Questions relating to the physical components that the Raspberry Pi consists of.
0
votes
2answers
27 views
Litterature/books on how to use the RaspberryPi for servo controlling [closed]
I would like to use my Raspberry Pi for controlling a servo system and in that respect read your suggestions for litterature on this topic. I know programming, both C and Python, so general ...
1
vote
1answer
71 views
Has anyone manage to drive a HD44780 LCD using a 74HC595 shift register?
Using Python, I am trying to interface with a HD44780 16x2 LCD display and would like to save a few pins from my Pi's GPIO banks by using a 74HC595 shift register.
So far, I have managed to run the ...
0
votes
1answer
101 views
How can I tell if my Raspberry Pi supports H.264 hardware acceleration?
According to this Wikipedia article, Raspberry Pi's manufactured after August 24th, 2012 have H.264 hardware acceleration.
Is it possible to tell if my pi supports such acceleration by inspecting it ...
0
votes
2answers
82 views
Which platform is best for project? Raspberry vs Arduino?
[CAVEAT: Very basic question from someone who not yet even at the "newbie" stage. Please forgive is the question is too basic and/or poorly formed. --thank you!]
Greetings!
I work for a small ...
0
votes
0answers
25 views
No audio recording using USB-soundcard
I have this issue. In short, I tried to use AlsaMixer with an usb-soundcard labelled Logilink USB2.0 to Audio Adapter. It is being recognized, I can play audio and hear it through the connected ...
0
votes
1answer
45 views
What is the pin distance of GPIO
I'm going to buy necessary stuff for using the GPIO from a Czech reseller to avoid the shipping costs. For this, I need to know: What is the nominal distance of the pins on the GPIO?
(I don't have my ...
0
votes
0answers
53 views
SM5100B GSM connection with Raspberry
I would like to ask you if you know how to connect SM5100B with the pi. I connected the rx/tx lines, I have the power on but when I run the hwinfo line the system does not recognize it. Is there any ...
0
votes
1answer
168 views
Pi Not starting up, no light
So my pi is not starting up. None of the lights go on. I've searched online for similar problems but couldn't find anything.
HOW IT HAPPENED:
I was controlling my pi with my laptop using PuTTY. ...
2
votes
1answer
79 views
Where to measure the DC voltage in RPi?
I have got a power source for my RPi. The manufacturer claims that the output voltage is exactly 5V. However, I would like to measure whether it is true, and I would like to find out how stable it is ...
1
vote
3answers
198 views
Fix broken plastic on SD Reader
So I received my Raspberry Pi today and as soon as I put in the SD memory card the tiny plastic that holds the memory card on the left hand side broke of. It didn't break of because of use of force, ...
8
votes
2answers
883 views
Pi powerd OBD-II Computer
I recently built an OBDuino32k with my Arduino Uno. Unfortunately, I built the wrong interface, so I can't use it with my car. I built an interface for ISO instead of ELM.
I bought a Raspberry Pi ...
2
votes
2answers
84 views
Capacitor C6 dislodged
I managed to break the C6 capacitor on Raspberry Pi Model B. Its the 220uF 16V EE6 capacitor. Nobody seems to have such low capacitance, low voltage capacitor (the least I can find is 220uF and 60V). ...
2
votes
3answers
168 views
What is the point of the spikes on the Raspberry Pi?
I was looking at my Raspberry Pi recently, and noticed strange spikes protruding on the top of it (They are the ones next to the yellow input thingy)
What are they used for? What is their purpose?
3
votes
1answer
75 views
Can I power the device via the “Big” USB Type A connectors? [duplicate]
For connecting external hard drive I want to use an active USB hub.
I found some USB hubs which seem also to power the upstream ports.
While this is under normal circumstances very bad I was ...
4
votes
1answer
94 views
AD7705 analog to digital converter with RPi, viable?
I have a couple of AD7705 chips I'm attempting to use with my RPi to read the analog pins from a sensor that spits out 0~4V. Nice, detailed datasheet for the ADC is here:
...
0
votes
1answer
52 views
Is there a system that i can run that can seamlessly pull audio and video files from a flash drive?
I noticed that a lot of people are asking about video performance capabilities and things along those lines, but they all seem to be either streaming their videos through Ethernet via Youtube, etc or ...
