For questions that apply specifically to the Raspberry Pi Model 3 and not other/all models.
0
votes
0answers
7 views
Can the latest pi run 90hz screens and above 1080p or 2k [on hold]
Basically i want to do a diy vr headset and would like to know if the latest pi can run 90hz screens and above
1
vote
0answers
7 views
Script won't continue after command line
I am very new to Pi, Python, and this kind of programming, as a whole.
I am building a data logger. Once completed, it will be deployed in areas with no internet connectivity. So I chose to create ...
0
votes
0answers
9 views
increase ramp up stepper motor performance
so I'm driving a NEMA34 bipolar stepper motor with the following specifications:Step Angle: 1.8° Step Accuracy: 5% Holding Torque: 12Nm (1700oz.in) Rated Current/phase: 6.2A Rated voltage: 36V/48V ...
0
votes
1answer
17 views
RPI 3, how to connect built-in wifi to network A, additional usb wifi adaptor connect to network B
RPI 3, running the latest lite version. How can I configure built-in wifi(wlan0) to connect to only the wifi network A, additional usb wifi adaptor(wlan1) connect to network B only?
Any help ...
0
votes
0answers
17 views
MAX6675 - Raspberry Pi 3 B+ [on hold]
Martin from Germany here. I would like to know if you solved the problem in this thread:
Using a MAX6675 with Raspberry Pi 3 (It was 2017)
I am standing in front of this problem as well and I ...
0
votes
0answers
12 views
AttributeError: ge_add_event_data
I get this error when i try to import pynput to control my motor using keyboard:
Traceback (most recent call last):
File "/home/pi/.local/lib/python3.5/site-packages/Xlib/display.py",
line 224, in ...
1
vote
0answers
15 views
ssh working but i can't ping directly to the Raspberry pi router [duplicate]
Going through https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md i set up Raspberry pi as access point as standalone NAT with out bridging. wireless host is connected but ...
1
vote
0answers
15 views
What is the maximum clients a Raspberry Pi 3 B+ access point can handle?
I have setup a RPi 3B+ as access point using this tutorial:
https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md
I have a few dozens of RPi Zero's that connect to the AP. ...
1
vote
1answer
79 views
Wireless access point with bridged wired ethernet port and wireless client connection
I need a wireless access point that is bridged with the wired ethernet port and that is connected to another wifi internet router with a wifi client connection. All devices connected to the RasPi ...
1
vote
1answer
41 views
Raspberry PI 3 hangs on startup every other time
I have an issue with my Raspberry PI running Raspbian 9 hanging on startup - but not always. It will hang every other launch.
When the problem occurs, the launch first hangs with the last message
...
4
votes
1answer
55 views
WiFi to Ethernet bridge / Internet sharing Raspbain Stretch Lite
I have a scenario where I have a cellular Wifi hotspot modem also known as 'MiFi'.
The problem I am encountering is all the tutorials I have come across are mostly outdated or purely just don't work.
...
1
vote
0answers
22 views
Pi-3, Model B, SenseHat - How can I restart my code while it's active.?
I am new with python and PI. I have been looking all over for information about this but with no luck.
currently it works like this:
I start the program, I press the button and then it starts counting ...
1
vote
1answer
28 views
read-only filesystem after reboot..can't seem to find a straight answer hot to fix?
Im new to rasbery pi.. i would like to get my PI back to normal without having to reinstall everything!(next time ill back up or use puppet.)
I ran:
sudo fsck -n -f
i got the below:
Journal ...
1
vote
0answers
52 views
Raspberry Pi 3B WLAN Interface not found
I have a problem where my Raspberry Pi 3B (v. 1.2, official board) cannot use its onboard WLAN capability.
The onboard WiFi used to connect to the Internet without issue perhaps a year ago.
However, ...
0
votes
1answer
24 views
PI 3B wifi interface fail
My PI-3B is flashed with Ubuntu 16.04 with wireless-tools and wpa_supplicant also installed.
My issue is I can't get wlan0 to be recognised by the system either dynamically (DHCP) or statically.
I ...
0
votes
0answers
21 views
Raspberry Pi3 Python SenseHat - How can I reset my code while my Loop is running? [closed]
This is a Countdown watch. It counts down from 2 min with dots. It all works as intended my problem here is: I want to make my start button ( If pressed again ) reset the counter and make it start ...
