Questions tagged [pi-3]

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

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34 views

Folding@home on RPi 3 model B?

How to install Folding@home on RPi3 B on Raspbian, if it’s possible at all? The Folding@home download page does have 64 and 32 debian versions, but downloading them results in an error “A package ...
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20 views

Raspberry pi and ESP32

i am working on a school project and i need help with it. i have MQTT client code that will run on the ESP32.It polls the DHT-22 and publishes the sensor data to a topic called temp humidity. then i ...
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17 views

Pihole only resolves clients names on IPv4

I have setup Pihole on my Pi and evrything works except the client resolvement. Ipv4 adresses get resolved in the certain names i have set in my Router but IPv6 adresses dont get set. I have set ULA ...
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1answer
11 views

Will SDIO-mode second SD card conflict with integrated WiFi?

One is able to add a second SD card on RasPis by activating the SDIO interface. However, on the Pi 3 and Pi Zero, the integrated WiFi is connected via SDIO. Can you have both at the same time?
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1answer
54 views

My page doesn't record Data with Mysql and apache

intaxing.in/register.php or(website probably don't work) test.intaxing.in/register.php You can look here for the actual working page that did not record anything it just asks again & again for ...
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1answer
27 views

Installing the recommended software after install the desktop only version of raspian

I have installed raspbian buster without recommended software on my raspberry pi 3b+ and i am curious to see what are the recommended software. What do i have to do to install them on top of the ...
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0answers
30 views

Is it possible to control servos in both directions on the RPi?

I have been working on controlling servos in one direction with PWM control via GPIO ports on my RPi 3. I've worked with motor controllers that use PWM before and it seems that I should be able to ...
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0answers
50 views

How to run python fast on raspberry Pi

I have a python application running on Raspberry Pi. Python version: 3.7.3. The application does heavy run-time calculations and therefore runs very slow on the raspberry pi. The application uses ...
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1answer
34 views

After Power Failure, RPI now just cycles through boot sequence without booting

So some workmen were working at the house switch box which created multiple power failures for the RPI. Now it is not working. At first, it was just dead (red power LED, but nothing else) so I ...
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0answers
27 views

rasberry pi 3 says it's hot (50*C), but is cool to the touch

My raspberry pi 3 reports a [stable] temperature of 49.5 *C - which is pretty warm. However, when I touch all of the components with my finger, including the CPU, it does not feel hot or even a ...
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29 views

How to run files on Ubuntu with Raspberry Pi 3? [closed]

I'm relatively new with raspberry pi but have had experience working with ubuntu, so I decided to install ubuntu 18.04.4 on my raspberry pi 3 (using vim and python3 as well). I have a couple simple ...
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1answer
25 views

Problem with connecting my PI Samb Server to windows

Guides I used to create this: Build a Raspberry Pi NAS How to Turn a Raspberry Pi Into a NAS for Whole-Home File Sharing So currently I created a Samba server with x2 external HDDs in raid 1. I ...
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1answer
215 views

How to connect 3W 8Ω speakers to Raspberry Pi 3.5mm audio jack?

I have a pair of 3 Watt 8 Ohm speakers. https://www.amazon.in/JST-interface-Production-Raspberry-Projects/dp/B0738NLFTG My questions: I want to connect it Raspberry pi 3. How can I do that? From ...
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16 views

Black screen after boot on a raspberry Pi 3 model B

so I have been running my Pi for a few moments already and after storage time, tried to boot it and it would do everything normally, but after displaying the "welcome to raspberry Pi desktop" screen, ...
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16 views

Raspberry Pi connect to external RFID Module FDX-B/Animals

I have purchased an RFID reader which is supposed to be able to read implants that are in animals RFID https://www.ebay.com/itm/134-2K-AGV-RFID-Animal-Tag-Card-Reader-Module-TTL-FDX-B-ISO11784-85-...
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1answer
72 views

Wireguard installation

So i was following this guide: https://sigmdel.ca/michel/ha/wireguard/wireguard_02_en.html#requisites It should be pretty simple but when installing wireguard my pi says: Building initial module for ...
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2answers
64 views

How to connect to Raspberry Pi remotely using laptop to see camera output

I have just completed my project on an object tracking robot using raspberry pi and I want to be able to view my live video output remotely but I cant seem to find a way how to do it. What I ...
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1answer
23 views

Ssmtp won't work

So i'm trying to get ssmtp with mailutils running for unattended upgrades, but it won't work. I was following this guide: https://raspberry-projects.com/pi/software_utilities/email/ssmtp-to-send-...
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0answers
21 views

