Questions tagged [hardware]

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

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5
votes
2answers
659 views

Is it possible to control a small relay?

Need to control rc model relays (that operartes high-voltage motors). Is it possible to make with RPi without additional hardware? Any links to the solution?
3
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4answers
8k views

How to connect Raspberry to Grove Components?

Has anybody already connected some Grove Components to the Raspberry Pi? How do I connect the system? And where can I find code tor program it?
26
votes
4answers
27k views

Why is my SD card slow?

My SD card seems to be running slow. I have an ADATA 16 GB SDHC Class 10 card. I checked the compatibility list which lists a card with similar specifications, and it states that it is "working". Even ...
16
votes
3answers
8k views

If connected over HDMI will the 3.5mm audio jack socket work?

As far as I know only one video output, either the HDMI or RCA video socket, will work at a time. Now I want to know if this also applies to the audio output. Will it be transmitted over both sockets,...
24
votes
10answers
28k views

Is it possible to support a remote infrared control using the Raspberry Pi?

It would be interesting to use the Raspberry Pi as a replacement for a media center; however, as I see it now the Raspberry Pi needs to be controlled by means of a keyboard or over the network. Is it ...
26
votes
3answers
32k views

How can I record audio using a microphone?

Just came across this question while trying to connect a webcam. If the webcam encapsulated audio that is fine. But what if I want to attach a microphone in another location / locations. Question: ...
6
votes
3answers
6k views

How do I add 3G connectivity?

How do I extend the hardware of Raspberry Pi to add GSM/3G connection? Is it likely that the Android port will be able to utilise such a connection?
7
votes
2answers
11k views

Raspberry Pi Drones? - Flying time? [closed]

I heard about Raspberry Pi flying drones. Does anyone have a clue how long you can fly with those things? For example: An AR Parrot drone can only fly for 12 minutes. Does someone have an idea to ...
65
votes
5answers
81k views

How do I hard reset a Raspberry Pi?

How do I hard reset a Raspberry Pi? Obviously you can power cycle, but is there a more subtle way, like a reset pin? It would be very useful to connect a watchdog in case the Raspberry Pi crashes (...
17
votes
5answers
4k views

How do you protect the Raspberry Pi when you are carrying it about?

I am getting mine this week (or so I am told) and I am nervous about breaking it on the move since it looks so open and bare. How do you bring it around without breaking it? It has arrived. The ...
35
votes
4answers
28k views

What is the highest performing hardware configuration?

I know that exact benchmark numbers will vary between manufacturers, but in general if you only consider higher end flash drives, SD cards, and USB HDDs and your Raspberry Pi is connected to a network ...
14
votes
4answers
12k views

Home cloud server with raspberryPI. What caveats I may get?

Originally my question is here. But nevertheless I will copy part of it here. At home I have external USB 3TB HDD. Also at home I have a wifi, but there is no strict computer place. So my first goal ...
8
votes
3answers
665 views

Are all of the devices the same?

I just saw a picture of a Pi on the Element 14 website, and noticed some of the components are different colours and shapes to my Pi, (which was from E14). The colour of the RCA plug (Mine is black, ...
23
votes
7answers
33k views

Using PCI or PCIe Devices

Is it possible to use some sort of adapter, or even to solder a device to the Raspberry Pi board to support PCI or PCI express devices? I'm thinking smaller devices such as NICs or Sound Cards. I ...
22
votes
3answers
6k views

Is my Raspi okay sitting on a magnet?

I have a big magnetic sheet that my Raspberry Pi is sitting on. It seems fine, but are there any dangers?
9
votes
2answers
15k views

How to mount the EXT4 partition on the SD card from within VirtualBox

I have an SD Card reader built into my Lenovo laptop and I've installed VirtualBox and Debian squeeze to a VM but I can't seem to view the EXT4 partition, or any partition for that matter, on the SD ...
16
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3answers
6k views

Pi as a RFID Reader

I have a need for a quick and dirty UHF RFID reader. I'm very green when it comes to electronics and have a couple questions: Has someone already done (documented) this? Can a UHF antenna be ...
55
votes
5answers
54k views

Why is the CPU sometimes referred to as BCM2708, sometimes BCM2835?

