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Questions tagged [hardware]

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

2
votes
2answers
22 views

Hardware Level Query for Pi Version

Is there a way you can query the model and revision of a Pi from a script without accessing files that are generated at install time for the OS? I have a project where a web page needs to display the ...
0
votes
2answers
24 views

Get different values from potentiometer even not touching

I have a potentiometer that is used to adjust volume level along with MCP3008 but even if I don't touch it, its values are going and coming as following. Press Ctrl-C to quit... Channel 0 minus 1: ...
0
votes
1answer
19 views

Can i use 5v 3amp. in Raspberry Pi3 B+ [duplicate]

i am using Raspberry Pi3 B+ and i am in a confusion that can i use 5 volt, 3 ampare adaptor in my Pi?
0
votes
0answers
14 views

Thermal imaging

I was wondering if anyone knows of a thermal imaging app for either iOS or android, just purchased an p3 b+ and just trying to get a few things clarified befor I start her up, also any info on a ...
0
votes
1answer
22 views

Designing of Auto following cart

what method can i use sense movement of a person to design an auto following cart for supermarkets.? i need to follow a specific person can i use the WiFi or BLUETOOTH signal strength of consumer's ...
-1
votes
0answers
46 views

Sniff 433MHz signal from Raspberry Pi 3 B+

I have a remote for my kitchen fan where I can turn on the fan and light. I want to sniff the signal for the light toggle so I can use my Raspberry Pi 3 B+ to send the signal. I bought a 433MHz ...
1
vote
3answers
76 views

Raspberry Pi 3b+ not booting

I got a raspberry pi 3 b+ for Christmas and yesterday whilst installing a Pi Hat's Software (Rasp.io Duino) it just flat out died after showing that there was an under-voltage, even though I was using ...
-6
votes
1answer
28 views

Transistor Count vs Bit Count [closed]

When looking at the history of microprocessors I see that there is not a consistency with the bit count and transistor count of the microprocessors. For instance the first Intel 4004 was a 4 bit chip, ...
1
vote
2answers
37 views

How to use Solenoid Lock 12V DC

I'm new to this, and I can't see how to control a solenoid lock using raspberry (The wirings). I have an 8x AA Battery pack which is wired to output 12V. I don't know where to connect the black and ...
0
votes
1answer
38 views

GPIO causes random input on room light switch / EMP?

I am building a simple application with a switch on the rasperry pi 3 b+. I have connected GPIO pin 18/32 through a 56k resistor to 3.3v (tried pin 1 and 17) to have it pulled up. The switch closes ...
2
votes
1answer
30 views

Header Pin Configuration on Pi Zero

I need to wire up 3-5 (maybe a few more) Pi Zeros for a monitoring project that will only require I2C so I only need pins 1,3,5,9 or 3,4,5,6. I can go either 3v or 5v. I want to minimize soldering and ...
0
votes
1answer
78 views

Micro USB cable stuck on Raspberry Pi 3

I managed to get Micro USB cable stuck on Raspberry Pi 3 B+ Wiggling side to side doesn't work. NB! This isn't a troll post.
0
votes
1answer
21 views

T-Cobbler Plus for Pi Zero W?

I'm looking at getting a T-Cobbler Plus as shown here. For my project I was thinking of using a Raspberry Pi Zero W, and my question is whether the T-Cobbler will work with the Zero W? The description ...
1
vote
3answers
65 views

Add-on sd card in pi?

I want add-on SD card reader/writer/slot/controller in my raspberry pi so that i can keep OS separate from my program. Primary SD card will load OS and work normally and program & data will remain ...
0
votes
0answers
31 views

USB Microphone gives error 'Device or Resource Busy'

I've recently purchased this microphone for use with my Pi 3, but I can't seem to get it to work. I run arecord -l and the Pi can see my device: **** List of CAPTURE Hardware Devices **** card 1: ...
2
votes
0answers
28 views

How to connect CMOS image Sensor to Raspberry Pi

I'm wondering if it would be possible to take an image sensor out of an old camera and plug it in to a raspberry pi via the csi connector. For Example would it be possible to take one like this from ...
3
votes
1answer
99 views

What are the functions of the test pads on the Pi 3B/3B+?