3
votes
2answers
111 views
How to detect objects with minimal weight?
I'm looking into a build where weight is very important and needs to be minimized (it flies). I want to be able to detect objects and path around them, using a raspi as the brain. My first thought ...
2
votes
3answers
872 views
Controlling a 12V RGB LED strip with the GPIO
I have an RGB LED strip (specifically, this one - 1 meter's worth) and a 12V power supply to go along with it, since the raspberry pi alone can not power the strip. I am going to be using pi-blaster ...
1
vote
1answer
54 views
How to use a key listener?
Ok, at the moment I am working on adding motors to a lego tank that I have. I have one servo in the front to steer and another motor in the rear that will make it go forwards and backwards. i have ...
7
votes
2answers
170 views
Is there some kinda serial number available from OS level?
I would like to identify which RaspberryPI hardware instance is booting on my network.
I have plans for using a LOT (not just 10) of them as clients in a larger solution, but I would like to reuse ...
0
votes
1answer
78 views
I2C adapter to protect RPI?
I'm not good at hardware at all so apologies shall this question sound funny or weird. Is there a board or something that I could use to protect the I2C pins of my raspberry from being damaged? Just ...
0
votes
1answer
163 views
Variaty of sensors sitting on a single board for RPI
Is there a board that has a few different sensors sitting on top of it and able to talk to RPI via I2C/1-Wire?
0
votes
0answers
80 views
Networks drops, and freezes
Yesterday I've received my Raspberry Pi, and there are some issues I can't get rid of...
After a few minutes (3-4 minutes to be exact) of seemingly error free work session through SSH, the network ...
1
vote
2answers
135 views
Need help with (ambitious?) project
I gave up on using my Pi as a VPN'd NAS, since the CPU is too slow to handle OpenVPN (see here Low bandwidth internet over VPN).
So I want to set it up to do (all of) the following:
Control a light ...
2
votes
0answers
146 views
Control Hardware PWM frequency
I'm using the hardware PWM output with wiringpi. It provides the function pwmSetClock that should make it possible to change the frequency. ...
2
votes
2answers
220 views
Model B without soldered connectors?
Is there a possibility to get a Model B where the RJ45 and USB connectors aren't soldered to the board yet? It would be nice if I could use a pinheader to place them freely - this would allow neat ...
1
vote
1answer
325 views
Using old D-Link Wifi stick
My brand new raspi just arrived. I played around with raspbmc and did like it. Now I have an old D-Link DWL-122 Wifi stick flying around and I'd love to use it as the WIFI device.
So, is it possible ...
4
votes
2answers
413 views
Cannot read input to SDA/SCL GPIO pins
I'm totally stumped trying to figure out how to read input to the SDA/SCL GPIO pins on the Pi.
Context: I have a Wiegand 26 RFID reader that I would like to read data from. The idea is that I get the ...
1
vote
1answer
55 views
How to access the ARM cache memory of RaspberryPI?
I would like to enable or disable portion of ARM L2 's cache memory of raspberry PI. I am working on performance evaluation of raspberryPI by locking the cache memory of it. Please suggest me some ...
0
votes
2answers
1k views
Why Isn't My Ethernet Working?
I just got Pi Model B. I downloaded Wheezy on SD card and plugged in all of my cords. Everything works fine except the Ethernet port.
The LINK LED flickers for a second while booting up, but then it ...
3
votes
2answers
319 views
underclocking to prevent overheating in the summer
I'm planning on installing my raspberry pi in my garden shed.
I'm living in the Netherlands so very cold winters and occasionally very hot summers.
So I was wondering: does anyone have experience with
...
5
votes
2answers
365 views
How can I turn the lights off on my pi?
I'd like to build a small internet radio out of my pi, but I'd like to use it at night, when the flashing LEDs would be disturbing. Is there any way to disable them?
6
votes
2answers
1k views
Editing Serial Number
On the official raspberrypi.org forum, "Dom" - a moderator wrote:
I've fudged my board to have your serial number
How do I edit the serial number of a Raspberry Pi?
