Raspberry Pi Stack Exchange
Raspberry Pi Stack Exchange

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1500 questions
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3 answers

Powering Pi from Ni-MH batteries

I would like to power my RPi2 from the 5V GPIO pin via 4 Ni-MH rechargeable batteries (4.8V) but I'm afraid about peak current. Can it somehow produce more than 2.5A? Should I use a fuse to limit that current?
Quest
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Develop a Raspberry python script from a windows

I want to develop a Raspberry python script from the windows side, for several reasons: I want to keep all the code (more) secure on my computer, in case I fry the RPi/try another project/reinstall the Pi. Also my main computer with the two screen…
J4N
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3 answers

Do I Need To Replace My Raspberry Pi Camera?

I know that there are several threads here that discuss this issue, however none of the solutions have made any difference. Anyway, when I plug in my RPi Camera into my B board, I get this error: mmal: No data received from sensor. Check all…
M2com
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How to increase the camera exposure time?

I am taking pictures in very dark environment, and I would like to obtain a brighter image. How do I increase the exposure time? I've tried the following: different exposure mode, like night, verylong, etc set the shutter speed to different…
Physicist
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11
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3 answers

Can I use the 3.3v pin instead of the 5v pin?

I am using a HC-SR04 ultrasonic sensors, and I don't have enough 5V pins on a Raspberry Pi, and I don't want to buy an expander. So is it possible to use the 3.3V pins on some of the sensors? What are the consequences? I'm a beginner, so I won't…
Stephanie
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11
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1 answer

Installing latest Chromium with version 1

I have Raspberry Pi B+ (version 1) I have been googling and trying tutorials and suggestions for 3 hours or so, and I cannot for the life me get chromium that works with the chrome web store ( I think I need version 32+ of which the default wheezy…
ParoX
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11
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2 answers

Sending Raspberry Pi Camera preview to a laptop running VNC Viewer

I currently have a raspberry pi model B with a raspberry pi camera connected to it. The raspberry pi is connected to my router via an Ethernet cable, I control the raspberry pi through VNC viewer on my laptop. The issue I have is when controlling…
Darth Vader
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8 answers

Copy Protection, Intellectual Protection and Deployment Issues

After a time with the Raspberry Pi 2 Model B v1.1., I have the following concerns: I know it is focused to enhance vulnerable educational sectors, but is it possible to sell a product, based on the RPi? To make money with it? Become zillionaire…
Brethlosze
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1 answer

How to debug without "Program received signal SIGILL" using the 3.18 kernel (3.12 works)?

I tried to debug a program with gdb in Raspbian, but all I get is: Program received signal SIGILL, Illegal instruction. 0xb6fe8acc in ?? () from /lib/ld-linux-armhf.so.3 It doesn't help to set the SIGILL handle to nostop (handle SIGILL…
someonr
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4 answers

Can I view/copy the contents of an img file from Windows?

I have a backup .img file of an old Raspbian installation that I used to have running as a webserver. I'm unable to get the Raspberry Pi to boot from it any more, I think due to running out of space on the card but I could be wrong on that. This…
Jamie Bull
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PiGPIO Library Example for Bit-Banging a UART

The PiGPIO library http://abyz.me.uk/rpi/pigpio/index.html mentions that one of it's features is "software serial links using any user gpio". I take this to mean that you can use it to generate a software UART on any 2 free GPIO pins. In the…
PhilBot
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11
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1 answer

readonly filesystem after reboot

I use ArchLinux on Raspberry Pi B+. If I reboot it using shutdown -r, I always get readonly filesystem after reboot and I have to remoung it using sudo mount -o remount,rw /. Isn't shutdown -r graceful reboot regarding to filesystems? The version is…
KernelPanic
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5 answers

How to install emacs24.4 on a Raspberry Pi Model B+?

I want the latest version of emacs to run on my raspberry pi.The raspberry pi runs raspbian and it seems that the repository only has version 23.4.1 which I can not use for it breaks the packages I use in emacs.So has anyone installed emacs24.4 on…
Ethan
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11
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14 answers

PiCamera not Working

For starting the camera I am doing >>> import picamera >>> camera = picamera.PiCamera() mmal: mmal_vc_component_enable: failed to enable compononent : ENOSPC Traceback (most recent call last): File "", line, in ... …
Coderaemon
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Is it possible to create a keyboard shortcut that acts as an on/off switch?

I just got a RaspberryPi and I'm completely new to linux and all the intricate details of programming. My issue with the RaspberryPi is the difficulty with turning it on and off. After doing some research, it seems that there are boards out there…
Kinser
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