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Questions tagged [pi-3]

For questions that apply specifically to the Raspberry Pi Model 3 and not other/all models.

0
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1answer
11 views

Couldn't get Composite Video Output on Raspberry Pi 3B

I am trying to get composite video output from my raspberry pi to feed into my old CRT TV. I tried multiple times but without success. I bought an 4 pole 3.5mm RCA cable which was not according to the ...
0
votes
0answers
6 views

Catching Printer Errors in CUPS

Hello RaspberryCommunity, Well I am new to raspberry pi, and I would like to ask if how can we[b] catch error in the printer.[/b] Like paper jam or no paper available in the printer. I am now ...
0
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0answers
12 views

Interrupt in Raspberry pi using MATLAB Programming toolbox for RPi

Is there a way to use the external interrupt feature of Raspberry Pi using MATLAB? The MATLAB only supports read and write to I/O's. I am using Raspberry Pi model 3 B. I am trying to execute a routine ...
-5
votes
1answer
36 views

Issues with PI and faster VC4 alternatives

I am aware that there has been alot of questions about using dedicated Nvidia or AMD GPUs with the Pi (I have asked a few of them). But ARM (mali core ) and Vivante among other companies appear to ...
0
votes
1answer
22 views

OSError: [Errno 121] Remote I/O error or pigpio.error: 'I2C read failed' on MPU6050

So I use MPU6050 to get acceleration from stepper motor linear rail movement(steper motor working in thread, I use pigpio for the motor) by make the MPU6050 can work on threading and it can show data ...
0
votes
1answer
21 views

run vlc in command line

So I have a Raspberry Pi 3+ running OctoPrint. I also have an HDMI IP camera attached to my 3D printer. Because the stream for the camera is not compatible, I have another server running the VLC ...
3
votes
1answer
22 views

What are the functions of the test pads on the Pi 3B/3B+?

The various models of the Raspberry Pi comprise numerous test pads (testing pins). Many of these pads however are not mentioned or properly labelled in the official reduced schematics the Raspberry Pi ...
0
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3answers
47 views

Relay board failing when connected to RPi3 5V pins

I'm using my pi to power several relays. A total of ~20 relays (a 8-relay board and three 4-relay boards) I'm also running home-assistant Yesterday i noticed that when i try to power them all up, ...
2
votes
1answer
26 views

ntp doesn't work in raspberry pi

the problem is my raspberry pi 3 doesn't show the correct date and time.i edit this file: sudo nano /etc/ntp.conf with correct server addresses and i try this commands : sudo /etc/init.d/ntp stop ...
2
votes
0answers
15 views

ADXL345. Bits, resolution and g's

I have a Kistler type 8921 which produces 1g (10m/s2) RMS (at 159 Hz). The ADXL345/Raspberry Pi 3 setup should produce similar g's, but currently doesn't. As can be seen, it is not just about a ...
-1
votes
1answer
19 views

Raspberry pi with Yocto os sd card is not working with Raspbian os sd card

Few months ago,I built an custom image for Raspberrypi using Yocto Project,flashed it in a sd card and was able to boot raspberrypi.Presently,I am trying to use a different sd card with raspbian os ...
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0answers
25 views

time involved to make raspberry pi hardware [closed]

Blockquote wishing to know how long the pi motherboard hardware takes to create** strong text **
1
vote
1answer
36 views

same GPIO input signal on multiple raspberri's from one source

Im having 7 raspberri pi's 3 connected to 7 screens, running an python 2.7 app to download different images from google drive, every raspberry has different images. Geeqie is displaying those images ...
1
vote
1answer
38 views

Is it possible to run RDP on Pi3 running Win 10 IoT?

Has anyone been successful in running some sort of Remote Desktop session from a PC to a RaspBerry Pi 3 running Windows 10 IoT?
0
votes
1answer
20 views

Make Raspberry Pi to work as AP and Station to receive wireless temperature sensor values

Hi after reading the manual of Xbee device, I am able to use XBee device with raspberry pi. But how to make raspberry pi to work as an access point as well as the station at the same time? using ...
0
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0answers
12 views

Bluetooth Xbox One Input Raspberry Pi

I'm trying to build a robot using a Raspberry Pi 3, and I would like to control it using a Bluetooth Xbox One controller. I am able to get the controller connected to my pi. I've verified this by ...
1
vote
0answers
24 views

Help - Incorrect reading of magnetic encoder

I am a beginner having trouble to read a magnetic encoder. I have found the following code I found that I am using in order to read the encoder values: #!/usr/bin/env python import pigpio class ...
-1
votes
0answers
19 views

How do I link my gesture recognition system wirelessly with an IP Camera? [on hold]

I am currently building a hand gesture recognition system using gloves equipped with flex sensors. Along side that,I am also building an image recognition system that recognises hand gestures using ...
0
votes
1answer
54 views

RPI 3B wlan0 wifi adapter broken?

