Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [hardware]

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

0
votes
2answers
20 views

MCP3008 minimum current(resistors value)

I want to measure some battery voltage in a range 0V-4.2V with MCP3008(VDD=VREF=3.3V). I used a voltage divider with R1=2.7MOhm and R2=8.2MOhm, but it didn't return correct value, I used resistors ...
-1
votes
1answer
26 views

How to connect a M24 Multi Pin Connector to a Raspberry Pi

How do i connect a M24 Multipin Motor Plug Wire that is coming from a brushless motor to a raspberry Pi , I know i need to use an ESC however the wires attached to my brushless motor is a multipin ...
1
vote
1answer
26 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 ...
0
votes
2answers
276 views

sense hat sample “snake” returns “event device not found” error

My "sense hat" sits ontop of a raspberry pi 3. I've completed the installation instructions found at https://www.raspberrypi.org/documentation/hardware/sense-hat/ lexu:~> sudo apt-get update lexu:~...
1
vote
1answer
240 views

What Circuit Should I Use to Hardwire Raspberry Pi to Doorbell?

I am trying to connect my raspberry pi to my hardwired doorbell in order to send a text message when the doorbell button is pushed. I have successfully sent the text message using a button connected ...
7
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?
1
vote
1answer
374 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
15 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 ...
0
votes
0answers
44 views

Raspberry Pi 3B+ No Boot (Hardware Failure?) [duplicate]

Between two identical out of the box RasPi's 3B+ (same supplier and model), one of them boots flawlessly with SD Card running 2019-04-08-raspbian-stretch but the other refuses too with all the same ...
1
vote
1answer
280 views

Multiplexing CMOS Cameras

How is it possible to multiplex 9 CMOS Cameras with raspberry pi to generate 9 images at a time?
1
vote
1answer
322 views

Accidentally shorted C97 on the Raspberry Pi with a washer

I accidentally dropped a washer and unfortunately it landed on the C97 capacitor. I think that shorted the pi out. The ACT and PWR lights are now solid red and green, whereas it was blinking ...
1
vote
3answers
52 views

Raspberry PI automatically turning on after I put it to sleep using GPIO

I implemented a simple script (well, someone else created it, just installed it hehe) to shutdown my raspberry pi when a button is pressed that connects pin 5 and 6 (I think those are the numbers - ...
1
vote
3answers
28 views

Raspberry Pi 3 Model A+ Faint green pinprick light steady flashing

I just loaded an SD Card with Raspbian lite for the Pi3 Model A+. It does the normal rainbow screen splash, followed by the 4 raspberries and a blinking cursor underneath. The pi never completes its ...
0
votes
1answer
25 views

LoRaWAN connection between three Raspberry Pi 3s

Are LoRaWAN devices able to transmit compressed/zipped JSON files which are 5-10 Kb big? Furthermore I've been reading up the LoRaWAN technology to get a better understanding. I would like to have 3 ...
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 ...
0
votes
2answers
1k views

Waveshare 4inch LCD drivers, error after installation: PANIC: VFS: Unable to mount root fs on unknown-block(179,2)

Problem I am attempting to install the drivers for this Waveshare 4inch LCD (A) touchscreen; however, after I have installed the drivers and reboot I receive the error (displayed in the HDMI monitor, ...
0
votes
1answer
41 views

USB network interface not showing up on Pi 3

I am trying to attach a network interfaces (Ethernet Port and mobile Broadband) to my Pi through USB. When I do this on my Pi 1 or Pi Zero it shows up and works without a hitch, but with the exact ...
0
votes
2answers
975 views

How to lower screen brightness on 2.4 inch monitor

I have a 2.4 inch adafruit monitor for my rasberry pi, connected through the GPIO pins, and I have a problem with setting the screen brightness. https://learn.adafruit.com/adafruit-2-4-pitft-hat-with-...
0
votes
1answer
73 views

Why is my Raspberry Pi 3 endlessly rebooting?

I have a RPi 3 with OpenELEC for more than a year. Last week it suddenly started to endlessly reboot a few times per minute, even if I leave it on the main (home) KODI screen. My RPi uses the original ...
0
votes
1answer
913 views

Hardware PWM for Python 3.5 or higher?

I am developing a camera tracker to follow objects identified via OpenCV in a dedicated environment on mt Pi3. Currently the two SG90 servos are controlled by software PWM using RPi.GPIO - but the ...
0
votes
1answer
2k views

FS80H USB Fingerprint Scanner in Pi 3

I have a Futronic (model FS80H) USB fingerprint scanner. I am currently trying to get it to work with a Raspberry Pi. On their website they mention that on Linux it doesn't use any kernel mode ...
1
vote
2answers
858 views

Waveshare AD/DA Expansion Board

So today I recieved a Waveform High Precision AD/DA Expansion Board for me to use with my Pi3. Prior I was using an MCP3008 ADC chip to measure voltages, and I just wanted to see if I could get ...
3
votes
3answers
463 views

Does Pi Zero Have built-in-audio component?

