Questions relating to the physical components that the Raspberry Pi consists of.

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0
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1answer
15 views

Raspberry Pi Camera Module distorted colours

I've been using the same camera module for a long time without realizing some colours seem to be very off. For instance black seems to turn purple or red (see picture below). Is there any settings I ...
0
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2answers
25 views

Is it possible to control a stepper-motor with javascript?

So I have seen some examples, how you can control servo-motors with javascript, but we use 2 stepper-motors for our project and these use an extra library in python. So is there a way to control them ...
0
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0answers
9 views

HDMI switching Board

Quite simply I would like to have a board, if one exists, that i can plug my TV stream (the cord that comes from my cable box) into the Pi and have an HDMI come out of the pi to the TV. Using python ...
0
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1answer
25 views

Pi2 has no red light

I have been working with my Pi2 for about a 10 days, it worked OK and I had no problem, today when I was working with a step motor driver, PI suddenly turn off and now it is not turning on. Usually ...
0
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1answer
17 views

Running a Raspberry Pi off of a Wii Balance Board

I am working on an internet connected scale. I want it to theoretically run forever without my intervention so I picked up this battery pack for my balance board. I plan on having the board constantly ...
1
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0answers
25 views

Controlling Stepper Motor Responding Strangely

I'm attempting to simply move a small stepper motor over GPIO using a Sparkfun Easy Driver. This Stepper motor is the one I'm attempting to use. I'm using similar code and configuration to that shown ...
2
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1answer
28 views

Audio amplifier hardware

We design a woorden box with a highquality speaker inside. Inside the box we have a raspberry 2, which generates music. We need about 15 Watts power for the speaker, max. We could amplify the output ...
11
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1answer
162 views

Why does the SD card random write performance for record size 8-128 kB drops below the performance of record size 4 kB?

When I check the performance of SD cards for random write, I can see the performance is quite bad for record size 4 kB (this is not surprising) but then for several cards it even drops for larger ...
1
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0answers
23 views

Problem with hardware on raspberry A+ [closed]

i have a uncomond issue... first of all, is not the hardware i guess, because, with code, i can turn on/off the leds... connecting a buttons and setting inputs is when i have a trouble... for example ...
1
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1answer
55 views

How to send data using raspberry pi's 3.5mm audio jack?

Does any one know of any projects that are doing this? Whether or not it's even possible? EDIT: I want to send the data from RPi to the device connected on other end. My primary goal is to control ...
1
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0answers
42 views

Specify interrupt in devicetree overlay

I have created a devicetree overlay to add an MRF24J40 transceiver to Raspberry Pi. The interface of the transceiver is SPI and an interrupt request. After some trouble the device finally appears in ...
0
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1answer
82 views

When will a new Raspberry Pi be released?

I know the Raspberry Pi 2 has been released very recently, but are we likely to see a new model with more features within the next year? And is it likely the Raspberry Pi Foundation will ever produce ...
6
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3answers
2k views

Are there any damaging effects to leaving the Raspberry Pi on all the time

I have a Raspberry Pi B+ hooked up to my router and I leave it on all of the time, it rarely gets switched off. Does this cause any damaging effects to the Raspberry Pi?
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2answers
25 views

File Transfer Problems

Ihave two raspberry PI's one is a B+ and the other is a model 2. My problem is this with the B+ connected I can move files from my windows computer to the PI with no trouble but when I connect the ...
1
vote
1answer
66 views

Can the Pi Emulate an HID device with via USB?

Does the Raspberry Pi model B+ have the capabilities of acting as a Human Interface Device (HID) with no extra hardware (other than a USB to USB cable)? I saw this question but it was about ...
2
votes
1answer
122 views

Can a 10 node raspberry pi cluster use a single hardrive as storage

For a school project I'm building a 10 node raspberry pi b cluster. I've done my research and know I need an sd card for every pi I use. What I'm wondering though is when I get all the pi's ...
0
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0answers
30 views

SX300 Expansion Board and SATA devices

I recently came across this 'module' and I have been wondering if it can be used to have a HDD plugged in into a raspberry. Does anyone know if an additional power supply is required in order to get ...
2
votes
1answer
54 views

Controlling servo with pi-blaster works but pi-blaster.js does not

I am able to control a servo with pi-blaster from the command line successfully. However when I try to use pi-blaster.js to do so in Node.js (either at the node command line or from within a Node ...
0
votes
1answer
63 views

Voice recognition on arduino or raspberry pi?