My raspberry pi 3b (running jessie) fails to connect to wifi. It can scan the networks, and finds all nearby wifi SSIDs. When i try to connect and enter the password, nothing happens (credentials are ...
0
votes
0answers
36 views

Graphic user interface for scientific purposes

I’m starting a project to upgrade a laboratory machine. The objective is to read the signals of sensors, visualize the data (in real time if possible) and store it if that is desired. I have been ...
1
vote
2answers
38 views

wpa_supplicant.conf in raspberry pi 3

In order to have my raspberry pi access using ssh (on wifi) i Created a wpa_supplicant.conf file with necessary details Created an empty file 'ssh' My question was around security. Is it secure to ...
0
votes
1answer
28 views

sd card for secondary storage in I/O board using raspberry pi compute module 3

I have an I/O board with me using raspberry pi compute module 3. It has an sd card slot which is to be used for secondary storage. Can someone please help me and tell me how to access the sd card and ...
0
votes
1answer
41 views

What is machine id in Pi. Can we update it to some other id.?

I have burned Raspbian stretch os image in the card and have installed all the software I need in pi. I have then cloned this same image into other raspberry pi devices which I have and thus all 5 Pi ...
0
votes
1answer
29 views

Avoid overvoltage

I have a battery, that supplies 7.5V but the raspberry pi 3 can only handle up to 5V in the micro usb input. What would be the easiest way to handle this? I have a plus and a minus cable and no real ...
0
votes
0answers
11 views

suddently raspbery pi shutdown or random long delay when running stepper motor using pigpiod

So I create an another program that can run stepper motor nema 34 using leadshine DM860 driver and this is the example of my code: import time import pigpio START_DELAY=580 FINAL_DELAY=480 STEP=1 ...
0
votes
1answer
41 views

Unable to ping all PCs inside company network

I am using RPI3 with raspbian and I have it connected to my personnal network via wifi (works fine) but I also connected it to company network with cable. Also I am new to RPi and Linux. So I have ...
-1
votes
0answers
43 views

Raspbian - “sudo apt-get update” error

I'm new to the Raspberry Pi and I bought the Raspberry Pi 3 b+. when I try to run sudo apt-get update it always gives the error: Err:1 http://raspbian.raspberrypi.org/raspbian stretch InRelease ...
0
votes
2answers
32 views

AttributeError: 'NoneType' object has no attribute 'send' pigpiod

So I create an another program that can run stepper motor clockwise and counter clockwise with a ramp up and ramp down in there and adding limiter switch on GPIO 16 and 26 to stop the pi....
0
votes
0answers
24 views

About Raspberry Pi Power and Self powered USB hub device

I'm a beginner at IT and also at Raspberry Pi. Recently I just set up my Pi with 5V/ 2.5A Power Supply. I'm now using my Pi with: 1. Case with a 5V fan. 2. Mouse. 3. Keyboard. 4. ...
0
votes
1answer
25 views

How to remove the transparency of the terminal background?

I have set up my Raspberry Pi 3, but the terminal has a completely transparent background. This means I can see the desktop which is very distracting. I've been trying setterm --background black but ...
2
votes
1answer
45 views

12V-to5V (3A) converter for car fuse box

I'm planning to setup a RetroPi (using Raspberry Pi 3) in my car with a direct connection to the fuse box with this 12V-to-5V (3A) converter module. The power requirements on the Raspberry calls for 5....
0
votes
1answer
28 views

Problems connecting to pi 3 via ttl (cp2102)

I'm following raspberrypi.org THE RASPBERRY PI UARTS guide, trying to connect from mac 10.13.6 High Sierra to Pi 3 using screen. I had to disable system integrity protection on mac (high sierra) to ...
0
votes
1answer
29 views

SSH over USB - possible with RPi 0 but not with RPi 3?

