Questions tagged [pi-3]

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

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48
votes
4answers
230k views

How do I make serial work on the Raspberry Pi3 (or later model)

My Pi3 serial console produces rubbish and fails to respond to the keyboard.
5
votes
1answer
9k views

Raspberry Pi WiFi to Ethernet Bridge for a server?

I wanted to create a Wifi to Ethernet Bridge on my Raspberry Pi, similar to this one. The problem is: I want to conntect a Network Harddrive (WD MyCloud) to the ethernet side. The Harddrive seems to ...
2
votes
1answer
3k views

Rpi3 LIRC Library and UART IR Transceiver Setup Problem

I installed the lirc library and I tried to use it, I need this for a project sudo mode2 -d/dev/lirc0 Using driver default on device /dev/lirc0 Trying device: /dev/lirc0 Please use the --raw option ...
8
votes
2answers
7k views

How many serial ports are on the Pi 3?

How many serial ports are on the Pi 3? There is one on the GPIO pin that goes to ttyS0. Is there a separate one for USB? I have read somewhere about /dev/ttyUSB0. Is that a separate serial port? ...
4
votes
1answer
4k views

How to use Arduino devices with Raspberry Pi?

I bought "RFID RC522" & "GY-NEO6MV2", and I need a useful guide for both of them in order to use them with Raspberry Pi 3 Model B. I also want to know if there is a guide or a course for using ...
7
votes
2answers
19k views

Raspberry Pi 3 model B “dtoverlay=gpio-shutdown”

To my /boot/config.txt on Raspberry Pi Model B I added: dtoverlay=gpio-shutdown,gpio_pin=3,active_low=1,gpio_pull=up Right now nothing happens when i shorten GPIO#3 with ground. What else needs to ...
4
votes
1answer
877 views

How to use Rpi python to control PCM1802 24-bit HiFi stereo ADC and MAX4466 microphone amplifier

I want to get Analog Audio Input using a PCM1802 ADC Module and MAX4466 microphone module using python. It is actually a project for a very basic and introductory course about Arduino and AVR assembly ...
142
votes
11answers
363k views

Disable WiFi (wlan0) on Pi 3

Got a Pi 3 which will always use ethernet, so trying to figure out how to disable the WiFi such that it does not even turn on after a reboot. If I do an ifconfig I see the wlan0 device. I can do ...
33
votes
7answers
26k views

Which model Raspberry Pi I am running?

Is there a way of determining whether the current Raspberry Pi is either a 2 Model B and 3 with Raspbian Jessie Lite 8.0? This is because I have a particular bootstrap.sh written in Bash where it ...
4
votes
3answers
12k views

raspberry pi as access point with captive portal

I recently got a raspberry pi. I have it set up as an access point in a standalone network (not connected to the internet). I can also serve a static website on this network. I've been trying to set ...
1
vote
2answers
2k views

How can Rpi move a Servo motor using a GPIO pin in PWM mode?

iam new to raspberry pi and i got an error while a running servo motor in my object detection script i need to run the servo whenever my if condition is true so the same pin run multiple times if ...
2
votes
2answers
521 views

How can Rpi read ADS1256's negative values?

I'm using this Raspberry Pi High-Precision AD/DA Expansion Board from waveshare. I have some questions regarding its ADC (model name: ADS1256) unable to give out negative value. Specifically, only ...
48
votes
2answers
114k views

Raspberry Pi 3 vs Pi 2 power consumption and heat dissipation

I've seen the announcement of the new Raspberry 3 but didn't find any info regarding power consumption and heating. A 1.2 Ghz 64-bit CPU is great but does it draw a lot more power? Shall heat be an ...
4
votes
3answers
3k views

Switch between wifi client and access point without reboot

I want my Raspberry Pi to be used as access point or as client connected to my internet router but not both together. So I want to switch between these two modes with one simple command without ...
4
votes
2answers
2k views

How to set up dashboard for monitoring PI processes

I have PIs that use a schedule to play videos on loop. The PIs also use a daemon file 'surround.sh' to control the video player, and the daemon script allows the user to check the service status of ...
17
votes
2answers
36k views

Connect to Raspberry PI 3 over Wi-Fi direct

I want to connect from an android phone to a RPI 3 over Wi-Fi direct. I want to do it over Wi-Fi direct because the RPI will be a controller for one or more movable devices that will be used in ...
26
votes
3answers
124k views

Raspberry Pi 3 audio input?