0
votes
1answer
48 views
RPi3 Model B - no wireless interface found
i'm new at RPi. Today, i installed NOOBS and tried to turn on Wi-Fi. When i clicked network icon (next to the bluetooth icon), it written "no wireless interfaces found".
I typed to terminal "sudo ...
0
votes
0answers
16 views
How to read from register using pymodbus? [closed]
Since i am very newbie to coding and modbus communication protocol - can someone help me how to read from a register using pymodbus using raspberry pi 3
0
votes
0answers
15 views
Pi automated uploading
My upload speed is slow, Im looking for a solution send all my photos to this device so it will upload them to my fileserver so I can turn off my computer and just have the pi plugged in.
Whats the ...
0
votes
0answers
21 views
Omxplayer array [on hold]
I am attempting to run an array with mp4’s in a folder and play them at random through omxplayer. My result is the system looking for a mylist file and not entering the folder for the mp4’s. Any help ...
0
votes
1answer
34 views
Raspberry pi 3B wont boot from USB with correct OTP settings
I'm trying to boot my Raspberry Pi 3B (not 3B +) from a USB flash drive.
I've added the program_usb_boot_mode=1 line the /boot/config.txt
I've changed the right bits in the OTP and checked it:
pi@...
3
votes
1answer
58 views
Detecting electromagnetic field with Raspberry Pi
For my school project, my objective, among others, is to detect EMF changes (frequencies between ~400MHz and 2,4GHz) in a room (to simplify it even more, let's assume it's gonna be very small room/...
1
vote
1answer
52 views
Best 64 bit OS for Pi 3 without screen [closed]
So I've been running my Pi 3 with Raspbian Jessie Headless and I've run into some issues with the fact that Raspbian seems to be 32bit and MongoDB requires 64bit.
So I am looking for the best (...
1
vote
1answer
25 views
Using other GPIO pins along with LIRC
I've been trying to create a voice activated IR Remote, using LIRC and a Respeaker 4 Mic Hat. Both are working perfectly individually. However, when I uncomment the line
#dtoverlay=lirc-rpi,...
0
votes
0answers
29 views
Is there a limit on Raspberry PI's display size?
I have been using Raspberry PI 2 and 3 for the last year and a half with no problem. However, over time I have noticed that different sizes of display connected to the PI effected how my software ran. ...
0
votes
0answers
35 views
How to change TV input to raspberry pi using cec?
The question is quite simple: how can I make the Raspberry Pi the active video output on my TV using cec?
I've spent many hours now trying to find a solution, but the answer still eludes me. I've ...
1
vote
0answers
16 views
Read pin (power led) from port expander on ic2-0 at config.txt
In config.txt you can have conditional booting based on the GPIO pin level, e.g. the gpio4=1 line.
Is it also possible to access the pin on the GPIO port extender at i2c-0, or is this something ...
2
votes
0answers
26 views
Raspbian Stretch (GUI version only) does not work as OpenVPN client
I have a basic OpenVPN connection that I use with several pi's. All of these pi's use various versions of Raspbian without the GUI (the lite version). And they all work great. The same configuration ...
0
votes
0answers
11 views
Path planing and Image processing
I have a project involving image processing and path planning which i have to incorporate in a single raspberry pi. I just have to identify an object or color and then take my bot to that object or ...
0
votes
1answer
31 views
Raspberry Pi with 12V solenoid and 5V relay module
I want to connect and control a 12V door lock solenoid and am a bit unsure about the circuit. So far I've bought following components in:
Raspberry Pi 3 Model B
4x18650 Battery Holder
4x18650 (3.7V)...
0
votes
0answers
83 views
How to fix, “RuntimeError: threads can only be started once” error? [on hold]
I am making a line follower Robot using Raspberry Pi.
The robot will follow a black line and the 3RGB-LED will remain on and green I The robot will encounter an object along its path which will ...
0
votes
1answer
34 views
raspbian: unable to mount root fs on uknown block
I downloaded "raspbian stretch with desktop" .img file from the official raspbery pi website (kernel version 4.14), changed it to a .bin file so the recovery utility would recognize it, and mounted it ...
0
votes
0answers
15 views
interfacing Raspberry Pi with a mobile's(working) camera module [duplicate]
So I basically have a working android device which is wrecked physically but the camera, display and other modules are working perfectly fine. So I'm wondering if I can use the Camera module from my ...
0
votes
1answer
28 views
Why Raspbian jessie version 8 won't allow communication through GPIO serial pins?