I am looking to buy a Raspberry Pi Zero for my retro gaming project. I am asking wherher the Raspberry Pi Zero has any built-in internal audio speaker in the chip itself or not? If there isn't, is ...
2
votes
1answer
479 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 ...
3
votes
1answer
456 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, ...
1
vote
1answer
1k views

Any way to interact between node.js and python [closed]

Any way to interact between node.js and python. I wrote a IoT dashboard using Node.js, then want to add a 1602 LCD screen to Raspberry Pi using python, so any way to interact between python and node....
0
votes
2answers
1k views

SSI from absolute Encoder

I want to connect an absolute encoder that has SSI interface to a raspberry pi. Is it possible? Do i need some additional hardware?
1
vote
1answer
1k views

Problem with ESC, brushless motor and Raspberry Pi

I have connected an ESC (an electronic speed control) with a battery and a brushless motor. The Raspberry is connected to the ESC to control it. I know - when I turn on the program that is on the ...
1
vote
2answers
47 views

Got 3 heatsinks with my raspberry pi?

I got 3 heatsinks with my raspberry pi 3 B+ which was ordered via my school. I got 2 small ones (both the size of the Ethernet chip) and a big one(size of SoC). So far websites always tell me to put ...
0
votes
0answers
29 views

HDMI port is not working

I have been using an RPI3B+ for around 2 months . I used it remotely most of the time. Recently, when I was trying connect it with a monitor via HDMI to VGA converter , it didn't work at all. I ...
1
vote
0answers
55 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 ...
-2
votes
1answer
46 views

Ensure/lock a program to run on Raspberry Pi only?

Are there any characteristics/ lock available so that the program would fail to run on any other device except Raspberry Pi. I have thought about using GPIO with external circuits but would prefer ...
3
votes
2answers
2k views

MPU6050 Python Library

I would like to use my MPU6050 gyro/accelerometer in some projects but I can't find a good library. I would prefer it to be in python but can deal with C++. I want something where I can do a simple ...
0
votes
0answers
28 views

Made a Pi Zero W into a print server for a Dymo 4x6 label maker. However, when I added the printer via Windows, the format is incorrect

And I have no idea how to fix it. The microsoft ipp class driver only has format options for A4 and letter, no 4x6. It prints fine on my iphone but I really would like to be able to print via my ...
1
vote
2answers
51 views

How do I add on/off button to Raspberry Pi Zero?

How do I add an on/off button to a Raspberry Pi Zero board? I am new to the platform and kindly ask for instructions suitable for a novice. Thank you.
1
vote
1answer
76 views

Repairing a Pi-top

I recently had the good fortune to find most of a pi-top that was being given away at the Cambridge Computer Museum. What you see in this picture is the entirety of what I picked up. (I previously ...
1
vote
1answer
750 views

High iowait when running Deluge daemon

I have a RPi 1 Model B+ running the 11/25/16 release of Raspbian Jessie Lite. It is running off a 64GB UHS 1 Class 10 Micro SDXC card. It is connected directly to my router via ethernet. I have it ...
3
votes
0answers
47 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 ...
1
vote
1answer
1k 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 ...
0
votes
4answers
4k views

Powering a RPi with +24VDC for an industrial application

I need to Power an RPi from a +24VDC industrial power supply. The RPi is mounted in a DIN-rail mounting box, in which there is plenty of space. The +24VDC is quite reliable and does not vary by more ...
0
votes
1answer
781 views

MLX90615 Sensor for Raspberry Pi 3 Model B

i have connected mlx90615 Thermometer module to my raspberry i2c pins but i was not able to find any code or guidance on how to receive measured temperatures from the sensor (i2c bus) but there are ...
1
vote
2answers
59 views

Peripherals power usage

I am trying to measure the power usage of a Raspberry Pi peripheral, say a temperature sensor, and compare it with wall power input to the Raspi. Is there a device that measures the power a ...
1
vote
0answers
45 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: ...
0
votes
0answers
23 views

CM3 Two Camera Previews, one “hangs/freezes”

First time forum poster here, but I hit a wall in debugging this issue. Thank you in advance for any input! Issue: I am using two instances of raspistill preview for two hours on two Pi Cameras V2 ...
0
votes
1answer
56 views

Raspberry Pi not booting, even when I install NOOBS on a formatted usb

I have this problem for a while now, the rpi doesn't boot. The red led is on but the green led never opens. I have formatted the SD card and re-install NOOBS on it but again I can't boot it. Before ...
1
vote
1answer
45 views

P5 code optimisation for raspberry Pi

When I try to execute this sketch that is based on a face recognition algorithm it really lags on raspberry, whereas when run on different devices (macbook pro and notebook), it runs smoothly. You can ...
-1
votes
1answer
49 views

Powering a line following robot with a power bank. Any thoughts?

I am currently wondering for a college project, if it'd be possible or not to use a power bank to build a line following robot and power both the pi 3b+, the waveform motor driver hat with 2 dc motors(...
0
votes
2answers
98 views

Raspberry Pi newcomer questions

I have the Raspberry Pi model b+ 512mb and 8gbs noobs edition. I was wondering what basic programs i should install like a way to eject usbs. I am mostly used to windows but i do like using ubuntu ...
6
votes
2answers
4k views

Baremetal Forth for Raspberry Pi?

I was strongly considering writing a Forth implementation designed to run bare-metal on a Raspberry Pi, that is, booting directly into Forth with no OS. I thought this might be of interest to the ...
0
votes
1answer
47 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 ...