Although I see here and there that SSH over USB is not possible with RPi 3, it seems that SSHing over USB is possible for RPi 0. This seems weird to me. Do you (dis)confirm that SSH over USB is ...
1
vote
1answer
34 views

How to turn Pi into media centre

This is a new topic for me. I would like to connect my Pi 3 to the TV, and be able to watch shows through it. From what I've read OSMC must be installed. Is it correct that OSMC is an operating system ...
0
votes
0answers
21 views

smothing steper motor movement when chage the direction

So, I'm driving a NEMA34 bipolar stepper motor and it is being driven by a DM860 leadshine. I create a program in raspberry pi using pigpio library, the program that that make stepper motor change ...
0
votes
1answer
35 views

pigpio library serial_wave confusion

I am trying to use joan's pigpio for python to try to write a command from a rpi3 GPIO pin to a peripheral device. the peripheral device uses UART and when it receives a data packet it will then ...
0
votes
1answer
98 views

Error install scikit-learn on raspberry pi 3

I used sudo apt-get install python-numpy python-scipy python-matplotlib python-sklearn for scikit-learn installation on rPi3 but an old version was applied! This old version installed (0.18) got ...
1
vote
2answers
35 views

Use Pi 3 B as external memory

I have a 3D Printer that I monitor with my Raspberry Pi, but I would like to connect the pi via USB to the printer so I can also use it as external storage for the printer as well. Is there a way I ...
2
votes
2answers
38 views

How the fluctuation in MPC3008 ADC unused channels is explained?

I am using mpc3008 in order to convert the analogue signal of two sensors, for a rpi3. The sensors are, the SEN0189 turbidity sensor and the SEN0244 TDS sensor. The code I am using is the ...
0
votes
0answers
9 views

Configure Pi to use a certain controller as default base on emulator

I have an arcade run on raspberry pi 3 flashed with RetroPie 4.4. I have 2 Xin Mo Dual joysticks connected. I would like to connected 1 more USB input controller and use it as a default controller ...
-1
votes
0answers
29 views

How to calculate consumed energy for Raspberry Pi in Internet of Things?

I want to run some algorithm and generate data from that algorithm and transmit that data to another raspberry pi. In this process, I want to calculate energy. Like, how much energy did that pi ...
0
votes
1answer
53 views

I2C device (DS3231 RTC) not detected

I have a small DS3231 RTC module, like the following, that I am trying to get to work with my PI 3 Model B. However it is not correctly being detected by the Pi. Connected like so (ignore cables, ...
0
votes
2answers
31 views

Small pulses - DHT11 relay triger

I'd like to trigger my relay to turn on my lamp when the humidity level measured is greater than 85. Here's the code I've been using. import Adafruit_DHT import RPi.GPIO as GPIO import time sensor = ...
0
votes
1answer
52 views

Is Forticlient VPN available for Raspbian OS?

I have a Fortinet VPN server, to which I connect through FortiClient from my Windows 10 PC. Can I install FortiClient for Raspberry Pi Raspbian OS (when I do sudo apt install forticlient it does not ...
0
votes
0answers
36 views

Casting Youtube videos on TV

I followed every step of this tutorial : https://thepi.io/how-to-use-your-raspberry-pi-as-a-chromecast-alternative/ The setups were going smoothly, and I have set my SSH settings correctly. After ...
0
votes
2answers
57 views

Can I program my Pi to keep track of its own power usage?

I'm doing a university project using a raspberry pi 3 using , and I'm essentially making a time lapse camera. I have the camera module, and I've managed to take some pictures, but it would be good for ...
0
votes
0answers
24 views

How do you output audio through the GPIO pins on a Pi 3B?

I want to just be able to connect some wires from the GPIO pins to a tiny speaker. What pins do I use and how do I set it up? I've tried making a script where I set pins 12 and 13 to HIGH and tried ...
0
votes
0answers
18 views

Websocket With Seperate Webserver

I have a Raspberry Pi 3b and I have a WebSocket server up and running on my localhost after following this tutorial. I can go to localhost:8080 and control my pi using a checkbox running socket.io and ...
0
votes
1answer
22 views

requirement of running file after boot

I tried running two scripts on boot using below link. https://www.instructables.com/id/Raspberry-Pi-Launch-Python-script-on-startup/ One of the file just requires to open camera while other requires ...
0
votes
1answer
26 views

How can I attach a BTS7960 43A motor controller circuit and control it from a keyboard wirelessly through the Raspberry pi [closed]

I need to attach a BTS7960 43A motor control circuit to the Raspberry Pi. Could anyone please tell me the connections and provide me with a link to a python code to drive motors forward and reverse ...