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Questions tagged [hardware]

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

148 questions with no upvoted or accepted answers
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4
votes
0answers
118 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
235 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
117 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
375 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
votes
1answer
467 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
543 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
70 views

Hardware controlled RTS on a Pi4 not working accurately

We need to use RS485 to talk to one of our custom tools. We need to use hardware controlled rts/cts. I've read so many articles about this but nobody ever says it works for them with fast timing and ...
2
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0answers
92 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
54 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 ...
2
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0answers
283 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
46 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
1k 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
545 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
206 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
votes
1answer
111 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
149 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
359 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
votes
1answer
90 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
964 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
votes
1answer
226 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
236 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
votes
0answers
665 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
votes
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
votes
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:...
2
votes
0answers
336 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 (...
1
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0answers
36 views

Is it still safe to use my pi? Missing component (capacitor?) near USB port

I dropped my pi and what I think is a capacitor has come off. What effect will this have on the USB ports, if any? Can I get away with just not using them?
1
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0answers
48 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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0answers
57 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 ...
1
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0answers
130 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: ...
1
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0answers
241 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: ...
1
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0answers
110 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 ...
1
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0answers
111 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
vote
1answer
564 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 ...
1
vote
0answers
104 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 ...
1
vote
0answers
376 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 ...
1
vote
0answers
87 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 ...
1
vote
0answers
217 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
vote
1answer
378 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" ...
1
vote
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
vote
1answer
506 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
vote
0answers
175 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
vote
1answer
67 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 ...
1
vote
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 ...