I am running Raspbian Jessie 8 on Raspberry 3 and I followed the answer to the question Why my program won't communicate through ttyAMA0 on Raspbian(jessie)? But I still can't get my program to ...
1
vote
1answer
52 views
Swapping between wifi client and access point?
This question is an extension of the information on this post.
This question looks the same as this one but it is not. I am using systemd-networkd.
I successfully followed the instructions in the ...
0
votes
1answer
50 views
How do you control a 12V PC fan from a Raspberry Pi?
I just got an old PC fan from a computer that was taken apart at my school and I want to try and figure out how to make it turn on using the GPIO ports on a Raspberry Pi 3 Model B. It is a DC 12V fan ...
0
votes
0answers
21 views
Canon PIXMA TS 3160 with Raspberry Pi and CUPS
I have tried following the instructions outlined in a previous thread without success:
Raspberry Pi and CUPS with Canon Printers
I guess to avail of the bjnp: option highlighted in the above post, ...
0
votes
0answers
25 views
L298 driver and PI3
can anybody help me with this issue :
I have a Pi3(last model) and trying to connect 4 motors using a L298 driver. Two are in the right and 2 in the left of the driver (output 1/2 and 3/4). My pi is ...
0
votes
0answers
21 views
setup leadshine DM860 bipolar driver motor on raspberry pi [closed]
so, I want to use my leadshine DM860 bipolar driver on raspberry pi 3 and I use the guide from https://makezine.com/2014/03/19/driving-big-stepper-motors-with-arduino/ (I already try it on arduino and ...
0
votes
1answer
21 views
Remove device history wireless hotspot
I have been using Raspberry pi 3B as a wireless hotspot following this How to use your Raspberry Pi as a wireless access point. I think there is a limit to a number of devices that can be connected to ...
0
votes
0answers
40 views
Installing Recalbox via NOOBS fails with “EROR 503: Service Unavailable”
This is the second time I've tried setting up my Raspberry Pi. I'm trying to install Raspbian and Recalbox. Each time, Raspbian installs successfully and Recalbox fails with this error:
My Internet ...
1
vote
2answers
37 views
Multithreading/infinite loops affecting sensor values
I run a Python script on my RPi that manages all the sensors on the board and communicates with another machine using TCP sockets. The project gained in complexity and my script now has 5 threads ...
0
votes
0answers
32 views
C# mono - How to convert jpg image byte array and set into picturebox?
I am a newbie to mono C# programming in raspbian os (pi3 b). I have written a fingerprint scanner application in C# and using mono, I am running the same application in Raspbian os under the pi3 ...
3
votes
2answers
92 views
Tesseract OCR 4.x beta for Raspberry Pi?
I'm trying to work with text recognition on raspberry pi for a project of mine. I've installed tesseract ocr v4.0.0 beta on my Windows computer, and I'm trying to install this version as well on the ...
0
votes
0answers
37 views
Under-voltage problems when using the new PoE hat
I'm experiencing some issues with the new PoE hat when using my NETGEAR gs108pe PoE switch.
Basically when I use my raspberry pi 3B+ with only my HDMI monitor and a USB serial converter attached (...
0
votes
1answer
31 views
Using Geekworm UPS HAT while powering the raspberry pi from micro usb?
I recently ordered a Geek-worm UPS HAT Board included with a 2500mah Lithium polymer battery. Can I connect this to my raspberry pi and power it on and then provide power to the raspberry pi through ...
0
votes
0answers
41 views
Connect RunCam to raspberry pi
Just recently I got RunCam micro swift 3 (https://www.runcam.com/download/MicroSwift3-Manual.pdf) for computer vision project. However, I am struggling to understand how can I connect it to Raspberry ...
0
votes
0answers
22 views
Control coin motors for raspberry b+ 3 model
I found some info on this site projects.raspberrypi.org/en/projects/see-like-a-bat and it explains how to use a simple motor . I have conducted a test and managed to turn on a simple non-coin motor by ...
0
votes
0answers
18 views
imaging pi 3 from ubuntu 12.04 [duplicate]
I'm in the unfortunate situation of being without my laptop for a few weeks and need to build a few Pi3 computers with my old desktop running ubuntu 12.04.
Is there an imaging tool that works with ...
1
vote
1answer
44 views
Python script not running when added to crontab
I have an on_reboot.sh file that contains the following:
#!/bin/bash
source /home/pi/.profile
workon cv
cd /home/pi/reboot
python pi_test.py
After that I made the file executable using
$ chmod +x ...