I am trying to do a project with voice recognition. Which platform is better for voice recognition Arduino or Raspberry Pi? And why?
2
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1answer
73 views

SPI communication with the MCP3008 in C

I am using SPI communication with between a Model B+ and an external ADC of 10 bit resolution, the MCP3008. I have wired it with accordance to the data sheet. I am also using the bcm2835 library and ...
0
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2answers
81 views

Is the Raspberry Pi suited for sensor and voice recognition project?

I am going to do a project in which the user moves his head in order to control the cursor across the computer screen using accelerometer sensor and gyroscope sensor (not combined). And for the mouse ...
0
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1answer
30 views

Would it be possible you create a retropie cluster that would run the different processes on each individual pi? [duplicate]

Hi I'm kind of new to the whole raspberry pi thing and have been researching about retropie that allows you to emulate games on the pi. Anyway would it be possible to create a raspberry pi cluster ...
0
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1answer
28 views

Connecting Pi Video composite to a multicamera-system?

I have connected Pi to a Zmodo multichannel camera system using a cable from Pi's video composite port to Zmodo Video in. I changed the display settings of the Pi to PAL output taking help from this ...
1
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1answer
23 views

Raspberry B+ USB -remove

can anyone please me if the USB physical ports can be remover from Raspberry B+ ? I am using it in an audio app so i don't want to see them on the case. Thank you
0
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1answer
31 views

Available GPIO Pins for Transmitter

I have a touchscreen that uses the following GPIO pins on my B+: PIN NO. SYMBOL DESCRIPTION 1, 17 3.3V Power positive (3.3V power input) 2, 4 5V Power positive (5V power input) 3, 5, 7, ...
2
votes
1answer
61 views

How to measure Power Supply without Extra Hardware on B+ and RPi 2

As shown in this question, for the Raspberry Pi model B, in order to measure the voltage you just connect a multimeter to the TP1 and 2 pads. How is this done on the Raspberry Pi model B+ and 2 which ...
3
votes
3answers
191 views

How is a Raspberry Pi different from an old phone

I've been looking into getting a Raspberry Pi, but I end up needing a case, a display, and some way to power it, and wanting some degree of portability. It seems to me that even the most outdated ...
1
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1answer
43 views

RasperryPi freeze after boot: can't login

I have a RasperryPi model B (512Mo RAM) and it worked well for 1 year. Several weeks ago I started having problems and I thought it could be the SD card (I sometimes halt it just unplugging the USB). ...
4
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0answers
50 views

RaspberryPi A+ USB Data Lines shorted

This is kinda weird problem. I used Raspberry Pi A+ for my small projects. I did all the programming using a USB WiFi dongle via SSH. It all went happy and fine until one fine day the dongle stopped ...
3
votes
1answer
88 views

Is the memory stacking order different on rPi B vs rpi 2?

This question about Package-on-Package RAM/CPU got me curious: My rPi B has the Samsung RAM packaged on top of the Broadcom (as I can read the Samsung product details off of the package). My rPi 2 B ...
2
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2answers
279 views

Official Resellers of Raspberry Pi Boards

Does anyone know of a list of the official resellers of the rpi board? How do you tell the board is official?
2
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1answer
245 views

A way to solder composite video directly to RPi B+ board?

I have a b+ newly purchased that I'm slimming down for a handheld build. Ideally, I'd like to be able to solder my composite video connection to the underside of the board like I could with a model ...
2
votes
1answer
34 views

Are RPi peripherals from version 1 compatible with RPi B?