I've seen the System on Chip of Raspberry Pi referred to usually as "BCM2835" (e.g. on Wikipedia), but sometimes as "BCM2708" (e.g. sources for Linux SPI driver are in bcm2708.c, or in comments to my ...
24
votes
5answers
41k views

What SPI frequencies does Raspberry Pi support?

What SPI frequencies does Raspberry Pi support? Additionally: Are they all supported by the bootc.net SPI driver? Are there any additinal things I should be cautious about when trying to ...
71
votes
7answers
58k views

How do I control the system LEDs using my software?

There are 5 LEDs on the RPi: OK, PWR, FDX, LNK, 10M. I'd like to know if it's possible to control any of these from software i.e. turn them on, or change intensity (or even change colour gasp). And ...
31
votes
1answer
18k views

What are the maximum operating temperatures of the components?

What are the main sources of heat on the board? What temperatures do these components reach under load?
14
votes
1answer
2k views

Where can I find the relevant ARM documentation?

Could someone provide links to the correct documentation on the ARM site that relates to the processor in the Raspberry Pi? It would be useful to have a canonical answer for which ARM docs to use and ...
11
votes
3answers
2k views

Why are certain resistors not populated on the device?

I just took a closer look at my board, and a few of the resistors have pads but are not actually soldered on. It seems R4, 5, 7 and 10 by the GPIO header are absent, as well as 36 and 37 on the other ...
27
votes
5answers
9k views

Can I switch mains devices on/off?

Is it possible to switch mains-powered devices (such as a coffee machine) on and off using the Pi? If so, what extra components do I need?
8
votes
3answers
4k views

Are there any expansion boards available for the GPIO?

Are there any expansion boards available for the Raspberry Pi for use with the GPIO?
13
votes
2answers
8k views

Is the BCM2835 (Broadcom SoC) proprietary to the Raspberry Pi organization?

I ask because assuming someone wanted to manufacture their own (large) batch of RPi's, the major component that would be most difficult to procure is the Broadcom SoC (see here.) If obtaining this ...
60
votes
4answers
69k views

How do I attach a GPS receiver?

I would like to hookup a GPS receiver to my Pi so that I can: Get my geographical position Synchronise clock when not connected to network What are my options? Will any hardware supported by gpsd ...
37
votes
5answers
32k views

Does the Raspberry Pi have Hardware Floating Point support?

There are a few articles around that say it is best to use soft float algorithms on ARM devices, because very few ARM chips have hard float coprocessors. So, does the RPi have hard float support? If ...
14
votes
1answer
4k views

Can the video acceleration on the Raspberry Pi be used for video compression for surveillance and recording?

I was wondering about installing the Raspberry Pi as a video recording device and connecting a USB camera to it. Of course, I'd rather compress it using something like MPEG. Does the hardware support ...
14
votes
2answers
2k views

Where can I find the schematics and supporting design documents for the hardware?

I've tried to search for this online, but other than a few posts on the Raspberry Pi blog, I can't find an official source of the design documentation for the hardware. It was my understanding that ...
14
votes
2answers
1k views

What are the two long components on the board?

On the Raspberry Pi there are two components about an inch long, one next to the ethernet and one next to the logo. I have been wondering since I received the device what these components are? These ...
13
votes
1answer
4k views

Are there hardware-incompatible video codecs?

Are there any video codecs that are not compatible with the Raspberry Pi based on hardware requirements?
40
votes
4answers
5k views

Can the Pi be potted in epoxy?

In order to completely waterproof some basic electronic circuits, I've often used potting epoxy to stop anything getting to the internals. However, this has mainly been with stuff using PDIP, which ...
59
votes
5answers
143k views

What is the maximum / minimum operational temperature?

As per the title, what are the maximum and minimum operational temperature ratings of the Pi before it stops reliably working? Could this also depend on the SD card in use?

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