but not responding to pings and has no internet connectivity

Very odd problem here. I have Model 3 B+ running Pi-hole and dnscrypt-proxy. Everything was working just fine until this evening when it lost power for an extended period of time. Since powering it ...
-3
votes
1answer
43 views

I want to connect raspberry pi and alexa in order to control my Samsung tv

i have amazon alexa and i cant control my Samsung tv model UE50KU6000W. Somewhere i can't recall i think that i read that you can do it if you use raspberry pi. So is that true? and if so how can i ...
1
vote
1answer
13 views

How to install noobs after trying to install rasbian with pre-configured noobs

I just bought an Raspberry Pi Zero unit that came with Vilros utils. I get within the package a 16gb SD-Card that was pre installed with NOOBS. When I received the package, I looked inside the SD-...
0
votes
1answer
30 views

How to start Raspberry Pi User's Desktop on default display remotely? (ssh)

My Raspberry Pi currently boots to the desktop login screen, and I would like to keep it that way. However I would also like to be able to login to a user's (like pi) desktop using something like ssh ...
0
votes
1answer
21 views

Best way to stream footage

I'm looking for the simplest possible way to stream footage from my raspberry pi camera to my computer using a python program. I will also be using this on multiple networks so if there's an easy way ...
-4
votes
0answers
33 views

I need help coding a toggle button for led? [duplicate]

I have hooked up my circuit and it works as a hold button to turn light on. Then when I let go of button light turns off but I have found no way to make a toggle button for led. If somebody were so ...
0
votes
1answer
61 views

trying to run 6 USB cameras simultaneously on a single Raspberry Pi 3B+ with add-on 4 port USB hub with external power

We are trying to simultaneously run 6 cameras on a Raspberry Pi 3B+ with an add-on 4 port USB hub that has an external power supply. The cameras are set at 15 FPS with a colour image size of 640 X 480....
0
votes
0answers
24 views

Raspberry Pi Green LED Always On

I was not able to find out why this error happens (repeatedly), please help me diagnose it. I have a Raspberry Pi 3 Model B, running Raspbian Stretch Lite (2018-11-13). It boots successfully. I can ...
1
vote
1answer
27 views

Turn Raspberry pi stand alone network on and off

I have seen the tutorials for creating a stand alone network on raspberry pi like the one on The Raspberry Pi site and the nice tutorial in this previously asked question but what is not clear to me ...
0
votes
0answers
14 views

Pi zero as bluetooth keyboard?

I am attempting to use a Pi as a bluetooth keyboard. There are several guides I have found for this, such as this on from impythonist. However, they seem to be outdated, and so far as I can tell ...
0
votes
1answer
31 views

Raspberry pi and HP f24 monitor problem

Lady and Gents, i have HP 24f monitor. I connect RPi using HDMI. But it does not show continuesly. From time to time it only appears for 1 second and then disapear. Some times very often, then ...
1
vote
0answers
45 views

Calling a program from /etc/rc.local

I have a simple script that adjusts the monitor's brightness that is set to run on startup. #!/bin/bash gpio -g 18 1024 gpio -g mode pwm gpio pwmc 1000 gpio -g 18 800 I am calling this script from /...
0
votes
0answers
11 views

CPU peaks at regular intervals on w1_bus_master1

I've recently changed my hardware from RPI2 (boot from flash card, Raspbian 8 Jessie) to RPI3 (boot from usb->ssd, Raspbian 9 Stretch), cabling and sensors are the same. On the new RPI when I do "top"...
0
votes
0answers
25 views

What will be the output when “ifconfig” command is entered after running the 6lbr, installed on RPi?

im having some issues with accessing the 6lbr web server page. I just need to know what is the output you get once you checked your interfaces by entering "ifconfig". In mine, I just get only the ...
0
votes
1answer
54 views

How to upgrade raspbian stretch to latest release version

I have a raspbian stretch image which is of release date 2018-03-13. Is there any command I can use to upgrade it to the latest release os image of raspbian. I tried with apt dist-upgrade but the ...
0
votes
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
votes
2answers
69 views

Routing issue - use vpn gateway router

Dear Raspberry community, I am using a raspberry with newest stretch version and facing a routing issue. My network: LAN: 192.168.178.0/24 Subnet mask 255.255.255.0 Default eth0 Gateway 192.168.178....
0
votes
1answer
32 views

Raspberry Pi OTP and booting from USB

I was reading this article about booting the Pi from USB It mentions that the Raspberry Pi 3 requires the USB boot bit to be set in the OTP (one-time programmmble) memory. ... Once ...
1
vote
1answer
23 views

Rasberry with MPU6050 detects strange peaks in acceleration and gyroscope measurements

I am setting up the MPU 6050 with Raspberry 3b + for measuring acceleration and gyroscope. I made some tests with the sensor MPU 6050 at rest (just on the table, without motion). The measurements ...
0
votes
0answers
19 views

Cannot install install tensor flow on raspberry pi 3b

i am running into an error when i try to install tensor flow using pip on my raspberry pi 3b+. here is the error message: Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/...
0
votes
0answers
13 views

Is it possible to install a graphical python script as a desktop/panel widget?

