Questions tagged [hardware]

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

140 questions with no upvoted or accepted answers
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114 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 ...
4
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1answer
231 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
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0answers
83 views

Read/Write LAN9512 EEPROM

We are building a device around the Compute Module 3 and since it needs internet access we decided to go with the LAN9512 that was also used in the Raspberry Pi earlier. The LAN9512 requires an ...
3
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0answers
351 views

Why is my RPi freezing of its own accord?

I own a RPi 3 Model B, which does a very good job of freezing of its own accord, even when not much activity is being done. I mean, I can still move the mouse, but it stays in its last frame and I ...
3
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0answers
2k views

Pi bluetooth not detecting any devices

Board: Raspberry Pi 3 I have a Pi which is unable to detect any bluetooth peripherals. I diagnosed the bluetooth service by running sudo service bluetooth status which throws the error Failed to ...
3
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0answers
3k views

Possible to repair Raspberry Pi 3 SD card slot?

I accidentally pulled the pi out of the case before realizing the SD card was still attached. The right pad can still be soldered but the left one appears to have been pulled off. Is there anything I ...
3
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1answer
461 views

How to use PI4J with a brushless motor?

I have a Raspberry Pi 2 model B. I would like to be able to control a motor with a regulator and PI4J. I put the black cable to a ground pin and the PWM pin to pin 26. I've worked with servos before, ...
3
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0answers
534 views

DS18B20 temperature sensor not found in folder

I've bought the camjam edukit 2 for my pi which includes the DS18B20 temperature sensor. However, after going over the instructions 20 times, rebuilding it a same amount and searching online, I still ...
3
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1answer
4k views

Using Android phone as microphone for R PI B+

I'm planning to use Jasper for voice control on my Raspberry Pi B+. However, there are no microphone sockets and I do not have a USB mic. I would like to know if there is any way I could use my ...
2
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0answers
55 views

Second WiFi adapter for the Raspberry Pi 4 B

I need a second WiFi adapter for the Raspberry Pi 4. For RPi <=2 (without integrated WiFi) and with RPi >= 3 the chipset BCM43143 was recommended. Does this still apply for the RPi 4? Can I only ...
2
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0answers
232 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 ...
2
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0answers
41 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. ...
2
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0answers
977 views

WiFi not working on fresh install

I have had my Raspberry Pi for a few years now and today I went to do a fresh reinstall of Raspbian. I downloaded v2.4.4 of NOOBs and used that to install Raspbian. Everything installs nicely except ...
2
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2answers
523 views

Could a RPI 3B+ running Android Things support touch-display and display module with different views?

We are currently working on a project with a Raspberry Pi 3 B that will run Android Things NIH40K, 0.4.1-devpreview, Jun 15, 2017. As it runs AT I would like to connect two separate displays, one ...
2
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0answers
201 views

Raspberry Pi + Windows 10 IoT Core + RS485

Has somebody ever worked with windows 10 IoT Core and used RS485? I would like to receive some signals from the RS485 device. I would like to do this with Windows universal app.
2
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1answer
102 views

Vibration-induced power loss problem

I am a pilot using a Pi 3 as an ADS-B receiver for a gyroplane. It works really well provided I don't try to have the Pi mounted to the aircraft anywhere. As soon as I do, the vibration seems to cause ...
2
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0answers
148 views

Best Way To Power Raspberry Pi Zero and External 4.5 - 36v Circuit

I am creating a drone where I have a Raspberry Pi Zero, and a Motozero. I need to supply the Motozero with power from 4.5 to 36 volts as well as the Raspberry Pi Zero. What is the best way to do ...
2
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0answers
352 views

Networking - Two Raspberry Pis communicating over wired connection

As a part of my research I need to have two Raspberry Pis and a Pixhawk all within the body of a UAV. I know I can get one Pi connected to the Pixhawk over mavlink, but how can I get the two Pis ...
2
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1answer
87 views

Raspberry Compute Model 3, is hardware opensource and approach to integrating HD camera on board?

Im planning to build a home security video surveillance to record video and stream it. This is a personal project but I want to approach it with a production ready mindset, as a challenge for myself. ...
2
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0answers
944 views

Safest highest operating temperature of a Raspberry Pi 3 Model B

What is the safest highest operating temperature of a Raspberry Pi 3 Model B? I was able to get my temperature up to 77'C by running: fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/...
2
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1answer
218 views

RaspberryPi.Net Libary LCD Display

So my problem is, that we want to control a LCD (HD44780) Display with our Raspberry Pi Model B V1.1. The Libary seems to have a support for it. But there only seems to be one example in the whole web....
2
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0answers
131 views

Problems with Kali on raspberry pi, plus some mac issues

Just yesterday I was able to boot Kali on my raspberry pi without much of a problem. The following day, however I tried booting it as usual. It showed the boot screen and everything with the four ...
2
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0answers
59 views

Robot running off Raspberry Pi A+

I am participating in a competition where I need to make a motorized vehicle that goes a distance you learn immediately before competing. What I have in mind is to mount a Rasp Pi A+ and a motor to a ...
2
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0answers
232 views

RF transmission on 314.88mhz

I've been playing around with transmission of RF signals with my pi for a home automation system. So far it has been working great. However, this was just for the 433.92mhz devices. I've managed to ...
2
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0answers
642 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 ...
2
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0answers
2k views

Using Raspberry Pi with Arduino GSM/GPRS Shield

Raspberry Pi Model B GEEETECH Arduino GPRS Shield V1.0 (bought from: bit.ly/1G0KYR7) ^ Similar somewhat to: Seeed's GPRS Shield V1.0 | Link: seeedstudio.com/wiki/GPRS_Shield_V1.0 (has more ...
2
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1answer
1k views

controlling rgb led strip via spi and node js

I recently purchased a pi and a string of individually addressable rgb led lights from shenhzen kapata (actually amazon, but they're the ones who sell it) and I'm trying to control it with my ...
2
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0answers
154 views

Did my Pi lockup or was it halted?

