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Questions tagged [peripherals]

Peripherals are devices connected to the Raspberry Pi, but external from it.

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PH-4502C pH Sensor Calibration and ADC using MCP3008, PCF8591, and ADS1115

I have a pH meter (DIY-4502C) hooked up with Raspberry Pi. However, the instructions to calibrate is in Chinese and seems outdated. Does anybody know how to calibrate it for measuring pH4-7?
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1answer
151 views

Single channel SPI DMA

The documentation on the SPI peripheral says: Two DMA channels are required, one to read from and one to write to the SPI. Is this necessarily true? I have a device where I need to write a few ...
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1answer
228 views

How to use the DMA-DREQ/PANIC threshold of the hardware-PWM

I'm using the hardware PWM that is described on page 138 of the BCM2835-ARM-Peripherals document. The description of the DMAC-register (page 145) indicates that one can set the FIFO-threshold at ...
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2answers
172 views

How to interface to a Pi without knowing its IP or having a large HDMI monitor?

I wish to access a RPi's shell, but I do not wish to lug around some big display and ideally 120 volt power wouldn't be required. A Linux or Windows laptop are acceptable or maybe some other typical ...
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1answer
43 views

ADF support for scanadf on HP scanner

I have installed SANE and I'm trying to scan pages with the ADF (automatic document feeder) of my HP ScanJet 8250. I found scanadf, but it does not use the ADF for scanning. I now read at the end of ...
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0answers
24 views

Simple wireless camera with API recommendations

I have a whiteboard and want to build a setup where I can press a button and have a picture of the whiteboard delivered to google drive. I have a raspberry pi that acts as a little toy server for ...
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2answers
226 views

Raspberry Pi 3B+ BLE peripheral : Android can't retrieve services list, OK with iPhone and Win10

I try to make a Raspberry Pi 3B+ act as a BLE peripheral. I downloaded latest version (5.50) of bluez stack here : https://git.kernel.org/pub/scm/bluetooth/bluez.git. I execute provided examples in /...
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2answers
11k views

Raspberry Pi Mini-fan not working

I have installed a mini-fan (cooler?) with a heatsink in a Raspberry Pi Model B+ but it is not working. I mean, it is not moving. Does it only turn on when the processor is hot? Do I need to install ...
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2answers
468 views

Stream remote pi+rasp camera to another computer?

Hi is it possible to stream the video feed from a pi camera (3 b+ model) across a LAN to another computer running Linux? My idea is to see if pi can be used almost like an IP security camera where I ...
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0answers
396 views

Dalsa Genie GigE vision camera for Raspberry Pi

I am setting up a camera with my Raspberry Pi to test an optical layout on a high altitude balloon mission. I am using a Raspberry Pi model B. The camera will be required to take a still photo every ...
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2answers
77 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 ...
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2answers
139 views

Ejecting USB dslr camera

I'm using gphoto2 to capture images with my nikon dslr connected to a raspberry Zero W My problem is that the camera stayes awake as long as there is a usb connection. How can I eject the USB ...
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1answer
72 views

Wiring that won't damage my pi [closed]

A while ago, I decided to wire up a Raspberry Pi (Zero W) to a few peripherals, but it stopped working shortly afterward (not entirely, but I think it was undervolting the power rails). I had ...
0
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1answer
26 views

pxe boot works but USB ports don't

I'm running a PXE server that provide the boot files perfectly. The raspbian jessie start well but the mouse and keyboard doesn't work. to create the respo, i've done a rsync on a working image ...
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1answer
36 views

Only allow a specific peripheral to be connected to a USB port

I am turning my raspberry pi prototype device into a market product. The data and the program running on the pi must be protected. But we have a USB webcam attached to it (provided by us, hence we ...
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1answer
46 views

Wiring on RPI3 when connecting two peripherals - microcontrollers simultaneously

I am currently having an ADC(MCP3008) connected to a rpi3, using the following wiring map, in order to read data from analog sensors. MCP3008 -> RPI3 VDD -> 3.3V VREF -> 3.3V ...
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2answers
3k views

Control iOS device from Raspberry Pi?