The various models of the Raspberry Pi comprise numerous test pads (testing pins). Many of these pads however are not mentioned or properly labelled in the official reduced schematics the Raspberry Pi ...
0
votes
0answers
65 views

How to Make Router(AP) with raspberry pi

I am trying to make AP(Router) with raspberry pi. Using your new Raspberry Pi 3 as a WiFi access point with hostapd At this command I am getting certain error !! entepi@raspberrypi:~ $ sudo /usr/...
0
votes
0answers
34 views

Raspberry pi tor router

I am trying to make tor router from last 3 days. I have tried everything.. Too much errors and services are not working ? I have android phone so i am going to provide Internet via android. I don't ...
-1
votes
0answers
21 views

Python - Microphone recognition problem

I'm recording sound perfectly via arecord command. I use MEMS microphone with i2s interface and works well. But also I installed soundmeter program from https://pypi.org/project/soundmeter/, and it ...
1
vote
0answers
37 views

Storage device interface through MIPI CSI+DSI connections

So I love the Raspberry Pi and currently own and use a model 3b (not plus) for learning more about linux and hardware as well as simple projects like a DNS cache server. Lately I was thinking about ...
0
votes
1answer
62 views

Elecrow 7" HDMI screen reports No Signal

I'm attempting to get an Elecrow 7" HDMI LCD touchscreen (Amazon UK) to work with my Raspberry Pi 3 B+. Upon following the instructions enclosed with the screen, all I see is "No Signal". The ...
0
votes
1answer
31 views

Power from Pi 3 to 7" display

Does the 3v3 carried in the FFC cable at the display header of the Pi 3 B+ supply power to the 7" touch display? Or do I need to supply power at J1.1 and .5? If so this power can be pulled from the ...
1
vote
0answers
62 views

PI NOIR Camera Not Working

I recently bought a Raspberry Pi 3B+ and a Pi Noir Camera and attempted to set them up. I followed the install instructions on the Pi website for the board and camera, and unfortunately received an ...
2
votes
0answers
23 views

Any issue with magnet too close to rpi?

I don't think this is an issue, but a search turns up nothing and I just want to be sure. I'm working on a project that involves a single speaker mounted approx. 2.5 to 3cm above a Raspberry Pi 3. ...
0
votes
0answers
47 views

2-way communication with Raspberry Pi and Laptop/Phone on WebRTC with UV4L

I am trying to run UV4L on my Raspberry Pi to establish a two-way communication via WebRTC. I have been able to stream the video from the Pi Camera and Audio from my laptop to the rpi's speakers but ...
-1
votes
0answers
27 views

Building an electronic lock box connected to a Raspberry-Pi+keyboard,

I've been kicking around an xmas idea for my young nieces and nephews. I'd like to connect a small, electronically controlled lock box to a raspberry-pi + small display device + keyboard configuration....
0
votes
0answers
33 views

Raspberry Pi 2 model B BCM 2835 [duplicate]

I have a Raspberry Pi 2 model B, so I am suppose to have a BCM2836 processor. But, when I check it in /proc/cpuinfo the result is not BCM2836 but BCM2835. What is it wrong? What processor do I have? ...
0
votes
0answers
51 views

how to solder a UFL antenna for RPI3B+

I understand that soldering a UFL antenna is doable in RPI3B. So far i Have not seen any work done similarly to RPI3B+. The location to solder the UFL socket seems to be moved to the top left just ...
0
votes
0answers
34 views

Wifi nor Bluetooth interface not found

Today i after long time falshed new retropie os and after some finding found out wifi and bluetooth is showing as not found i tried 3 fresh installs of retropie and now i tried raspbian desktop still ...
0
votes
1answer
52 views

Wiring Omron D6T Thermal Sensor to Raspberry Pi Zero W with Adafruit T-Cobbler Plus

I have a Raspberry Pi Zero W connected to a Adafruit T-Cobbler Plus and breadboard. My question is regarding wiring. I have followed tutorials to create simple circuits, however, I am struggling to ...
0
votes
2answers
40 views

What is the easist way to connect a switch button to the GPIO pins?

I am trying to up my pi skills on working with hardware. I would like to connect a few buttons to my gpio pins. I have seen various ways to do so and want to know the simplest non-permanant way. I've ...
0
votes
1answer
52 views

Connecting to mobile network on startup using ppp0

I have a sixfab 4G LTE shield and the module through which I connect my RPi to cellular data. It requires few commands to be executed in order to connect. How do I make it run only once post startup ...
2
votes
1answer
95 views

How do you clean the hardware?