Did Raspberry Pi 3 add audio input? I'm new to RPi and interested in doing speech recognition but noticed input has been missing for previous versions. If it hasn't, what is the best way for me to go ...
13
votes
3answers
48k views

How do I start up in safemode?

After attempting setting up Raspberry Pi bluetooth to be bluetooth receiver for stereo, now whenever I start it up I can't SSH at all, I can't use the desktop at all or CTRL+ALT+Fnumber key to get to ...
16
votes
2answers
24k views

Raspberry PI 3 MODEL B - Wireless Bridge to ethernet

I've seen a lot online for a solution to make raspberry Pi 3 into a wireless bridge. But many are old articles to suit the Pi 1 and 2. This is the last article I have seen, and tried: http://blog....
4
votes
2answers
5k views

Portable power supply for RPI3 and official touchscreen requirements

I have recently bought and assembled a Raspberry PI 3, official touchscreen and case / enclosure. I want to be able to use it whilst out and about with a rechargeable battery and if possible allow ...
2
votes
1answer
2k views

Active Piezo Buzzer Makes Sound On Both Rpi GPIO Low and High Level Signal

Goal: I want to replace a status-LED with a status-buzzer I use the same code which worked with the status-LED: (1) on start set buzzer to LOW (2) wait some time, than "blink" once (HIGH 200 ms then ...
6
votes
4answers
8k views

How can I control the red LED again

I just acquired the latest Pi-3. In the Pi B+ and Pi 2 it was possible to access both the red and green LED through /sys/class/leds/led0 and /sys/class/leds/led1. After setting up the Pi 3, I have ...
2
votes
1answer
404 views

how can I get a fixed sampling rate of 1 ksps when interfacing MCP3008 (10 bit ADC) with raspberry pi using SPI?

Whenever I take data from the MCP3008, my sample rate keeps changing. Sometimes it's 24ksps, sometimes 200sps. I want to keep this fixed. Python Code for SPI communication on raspberry pi: import ...
15
votes
9answers
36k views

How to enable Wi-Fi channel 12 on Raspberry Pi 3?

I need my RPi 3 to connect to a Wi-Fi network using channel 12, but I'm not able to get the built-in Wi-Fi adapter to use this channel. This is what I've done: $ sudo apt-get install wireless-regdb ...
19
votes
2answers
97k views

Is there any limit for micro SD card size in PI3?

I have ordered Raspberry pi3. So I want what is the maximum compatible size of mirco sd card with PI3 ?
8
votes
9answers
53k views

How can I install the KUMAN 3.5 inch-display?

I have a perfectly running Raspberry Pi 3 Model B, with a Raspbian Distribution on a 16 GB SD-Card. I connected a Screen with a HDMI-to-DVI Connector to it, a Mouse and Keyboard and I also have SSH ...
3
votes
5answers
18k views

UART problems on my Pi3

I am trying to send and receive radio signals using my Raspberry, but I am already stuck at the first step :) My Radio module uses UART for communication but I have failed to set up my serial ...
5
votes
2answers
6k views

Is there a specific download for 64 bit Raspbian?

Is there a specific download for 64 bit Raspbian? Since Raspberry Pi 3 is 64 bit, but there is only one download for Raspbian available, is there a 64 bit version? Or, am I just confused and they ...
3
votes
1answer
246 views

What is the simplest way to control a number of Pi3 from a website?

Let's say I have a website and multiple pis. And I want to control my Pi from the website, for example I can reboot that X pi by just clicking on the button. Does anyone have a tool that do that ? ...
8
votes
1answer
4k views

What is the 3.5mm port standard in RPi3?

What is the 3.5mm port standard in Raspberry Pi 3? Is it CTIA or OMTP or any other standard? Mainly I want to know, which one is grounded? Say, tip ring ring sleeve = <1 2 3 4> respectively.
2
votes
3answers
749 views

Multiple Rpi Serial Ports Problem

So I am undergoing a project where I will need to add 20 UART (RX/TX) to a single raspberry Pi 3. Each device runs at 9600 After looking at the pi, I found it only has 1 UART on it. What would be ...
1
vote
1answer
1k views

Configuring Raspberry pi as Router, Wifi and Ethernet Bridge

my current configuration is as follows: I recieve Internet from the house I live in. It comes via Ethernet and has a DHCP running. The Problem is, that it is MAC-Adress limited to one device. ...
1
vote
1answer
2k views

Why is HC-SR501 PIR motion Sensor always on?