I am actually wondering if there are any ways to control an iDevice like the iPod Touch or the iPhone, from the Raspberry Pi. I'm not talking about controlling the whole thing, but only the Media ...
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6answers
13k views

How can I determine if a given touchscreen is compatible?

I want to attach a touchscreen to my Raspberry Pi. While doing some internet search about this, I found out that this is not trivial, because not all touchscreens are compatible. How do I find out, ...
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10answers
35k views

Is there a way to connect to a PSTN?

I'd love to run Asterisk on my Raspberry Pi. Does anyone know how I could connect to the telephone network? Obviously, PCI based cards aren't going to work.
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1answer
764 views

SPI DMA and continuous transfers

I'm building a project using the MCP3914 8-channel analog front end (ie ADC) device connected to the Raspberry Pi's SPI peripheral. The device has a continuous read mode where you request the value ...
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0answers
31 views

Do older raspberry pi accessories (specifically cameras) become obsoleted and experience reduced-price sales to the public? [closed]

I have an older Pi B with 512MB of RAM. I'm considering volunteering to help a local publicly funded park with a raspberry pi nature camera project, but I anticipate no funding from them, at least to ...
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2answers
616 views

Raspberry Pi (Low) Power - Damage?

If the Raspberry Pi B+ is not receiving enough power and I try to use it, will it damage my Pi or peripherals?
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2answers
20k views

Can the Pi Emulate an HID device with via USB? [duplicate]

Does the Raspberry Pi model B+ have the capabilities of acting as a Human Interface Device (HID) with no extra hardware (other than a USB to USB cable)? I saw this question but it was about ...
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2answers
16k views

Can I use the screen/keyboard of a laptop with the Pi?

I have a very old, not very fast laptop. (The screen and keyboard work well, but the hard drive is dying and the RAM's getting slow). The other day an idea struck me: could I use the screen/keyboard ...
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1answer
387 views

Piface with Scratch. Could not find MESH session

I've downloaded and installed the latest versions of everything. Followed the instructions for setting up Scratch to use Mesh. It says its using IP 127.0.1.1. From the terminal I ran 'pifacedigital-...
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5answers
23k views

How can I automatically mount USB hard drives (regression)?

Recently (perhaps due to an update?) my hard drives no longer automatically mount. I have a USB hub attached to the Pi, with a wifi card and some hard drives attached to the hub. The hard drives are ...
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0answers
51 views

How get old Apple bluetooth keyboard and mouse recognised

I have an old Apple Bluetooth keyboard and mouse from about 12 years ago. They can still connect to my newer Mac laptop, but the Pi 3 bluetooth adaptor cannot see them at all. According to Apple's ...
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0answers
176 views

SUID executable doesn't work for `/dev/mem` access

Here is explained how to gain access to the peripheral without being root. I've just tried in my environment (Raspbian Stretch, RPi2, Qt5.9) in this way: int main(int argc, char *argv[]) { ...
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2answers
688 views

LCD with RTC and GPS

I have purchased a LCD board, a real time clock board, and a GPS board. I have soldered the LCD onto the breakout board as instructed and put the realtime clock together following the tutorials. At ...
2
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1answer
4k views

For communicating with a modbus rtu slave using rs485 to usb converter, does Raspberry Pi require any configuration?

I have a modbus slave device and a rs485 to usb converter. I used the converter and successfully read data from the slave device with my laptop but when I try to use it with the Raspberry Pi I am ...
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4answers
7k 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?
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1answer
2k views

Can the new raspberry pi B+ act as a usb sniffer?

I am trying to capture data from a computer going to a USB peripheral. I think the previous raspberry pi (model B) couldn't do this because it could not act a USB slave. But can the new raspberry pi B+...
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1answer
330 views

Soldering Components onto RasPi headers

I am trying to use the P5 header on the RasPi for soldering a switch to act as a safe shutdown button. But I am unable to solder the connections onto the headers. The reason for this, I believe, is ...
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2answers
3k views

Interfacing with a Winbond W25Q64BV flash chip via SPI

I'm trying to interface with a Winbond W25Q64BV flash chip via SPI. I started off by testing it on Arduino (target is a Raspberry) as I found a few implementations before I got started. Most notably ...
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2answers
17k views

How to use a DS18B20 temperature sensor in my Pi?

