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3 answers

Boot Zero W from USB device

The older Raspberry Pi's (Pi 1, Pi 2 and Pi Zero) couldn't boot from a USB-device, but the Raspberry Pi 3 has support for it. The Pi and Pi 2 have semi-support for it (using an SD-card with a single bootfile). The Pi Zero W is a remake of their…
Max
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SD Card Showing as 30 MB on a 32 GB Card. Can't Format, Can't create a partition table

A couple of days ago I received a new 32 GB SD card from Sandisk. Upon arrival, I flashed the Retropie 4.1 image for the Pi Zero onto it. I then put the card into my Pi, and plugged it in. Nothing. It would not boot. I then took it out, and plugged…
thatoneguy245
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Using Pi 3 for wireless display/miracast

I would like to connect my Pi 3 to a ceiling mounted projector, and send display content to it wirelessly from a Windows PC. Using something like Miracast. I have found Piracast on github, but that is only for Pi 2, with a specific dongle. Is there…
LC1983
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Are there any expansion boards available for the GPIO?

Are there any expansion boards available for the Raspberry Pi for use with the GPIO?
FarhadA
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Can't access shared libraries when running with sudo

I'm trying to get a demo working writing PCM to the I2S; I've created a small demo program that gives an error when I run with the following command ./demo stereo_small.wav can't open /dev/mem So I run with the this command sudo ./demo…
Dog Ears
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4 answers

Disable sudo for user Pi (or require root password)

I'm pulling my hair out over this thing. Using Raspberian here. So I'm trying to restrict the Pi user from being able to use sudo without the root password. After heavy searching, I gave up on that, and now I'm trying to just disable all access to…
daviddavidson
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Implement a GPIO function with a callback calling a asyncio method

I am testing a sensor attached to the GPIO in raspberry using python 3.5. The idea is something similar to this link. My code is: gpio.add_event_detect(4, gpio.RISING, callback=lambda x: self.motion_sensor(message_manager_f), bouncetime=500) def…
King Midas
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What's the right way to run a python script as a daemon (service) in raspbian (or debian)?

I'd like to use my Pi as a home thermostat, with the control loop running in a python script. I want to run it as a daemon on raspbian (debian) at startup. There's an example bash script in /etc/init.d/skeleton, but it seems unpythonic to mash bash…
hobs
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SSH over Bluetooth with iOS

Is it possible to connect to a Pi3, over Bluetooth for SSH, for iOS? I know you can connect to it with BlueZ, and SSH is possible over wifi, but I can't find anything about doing both. The advantage would be to do it in an area without wifi. Maybe…
D. Clayton
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Objective C enviroment

Do any of the standard distributions come with an Objective C environment? Is there anywhere to get prebuilt Objective-C compiler and libraries? I would prefer an answer which is based on Clang/LLVM but will settle for something based on gcc.
Maria Zverina
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HTTP Live Streaming

I current have a setup using Motion to stream video from a webcam attached to a raspberry pi. Unfortunately this is quite low quality and has a poor frame rate. I am looking into using HTTP Live Streaming, but details about this a vague at best…
Eddie
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Game platforms emulators on Xbmc/Openelec

Is it possible to run emulators on Xbmc/Openelec? I am familiar with an addon "Rom Collection Browser" and as my understanding of this plugin is that it can launch various games with different emulators. However I haven't managed to do anything…
Merstzik
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How can I build MongoDB?

It seems to me like there's currently two way to go about this: https://github.com/skrabban/mongo-nonx86 https://github.com/RickP/mongopi I settled for the mongo-nonx86 fork. I installed the dependencies as described in Install Mongodb in…
Oliver Salzburg
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Raspberry Pi 3: microSD card vs hard drive

In my bachelor's thesis I compared the speed performance of a hard drive connected via USB adapter with a microSD card. I was challenged to answer the question "Why is the difference in speed drives and memory cards especially noticeable in longer…
sunny
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RPi as a Sound Level Meter?

For my daughter's science fair project (Computer Science and Math category), she'd like to use the RPi to go around and measure whether different loud sounds are above the threshold of pain and are damaging our ears. She's a 6th grader, but she has…
user5769
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