I couldn't connect to my Pi this morning until I turned it off and on again. I did this at around noon, didn't record the exact time, thereafter it connected via ssh. My sys.log state: Sep 18 23:...
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0answers
332 views

Difference between LCD Displays

I was using a Hitachi HD44780 display hooked up to GPIO pins. Sadly, it got damaged and, in a rush, I had to get a different one. It is a ADM1602U serial enabled display. However I don't plan to use ...
2
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0answers
2k views

Getting a Mimo Monitor working with Raspberry Pi

This isn't a question, as I have finally figured out how to get this all to work. I've had to break the links because I don't have enough reputation. sigh. Instructions to use Mimo Monitors UM-710 (...
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0answers
21 views

How to read rPi camera hardware information that which type of camera sensor( imx219 or OV5647) is being used in camera module?

I want to read the camera hardware spec to ensure which type of camera sensor (like imx219 or OV5647 etc) is being used in the rPi camera module for camera module v1 and v2. Is there any method to ...
1
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1answer
123 views

Raspberry Pi Zero W solar power setup

Good day, I have a Raspberry Pi Zero W that I would like to deploy onto a tower that is supplied with 12VDC power from a photovoltaic solar panel. I'm currently looking at powering the Pi Zero W ...
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0answers
37 views

Trouble connecting USB devices with Raspberry Pi Compute Module on custom PCB

I am working with a team designing a PCB that works with the Raspberry Pi Compute Module 3 card. We are having a bit of trouble with the USB ports. The schematic of the USB portion is somewhat similar ...
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0answers
56 views

project with my son

I am doing a pi project with my son. For the first part of the project he built a meccanno car and now we are going to power it. My setup is illustrated here: https://prnt.sc/nb8oph As you can see ...
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0answers
92 views

mlx90640 how to connect

I brought a mlx90640 to connect to a raspberry pi. I have never connected something to a raspberry pi before and I don't know where to connect it or what cables I need. The device looks like this: ...
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0answers
197 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: ...
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0answers
101 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 ...
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0answers
103 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 ...
1
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1answer
453 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 ...
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0answers
80 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 ...
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0answers
350 views

Connecting Pi to an OPC server

I want to connect a Pi to an OPC-DA server to acquire data over an Ethernet connection. Does the Pi's Ethernet port function for non-internet uses? Extra twist... if I want to connect to both the OPC ...
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0answers
72 views

Toshiba TOSVERT VF-S15 VFD and USB001Z

I'm currently trying to drive an AC Motor using the TOSHIBA TOSVERT VF-S15 Inverter and the USB-to-serial communication unit USB001Z. The problem is that the rpi recognized the USB001Z but it seems ...
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0answers
172 views

Hardware setup for LED with external power supply

I am looking for help to use a raspberry pi 3 as a multiple LED switcher. The setup should be: 6 LEDs at 3W, 9.6V and 300mA (each!) a external power supply for the LEDs a breadboard to put everything ...
1
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1answer
296 views

What are the vcgencmd measure_clock 26 and 50?

There are 2 clock sources that are not officially (?) listed with a string id available to the vcgencmd measure_clock command. # for i in {0..255}; do vcgencmd measure_clock $i; done | grep -v "=0" ...
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1answer
2k views

Why is my pi camera v2.1 detected but not taking pictures?

Thanks for your help. Yesterday I moved my Raspberry Pi cam v2.1 with the rpi robot chassis and the camera won’t take pictures. But, the day before, the camera functioned properly. Why do you think ...
1
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1answer
432 views

Raspberry Pi 3 Model B- 3M Touch Systems

I connected yesterday a Raspberry Pi 3 Model B at a 3M touch Systems touchscreen. For installing I followed this tutorial that I found here: Inverted GPIO Touchscreen (Using 99-calibration.conf) What ...
1
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0answers
168 views

Hardware driver for LinuxCNC

Is it possible to create a hardware driver for LinuxCNC on a Raspberry Pi without violating the hardware design philosophy of LinuxCNC (stated here)? If yes, could this driver make use of any ...
1
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1answer
60 views

Record 5.1 Surround Sound

I want to record audio for 5.1 Surround sound. My goal is to use 5 diy shotgun microphones with electret microphones being connected to a rpi that records and encodes to something like ac3 or at least ...
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0answers
23 views

Network accessible screen

Using Raspi, does anyone know of a way to take an old desktop monitor and make it network accessible from any pc? The idea being that you could access it much in the same way you might access ...
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0answers
129 views

Most likely hardware failure to take out WiFi, GPIO, and USB/Ethernet on Pi 3?

Short version: What is the most likely hardware failure that would prevent the USB ports from being powered, the GPIO UART pins from working at all, and the WiFi chipset from being initialized, ...