I have a few DS18B20 temperature sensors. These are normally used in Arduino projects, but I don't see why not to use them with a Pi. There is a software called DigiTemp that seems to drive the device ...
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3answers
5k views

How can I have multiple USB peripherals?

How can I have multiple USB peripherals connected to my Raspberry Pi at once? For example, I want to have a keyboard and a mouse plugged in at the same time.
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1answer
1k views

Recording landline phone calls

My cell phone is recording all phone calls (using Automatical Call Recorder on Android) and this has helped me a lot of times (both because I didn't hear something very clearly or as evidence for ...
43
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6answers
47k views

How to attach an Arduino?

The Arduino website sums it up as Arduino is an open-source electronics prototyping platform based on flexible, easy-to-use hardware and software. It's intended for artists, designers, hobbyists, ...
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2answers
17k views

How do I connect/disconnect a flash drive from the command line? [closed]

I am running Debian. I can plug in and view the contents of my flashdrive using filemanager under X, but how can I do this from the command line, and how can I safely remove it when I am done?
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4answers
6k views

To what extent can the device be used without a mouse?

I'm sure I read somewhere that the RPi can be used without a mouse, but is this 100% true? (I am planning on using debian.) To what extent can I control it without a mouse? Will I be able to do ...
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6answers
23k views

How to measure temperature?

What can I connect to the RPi to measure temperature? I think devices connected to the I²C or SPI would make most sense. Here is a question about DHT-22 and other 1-wire devices. But at this stage it ...
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2answers
5k views

RPi 3 Model B: PSU, Measuring Voltage & Amps

I cannot, for the life of me, get enough power into my pi so the mouse & keyboard are operable. I have a RPi approved usb hub (Belkin: Hi-Speed USB 2.0 7-Port Hub) powering the mouse and the ...
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2answers
1k views

Use Android phone as display for RPi3

I have Raspberry Pi 3 (connected to LAN and Internet via Ethernet cable) with: Wi-Fi hotspot settled up and working; TightVNC server running at startup. I can connect to it using my PC or Android ...
14
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2answers
12k views

What advantage does the Pi-Face addon board bring to the Raspberry Pi?

I have come across the Pi-Face addon board and am wondering what additional capabilities this unlocks for the Raspberry Pi. From the website: The 'added value' we want to provide is the hardware ...
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4answers
38k views

What cameras can I connect to the CSI connector?

The model B comes with a MIPI Camera Serial Interface connector, but it's hard to find a store that'll sell you a chip or camera to interface with it. The only thing I've found so far is the the ...
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4answers
9k views

How can I use a PC laptop or Mac Book to run a Raspberry Pi?

I want to let some smart programers play with a few Raspberry Pi boards at an event I am running. They will all have laptops and internet access. We probably won't have access to keyboards and screens ...
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1answer
4k views

Slow file transfer to USB thumbdrive

Currently my files are transferring at a speed of 10 kilobytes/s or less to a thumbdrive that is Fat32 formatted. I have a pretty stock Raspian install, and I've done an rpi-update. I am using a ...
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2answers
16k views

Barcode Scanners compatible with Raspberry Pi

I would like to buy a barcode scanner to use with Pi, so which one will be compatible with Pi..?? Something around $50 would be great, like the Barcode Scanners we use at POS (Point of Sale), ...
2
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1answer
1k views

Shutdown Button for Raspberry Pi with HiFiBerry Amp+ HAT

I am able to create a shutdown (and reboot) button for a plain Raspi harnassing the fact, that shorting Pin 5 to GND will reboot the Pi if shutdown. However, when adding the HifiBerry HAT things ...
2
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5answers
193 views

Use Rasberry Pi's Usb Ports for Broken Computer

The usb ports on my macbook pro are broken, so I thought that it would be possible to connect it to my raspberry pi over a local wifi network (or something like that) so that I can use usb devices, ...