3
votes
3answers
300 views
Can we put a Heatsink on the Raspberry Pi?
how bout RAM Heatsinks, separate item, is it possible, although have not seen one, but is it small enough to fit? viable? since im torrenting 24/7 (well not really 24/7)
0
votes
0answers
182 views
Problems using ADS1115 with RPi
I am trying to figure out how to use the ADS1115 ADC with my RPi - using some example bash code for i2cset and i2cget I found in this forum, I'm getting inconsistent readings. There seems to be a ...
0
votes
0answers
84 views
Powered USB Hub
I have a N68KH 4 port USB 3 powered hub connected to my Raspberry Pi. The hub recognizes the Kingston Data Traveller but will not find the keyboard or mouse. ANy answers please?
6
votes
4answers
3k views
Is Pi powerful enough for an oscilloscope project?
My goal is to make Pi based instruments, starting with an oscilloscope. So I read answers to
What Analog to Digital Converters Are Available For RPI?
How can I connect an analog to digital ...
1
vote
3answers
432 views
Get GPS position and transfer them to server via GPRS
I'm extremely new to hardware/raspberry pi. I brought a 100$ gps tracking device which does the following -
Once SIM card is inserted into the device,it gets the gps co-ordinates and transferred to ...
3
votes
2answers
232 views
Using RasPi to send signal, for locking / unlocking alarm clock?
I'm totally new to electronic/hardware/interfaces/GPIO sort of thing, but I have a project in mind. My house has an alarm system, which can be unlocked by key, with buttons. The alarm system gives a ...
2
votes
2answers
424 views
Pi Model B quits working: Red PWR, pinprick green ACT LEDs
I only just got my Raspberry Pi a week ago, and it has just stopped working. When I plug it in, the red PWR leds lights up like normal and the ACT led barely lights up. I think I may have put too much ...
0
votes
1answer
506 views
Sandisk Extreme Class 10 SD Stopped working?
I own a Sandisk Extreme 4GB Class 10 SD (30mb/s), which used to work fine in my Raspberry Pi (booted Raspbian and Raspbmc), but it has stopped working completely. I have what is known as the "red ...
1
vote
5answers
943 views
What to buy for my Pi to connect to my old laptop?
Hey guys I hope that this question has been asked so many times.Live in India & I am new to Raspberry Pi hack. All I have is an old laptop of mine, HP DV6700 to be precise. It doesn't have an HDMI ...
4
votes
2answers
851 views
Trouble with Wi-Fi connection
I'm very excited to get into my Raspberry Pi, but I am pretty useless when it comes to most hardware and networking issues.
I purchased a Edimax Wi-Fi Adapter, but I am having trouble getting it to ...
3
votes
2answers
415 views
Multiplexing 4-digit 7-segment display is flickering
I connected a 4-digit 7-segment display to the GPIO-port. It uses 8 ports for the LEDs and 4 ports for multiplexing via PNP-transistors. It is running so far with a loop written in C program:
...
2
votes
1answer
170 views
Processor features available
What is the processor feature "java" shown below? Is it like an instruction set? How to get use of it?
$ cat /proc/cpuinfo
Processor : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : ...
1
vote
1answer
2k views
RS232 beginner tutorials
I am really beginner in Linux and in electronics but I want to learn programming hardware using raspberry pi board, since I have one (model B).
I have installed raspbian os, now I want to understand ...
5
votes
1answer
410 views
Industrial applications
I've been wondering what's the durability of the RPI and the maximum temperature it can operate on. Is it possible to use it to replace some industrial computers?
I'm thinking set-top boxes for ...
3
votes
1answer
1k views
how to know if my Raspberrypi's Ram size is 265MB or 512MB
I've just bought a new raspberry pi as a 512Mb Ram but this website is saying that if my chip contains 2G so it is 265 Ram which is my case my chip number is
k4p2g324ed-agc1
, so if you are ...
4
votes
2answers
2k views
What's the Difference between Raspberry Pi and Arduino?
This question stems from a large lack of understanding, but it concerns a project I've wanted to do for a while.
This is an Instructables page for an 8x8x8 led cube, and the 70th step addresses the ...
1
vote
1answer
348 views
When connecting to ethernet it's shutting down/crashing
A few days ago I connected my Raspberry Pi to my screen and I did some work directly on it (without GUI, thus only command line) and suddenly it crashed / shutdown.
The red light is on all the time. ...