Raspberry Pi 3 and DLink N300 not working

I'm trying to get an additional wifi working on my raspberry pi 3. uname -a Linux raspberrypi 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux lsusb Bus 001 Device 006: ID 0bda:...
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28 views

Wireless Access Point to cellphone network

I have several remote Wifi objects (Arduino Nano with ESP8266) that connect every 6-12 hours to the internet for data transmission. I would like to create a wireless access point for these objects to ...
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4answers
38 views

Sudden delay in Raspberry while writing data to file

I am using a raspberry Pi 3b+ (Linux raspberrypi 4.19.88-v7+ #1284 SMP Wed Dec 11 13:46:41 GMT 2019 armv7l GNU/Linux) to log data obtained from an experimental setup. I read data at 1kHz and dump it ...
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0answers
30 views

Python3 Program Suddenly Given Error Messages Regarding Request Code

I have been running a python3 program that is using request and it has been running fine for the past month. Today when I rebooted my Pi Model 3B+, I am getting these errors when I restarted the ...
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1answer
26 views

connect Raspberry Pi3 with Xbee

I used Xbee s1 pro (configured as EndDvice) connected to raspberry Pi3 for getting the RSSI of another Xbee s1 pro configured as coodinator. I've the following error in first line (from xbee import ...
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0answers
34 views

Minecraft 1.13 Java edition

I have had 1.12.2 running for a while now, most servers are retiring from existence or changing to 1.13. Is there a 1.13 setup script somewhere or can someone make one for raspbian buster? I don't ...
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0answers
24 views

RPi Wireless LoRa Signal Synchronization

I have a RPI3B that I'm using with pigpio to create a waveform to transmit a square wave signal at ~200Hz over a wired connection. For each transmitter signal pulse, a GPIO pin then sends a signal at ...
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1answer
79 views

How is CPU in Raspberry Pi 4 +36% faster than for Raspberry Pi 3?

CPU benchmarks show that the Raspberry Pi 4 outperforms Raspberry Pi 3 by +36% https://www.geeks3d.com/20190930/raspberry-pi-4-vs-raspberry-pi-3-cpu-and-gpu-benchmarks/ How is this possible given the ...
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0answers
21 views

White screen after selecting something in raspi-config

I wanted to activate the camera on my RPI 3 but in raspi-config when I selected the camera just a white screen appeared. Do I just have to wait or is something wrong? UPDATE: I'm on Raspbian ...
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1answer
54 views

How can Rpi communicate with Arduino in RF (Radio Frequency)?

I need to transmit and receive data between Rpi and Arduino, in RF (Radio Frequency). I must say I have next to zero experience in this field. So any help, papers, documentation, book or manual would ...
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0answers
20 views

Why does EmulationStation block GPIO event loop?

I am working on a custom startup script for the Kintaro super kuma 9000 (link is down ATM) case for my raspberry pi 3B+ Here is the minimal example: import RPi.GPIO as GPIO import os import time ...
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0answers
14 views

Audio stopped work on Rasbian Lite after reboot

So I know there's a lot of similar posts here, but I've read everything on the first 2 pages of Google and no luck yet. There's only one command that does actually produce audio for me: /opt/vc/src/...
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1answer
68 views

network manager dbus interface calls for wireless doesnt work on raspbian

I have the following code to retrieve access points information using NetworkManager dbus api: //--------------------------------------------------------------------------------- QDBusInterface ...
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1answer
166 views

Rpi python using L298 motor driver and PCA9685 servo controller to change speed and diretion of robot car

I am unable to understand the code provided with the raspberry pi robo kit I got. I need help in understanding the code as I am new to raspberry. Thanks! #!/usr/bin/python3 # File name : ...
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1answer
36 views

Network boot Raspberry Pi 3 using a USB to ethernet adapter

I have extracted the bootcode.bin, .dat and .elf files from Raspbian and put on a SDCard. I have also compiled u-boot and put u-boot.bin on the SDcard. Now when I power on, u-boot loads fine from the ...
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0answers
46 views

Problem with DIY Smart Glasses Projection module

I am making Smart glasses which will display android app, click pictures, notifications and many more, and which is to be displayed on a small prism I searched a lot of posts online, many of then ...
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1answer
29 views

Raspberry pi connection

I am trying to connect two pis together wireless. I made both pis an access point does that affect them must one of them be a simple pi with the configurations listed or can both be AP and connect to ...
1
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1answer
48 views

Is it safe to use 3V3 on raspberry pi 3B+ to control a 3V DC motor?