For those people who made the mistake of letting dust settle on the delicate components on the Pi, this is for you. I have had my Raspberry Pi for two years now, and for the majority of that time it ...
1
vote
1answer
118 views

Raspberry Pi Zero hardware based video encoding

I'm trying to build a dashcam with a Raspberry Pi Zero with an official Raspberry Pi Camera (version 2) in an official Raspberry Pi Zero case mounted with a old GPS device cradle. I installed motion ...
0
votes
0answers
20 views

Are STM32 Nucleo expansions compatibles with Raspberry Pi?

I am a beginner both in the world of Raspberry Pi and STM32. I do however have a USI STM32 Nucleo expansion, which is meant to be connected to a STM32 board to provide it with the ability to ...
0
votes
0answers
16 views

Receive data in Raspberry Pi 3 from Windows Embedded PC

I want to know what would be the best way to connect the Raspberry Pi 3, without using Ethernet, Wi-Fi, Bluetooth or RS-232, to receive data from a program in the PC. Can I do a USB to USB connection, ...
0
votes
1answer
76 views

Kernel panic on shutdown/restart when relay board connected

I have a 3B+ with an added relay board. It's running Rasbian Stretch Lite (Linux blinky-stockholm 4.14.69-v7+ #1141 SMP Mon Sep 10 15:26:29 BST 2018 armv7l GNU/Linux) It seems like, if the relay-...
0
votes
0answers
26 views

read from sd card using lpc2378 using spi

How to read from sd card using lpc2378 using spi? I am looking for specific registers which have to be configured ? There is no separate topic for arm since rpi is based on arm microcontroller I am ...
1
vote
1answer
39 views

Music Sequence, which hardware and software is best? [closed]

This question is supposed to be subjective.. well I need to ask this one way or the other... soooo: As a project I wanted to create my own music sequencer (like a drum machine or synthesiser) from ...
1
vote
0answers
37 views

Faulty Ethernet interface?

After running apt-upgrade on a Raspberry Pi B+ 512MB to bring it to the current version of Raspbian GNU/Linux 9.4 (stretch) the Ethernet connection stopped working. The interface's behaviour after a ...
0
votes
1answer
21 views

getting the sound and mic to work from google aiy kit on your own image

I bought and installed the Google AIY sound kit and am trying to get it to work with my own image. i followed their hacking.md file and installed all the hardware drivers but "arecord -l" shows no ...
0
votes
2answers
55 views

RP3 isn't working after months of not using it

So, I haven't used my RP3 for months because I was busy with other things to do like school and exams. Now when I took out my RP3 and plugged it into a power supply, I noticed the power goes off after ...
4
votes
0answers
89 views

How does the hardware cause long delays?

I want to write a bit-banging driver for a Raspberry Pi 3. For testing I developed a simple Linux kernel mode driver which toggles a GPIO pin with approx. 1Mhz. Here is the code excerpt. static ...
1
vote
1answer
154 views

luma.core.error.DeviceNotFoundError: SPI device not found

I'm trying to setting up my new Dot Matrix MCU LED Display Module 8x32 with MAX7219 on my Raspberry Pi 3. I followed all the steps here https://max7219.readthedocs.io/en/0.2.3/ and of course using ...
2
votes
1answer
64 views

Everything is dead, but Pi 3B still boots

I left my Pi 3B (V1.2) alone, running a 64-bit build of Debian for a project. Everything was fine. When I returned, however, I found that everything was dead. Nothing was connected to it, by the way. ...
0
votes
0answers
60 views

Can raspberry pi cases cause static damage?

This may be a stupid question, I'm not sure. Almost all of the raspberry pi cases are made our of plastic, and this made me think, if I wasn't it put the raspberry pi inside a case, and then put ...
0
votes
1answer
38 views

Using Raspberry in Nanosatellite [closed]

I want to use raspberry pi in space projects like cubesats. I worry about effects of space radiation on raspberry.Is this possible to do?or i need to choose another board or something like that?
-4
votes
1answer
62 views

Can we manufacture a product using same board design as Raspberry Pi?

If we program an app on Raspberry Pi, can we duplicate the Raspberry Pi hardware design, manufacture our own boards, and sell them as our product without paying license or royalty for the hardware ...
0
votes
0answers
61 views

I took out one wire on my Raspberry, then it stopped working

Simple what the title says. I was working on a small project with my pi, I took out one wire and my pi turned off and didn't wanted to start up again. The circuit looks like this from this tutorial. ...