Raspberry Pi Stack Exchange
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1500 questions
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4 answers

Wiring RGB LED's

I was wondering if it is possible to connect 8 individual RGB led's much like the adafruit strip. I saw the Pumpkin Pi project and would like to build one. I don't have any yellow or red LED's, but have a small stockpile of the RGB's. I know for…
atrueresistance
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building kernel image (.img) including ramdisk

I have built my Linux kernel (3.0.1) for my Raspberry Pi with these following steps: 1. Downloading kernel source 2. tar xvf source.tar.bz2 3. downloading arm cross compilation tool. 4. tar xvf…
Shantanu Banerjee
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Is it possible to control a SRAM module via the GPIO pins?

I would like to attach a SRAM module to the RasPi. My idea is to store sensitive (encrypted) data on the SD card but keep the key on a SRAM module. It would have its own backup battery (or supercapacitor) and an anti-tamper switch that would erase…
finnw
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Why is my Webcam image all black?

When I use fswebcam to capture a JPEG image from my webcam (an HP 2100) that is USB attached, it is always black?
Kolban
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Is there a 802.11ac dongle with drivers ready for the raspberry pi?

I understand the USB2 bus will limit the speed gain from the 802.11ac network interface. I still would rather buy a 802.11ac usb dongle as its primary use will not be with the raspberry pi. Is there a usb 802.11 ac dongle on the market with drivers…
Coyote
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14
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4 answers

Change/reset password WITHOUT monitor/keyboard

I forgot the password to my Pi, but don't have access to a compatible monitor/keyboard. I've seen methods like these but they all involve editing cmdline.txt and then booting with a monitor and keyboard attached to run passwd pi from the main…
Luke Moll
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Force Minecraft-pi to use PiTFT, not HDMI

My daughter just got the PiTFT for her Raspberry Pi, and I finally picked up myself a Pi(B+, woo woo)+touchscreen as well. Given that she's in second grade and I think every other kid in school plays Minecraft, she was extremely excited when she…
Wayne Werner
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Install Arch Linux from osx

I recently downloaded archlinux, but as embarrassing as it is I simply don't think I am installing it correctly. When I do my version of the install and hook it up to the Raspberry Pi, the screen remains black. I have never installed a .tar.gz to a…
user20088
14
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2 answers

What do I need to simulate traffic lights using LEDs?

So I'm making a model that simulates traffic lights (Red, Amber, Green) so there will be three LEDS that need to be preferably extendable (I don't want them attached directly to the breadboard) but I don't even know where to start (Ok, I admit I am…
Phorce
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1 answer

Powered USB hub powering the Pi through USB sockets (not microusb)

I bought a powered USB hub from Maplin, just something cheap, but the guy assured me that it would work fine. Anyway, plugging it into the raspberry pi (with the microusb power lead out of the rPi) powers on the rPi. Will this cause any damage to…
Thomas Clayson
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14
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Is there a collection of teaching materials?

Is there anywhere that I can find a collection of teaching materials for the Raspberry Pi? I would hope this could include details such as: Flashing the SD card. Installing the basic OS. Programming the GPIO. Software recommendations for teaching…
Jivings
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Is it possible to use the GPIO to program a PIC?

I'm referring to the PIC microcontrollers, specifically the 16f and 18f series - could the GPIO be used in this way? If so, how?
berry120
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Can I provide separate power to USB device?

I have a USB device that requires more power than the RPi can provide. I don't want to use a powered hub. Couldn't I build a simple adapter that passes only the data lines and breaks out Vcc and ground to the device (no connection to RPi) such that…
CPRitter
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OpenCL w/ Broadcom GPU?

I know this question has been asked and answered before here: Can I use the GPU for calculations? but there have been a number of developments recently, including a hint that there will be more forthcoming. Does anyone know if this is likely in the…
cjm2671
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Force Raspberry to get internet from specific network

I configured my RPi to connect to a 3G dongle on boot by setting ppp and wvdial on /etc/network/interfaces The Pi boots up and I have internet connection. Perfect. Now my problem is that whenever I connect the Pi to my computer via ethernet (using…
jonathanwiesel
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