I want to connect power to a 3V DC motor straight from 3v3 GPIO. Is it safe or will I brick my Pi 3B+ ?
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0answers
44 views

Getting garbage characters on RPi3 UART console, logs on HDMI are perfect

I have searched a lot on internet and tried all suggested solutions like criss-cross connection, checking loose connections, changing baud_rates and using GND connection for UART, but nothing seems to ...
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1answer
26 views

Raspberry Pi 3 DHT 22 incorrect readings

I have configured the RPi to read value from the DHT 22 sensor. I have used AdafruitDHT library but when I start AdafruitDHT.py script I got totally incorrect value e.g. "Temp=537.7* Humidity=1152.0%" ...
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1answer
48 views

Boots to Emergency Console, Unable to check boot partition filesystem

Switched to F2FS for the root partition. Upgraded from stretch to buster by doing an apt full-upgrade. Now the system goes to the emergency console because the filesystem check dependency fails. It ...
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1answer
27 views

Raspberry Pi Connecting to 8 calculator screens

First of all I want to say that I am a complete noob with hardware so sorry if this question is stupid. What I want to do: I am designing a board game, in that game I want to have a raspberry pi ...
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0answers
20 views

My raspbery Pi 3 B would not boot and when it does it freezes

I use 2 amp , 5 volt power adapter in my raspberry pi 3 2015 model and it does not boot , after leaving it for 2 days if I try then it boots up and then freezes and if i turn off the power it does not ...
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0answers
27 views

Most compatible Java on Raspbian

I have run my .jar code on Raspberry Pi 3B - Raspbian Buster with Oracle Java 8 (1.8.0_241). The code will completely run after ~80 seconds. It's read that some java versions/models (like openJdk, ...
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0answers
39 views

Interfacing non bluetooth speaker with Raspberry Pi 3

I want a wired connection between speaker and Raspberry pi 3 Model B. Bluetooth or Wireless connection is not my requirement. Regarding my speaker - it should NOT simply output buzzer sounds but is ...
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0answers
37 views

How can Rpi python read SPI ADNS3080 Optical Mouse Sensor's register values?

I am using ADNS3080 optical flow in raspberry pi 3. I set SPI connection between raspberry and ADNS3080 optical flow. I used spidev library for reading values in python. I want to read delta_x and ...
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0answers
54 views

Getting ftdi_sio ttyUSB0: failed to get modem status: -32

Iam using Raspberry pi 3b along with Xbee and Sixfab 3G/4G base sheild. getting ftdi_sio ttyUSB0: failed to get modem status: -32 usb usb1-port1: disabled by hub (EMI?), re-enabling... and also ...
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1answer
33 views

How can Rpi3 communicate with the HART GTD2000 Gas Sensor?

I have a GTD2000-Tx fixed gas sensor with an output of 4-20mA DC. How do I connect it directly to a raspberry pi 3? The power supply is 24 volts and is supplied externally.
2
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1answer
98 views

External HDD disconnects while transferring a large file 100% reproducibility

My setup is: Raspberry Pi Model 3B V1.2 No USB HUB External 3.5 inch HDD: Powered Enclosure: Sabrent USB 2.0/ESATA to 3.5 Inch IDE or SATA/SATA II Aluminum Hard Drive Enclosure Case with Cooling ...
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1answer
39 views

why raspberry pi 3 fail to read 1000 p/r rotary encoder while my 8 bit nuvoton micro controller did that properly?

I am using LS s40-6-1000ZT(H) 1000 p/r rotary encoder for my project with raspberry pi 3,but raspberry not working properly as per encoder specification(i.e not counting event properly).What could be ...
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0answers
38 views

How to use Raspbee + Raspberry pi (3 B+) + GPRS Shield(SIM7600E-H 4G HAT)

On Raspberry pi, I want to use Raspbee as zigbee controller and SIM7600E-H 4G HAT as GPRS shield for network data https://www.amazon.co.uk/Waveshare-4G-Raspberry-SIM7600E-H-Supports/dp/B07F1NSGQ8/ref=...
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0answers
22 views

Raspbian stretch locking up?

I have been running into an issue for the better part of a year where after a couple of weeks, my RPi3B+ will lock up. Using it for Nextcloud, Apache2, php7.2, etc... Locking up means apache starts ...

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