I'm trying to make an alarm system but the motion sensor is always on as soon as the script is run. I've posted a question about a different problem i was having with this project so it'll confusing ...
1
vote
1answer
20k views

Is it possible to run Roblox on a Raspberry Pi 3?

The title says it all. I know it's an ARM system, but I just want to know if I can run it. Board: Raspberry Pi 3 Model B V1.2 OS: Ubuntu Mate
0
votes
3answers
432 views

Rpi Reading MCP3008 10 bit ADC Result Problem

I want to measure some battery voltage in a range 0V-4.2V with MCP3008(VDD=VREF=3.3V). I used a voltage divider with R1=2.7MOhm and R2=8.2MOhm, but it didn't return correct value, I used resistors ...
0
votes
1answer
435 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 : ...
12
votes
6answers
30k views

Raspberry Pi Model B 3 Overclocking?

With the release of the Raspberry Pi Model B 3 today, I'm sure we're all very excited to see the speed of this new Pi. The standard clock is 1.2Ghz, but I'd like to push mine further. I know the Pi 3 ...
9
votes
3answers
18k views

Auto mount USB stick on plug-in without UUID

So, I'm making a media center. I need the Pi to auto mount ANY USB stick I plug in. No mater what filesystem (vfat,NTFS,ext). I searched everywhere, and couldn't find anything that works. Well, ...
12
votes
1answer
58k views

RasPi 3 - wlan0 not associated

I have two RasPi3, both on the newest Jessie and updated && upgraded. The problem is that both Pis can see networks but are not connecting to them. sudo iwlist wlan0 scan Gives me multiple ...
10
votes
2answers
9k views

Raspberry as an I2C SLAVE

Does anyone know how to setup a Raspberry Pi 3 as an I2C slave (in C++)? Before someone answers saying that it's not possible, it is possible. Here is a link that says it is possible (pigpio ...
7
votes
2answers
42k views

How to install OpenCV on Raspberry Pi 3 in Raspbian Jessie?

I have searched google for the process of installing OpenCV on Raspbian Jessie on Raspberry Pi 3 but have not yet found any useful help for the query. Following are the links, http://www....
5
votes
4answers
8k views

Raspberry Pi 3 Ubuntu 16.04 Server upgrade error

So last week I bought the Raspberry Pi 3 model B with the complete Canakit. I installed Ubuntu 16.04 server standard image on the micro sd card with my Windows computer. I used SF Formatter to ...
36
votes
7answers
108k views

Does Pi3 Wi-Fi support 5 GHz and does it need an extra antenna?

I was wondering if the built-in Wi-Fi supports 5 GHz networks? Will it need an external antenna to be attached to work properly?
5
votes
1answer
3k views

How to read the status of the Power-LED on Raspberry Pi 3 with Python

How to read the status of the Power-LED (or the rainbow square - if you like that better) on Raspberry Pi 3 to detect an low-voltage-condition in a python script? Since the wiring of the Power-LED has ...
2
votes
1answer
956 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 ...
4
votes
1answer
18k views

How can I easily access Windows shares from the Rpi3?

I have a Rpi3 which has been set up from 32gb NOOBS, and has VNC and XRDP installed so I run it headless via Windows Desktop Client on a Vista laptop. On the laptop I have an explicit share of the C:...
4
votes
6answers
11k views

my asoundrc is modified every reboot

I have a raspberry pi 3 with usb dac for plug my microphone and I have a usb speacker too. I installed on my pi, mopidy and other litle project. I modified my ~/.asoundsrc for pcm.!default { type ...
4
votes
2answers
4k views

Pi 3 Model B+ doesn't boot - Power Supply or broken?

I just bought a Raspberry Pi 3 Model B+. I also bought a power supply that the reseller sold specifically for the Pi - it delivers up to 3A. However, the Pi doesn't boot. I gives me the rainbow screen ...
3
votes
3answers
3k views

Raspberry Pi 3 Model B Access Point

I have followed the following tutorial to set up an wifi access point: https://frillip.com/using-your-raspberry-pi-3-as-a-wifi-access-point-with-hostapd/ https://gary-dalton.github.io/RaspberryPi-...
3
votes
3answers
2k views

Raspbian Wheezy, Raspberry Pi 3 and HC05

I now this is a long shot, but some reasons I was using Raspbian wheezy on Raspberry Pi 2, and I was able to use HC05 bluetooth module with wiringpi. Lately I had switched it to Raspberry Pi 3, yet ...

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