I have some original Raspberry Pi devices that I want to use with the RPi B version. Are old Raspberry Pi Shields compatible with the new Raspberry pi? Specifically, I have an Xtrinsic MEMS Sensor ...
3
votes
1answer
98 views

RGB LED is not lighting up

I connected an RGB LED(common anode) via the GPIO, and tried to get it to light up, but for some reason when I run the command, the LED does not light up. Here's the code I'm using import RPi.GPIO ...
0
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0answers
47 views

Gpio state can't be changed when connected to a DC motor or led

I am using the pi4j library to control the gpios on the raspberry pi B, but I ran in the following problem: when I start a pi4j example like ControlGpioExample.java then the led(with resistor 220 ohm) ...
1
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2answers
63 views

How to have a Raspi trigger a Remote Control physically

I have a Remote Control for my windows shades and I would like to be able to trigger them using some software using a web interface or an android app. As I am an enthusiast programmer I would like to ...
0
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1answer
21 views

Stranded connector cables with raspberry pi

Is it safe to use stranded connector cables with raspberry pi? I suspect I blew my last RPi because I used the stranded connectors, don't want to get into the same situation again.
1
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2answers
315 views

What are the RUN pin holes on Raspberry Pi 2?

Inbetween the Display port, and the Activity LED on my Raspbery Pi 2, There are 2 holes boxed off, labled with: "Run". What are those pins? What do they do? is it a reset?
1
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2answers
87 views

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 it is possible to sell a product, based on the ...
1
vote
0answers
44 views

How to make a battery powered and re-programmable robot with raspberry pi? [closed]

Normally using a microcontroller what we do to make a robot: We write the code and compile it We connect the programmer to the computer and then transfer it to the microcontroller Now once we have ...
0
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2answers
150 views

Pi 2 Model B, display and TNC-Pi

Firstly I am new to the Raspberry world.I have purchased the following and it does not seem like they are compatible pin config and board/hole position. I noticed that the older PI had less PINs for ...
2
votes
1answer
212 views

Delay between bytes using py-spidev for SPI communication on Raspberry Pi

I am attempting to read/transfer data between an instrument and Raspberry pi 2, using the RPi as the Master and instrument as the slave. The data sheet states I must have a 9 ms delay between sending ...
2
votes
2answers
113 views

Resetting I2C? Or did I break my chip?

I'm connecting a TS45315 light sensor on an Adafruit breakoutboard to the I2C bus of my Raspberry. I access the data through the following simple Python script: ...
1
vote
1answer
121 views

Edimax EW-7811UN not detected by Pi, works fine on a PC

Hoping someone could help verify something for me. Up until a few days ago, my Edimax EW-7811UN was happily buzzing along. I was playing around with the GPIO pins when suddenly I noticed the blue ...
1
vote
1answer
269 views

How to wire up a DHT11 temperature sensor

I'm a Raspberry Pi (and hardware) noob and am trying to hook up a DHT11 temperature and humidity sensor. I've found two separate guides, and I'm seeking advice as to which I should follow. This UU ...
2
votes
1answer
230 views

Which raspberry pi model for playing with electronics, maybe more?

Raspberry Pi beginner here. I've been looking at these beasts for a while. I'm very comfortable with programming and command line, but want to start playing around with electronics powered by ...
0
votes
1answer
52 views

New Raspberry Pi SPI Interface Question

I was looking at the new Raspberry Pi. I wanted to know if the SPI Interface will be able to sample at a higher sampling rate. Does anyone have any information on this? According to this page, the ...
0
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2answers
74 views

Struggling with installation of Raspbian on sd card from a Windows 8 Machine

I am a first timer asking question here, and also a new Raspberry PI user (well, potential user). So, I bought a new raspberry PI 2 with 16 GB SD Card yesterday. The SD card was without Noobs, so I ...
4
votes
3answers
276 views

Using Wi-Fi Adapter reboots Pi

I'm using an Edimax EW-7811Un in my Raspberry Pi 2 under Raspbian. Version is Linux stickpi 3.18.7-v7+ #755 SMP PREEMPT Thu Feb 12 17:20:48 GMT 2015 armv7l (or at least that's the closest I can ...
1
vote
1answer
150 views

How to access SPI on Raspberry Pi B+

I tried searching here and other places. What is the best way to access the SPI and get the fastest speed out of it. My project involves interfacing the Pi with an ADC that is rated for 5Msps ...