I have written a simple Python program in Tkinter with a Scale which I can use to control the screen brightness. Is there a way to install this as a part of the panel and use it from there like all ...
0
votes
1answer
15 views

Raspberry PI UART doesn't work all the time

I am trying to communicate to a UART device using Raspberry Pi (Raspberry Pi 3B with Raspbian stretch) Header pins with pyserial. I have followed all the steps mentioned in https://www.raspberrypi.org/...
0
votes
2answers
53 views

How to make a button toggle a led?

I have some code which turns an led on when I hold the button. But only when I am pressing it. Could somebody help me so when I press the button then the light stays on and if I press it again the led ...
0
votes
1answer
21 views

Raspberry pi on TV for gaming [on hold]

I am looking forward to buy a rasberry pi but I am confused can it do the following things I want. Can I use it as an Android for making my TV smart. ( I have HDMI in my TV. It's a led tv 3 years old ...
0
votes
0answers
16 views

Pi3 won't boot Assertion 'str' failed at ../src/basic/utf8.c:195

I have an raspberry pI 3 that won't boot. The problem is probably the sd card since it works when I switch to another sd. During the boot screen the PI give me "Assertion 'str' failed at ../src/...
0
votes
0answers
17 views

Generating multiple square waves simultaneously

I'm trying to generate 2 simultaneous square waves (50% duty cycle PWM signals) to step two stepper motors (STEP signal to separate motor drivers) on the Raspberry Pi Zero W. I use GPIO12 and GPIO19, ...
-6
votes
1answer
28 views

Transistor Count vs Bit Count [closed]

When looking at the history of microprocessors I see that there is not a consistency with the bit count and transistor count of the microprocessors. For instance the first Intel 4004 was a 4 bit chip, ...
1
vote
1answer
50 views

How can I find the answer to “What does Raspbian use to handle audio?”

I think some releases of Raspbian handle audio differently than the previous version. If the use of ALSA or Pulse Audio (or some other software) has changed with Raspbian releases, what do I need to ...
0
votes
0answers
25 views

RPi 3B+ won't discover PC on bluetooth

I am trying to connect my Windows 10 PC and RPi via Bluetooth, but my RPi doesn't show my PC as an available device. My PC also does not show my RPi as available. It is weird because my phone can ...
0
votes
2answers
32 views

Weird resolution

So, im new to the raspberry pi. When i first started it and installed the raspian os with noobs, it had fine resolution. But then i rebooted, and for some reason the noobs menu was in alright ...
0
votes
1answer
31 views

Setting a mode to a pin requires root permissions

I’m trying to change pin mode on RPI (with Raspbian) – it works when I invoke those commands sudo chown root.gpio /dev/gpiomem sudo chmod g+rw /dev/gpiomem but after every restart I have to execute ...
0
votes
1answer
20 views

Need help blinking a led continuously?

I'm new to Python and just go this Raspberry Pi, and need help blinking this led. I have got it to where the LED will blink once( Turn on for a second, then turn off). I need some help so when I hit ...
0
votes
0answers
21 views

GUI lag using Tkinter to update a dynamic label counter [on hold]

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 ...
0
votes
1answer
29 views

Ripped off display connector, raspberry not working anymore?

i am using a Raspi 3b v1.2. I ripped parts of my display connector off by accident and then removed the whole thing with pliers, because i will never use it anyways. Now my raspberry won't boot. Is a ...
2
votes
1answer
45 views

Error in apt-get update

Whenever I run "sudo apt-get update" I get pi@raspberrypi:~ $ sudo apt-get update Hit:1 http://archive.raspberrypi.org/debian stretch InRelease Hit:2 http://raspbian.raspberrypi.org/raspbian stretch ...
0
votes
0answers
24 views

Drink dispensing machine using Android Things

I'm building a liquid dispensing/vending machine. Here are the features it'll have: The machine will have a big touchscreen and user can interact with it and select her options. It should also have a ...

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