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Questions tagged [data-transfer]

Data transfer refers to the movement of data from one medium to another. This is commonly achieved via the dd Unix program.

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Uploading the Same amount of data as my Pi Downloads [closed]

I have a Raspberry Pi configured to only pull data from the cloud to present to a screen. Therefore I would expect it to have minimal upload levels. When I check both the download and upload data ...
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How to receive the CAN messages from the ECU via mcp2515 Transceiver connected to Rasberrypi?

MCP2515 connected to Rasberrypi, CANH and CANL Of ECU connected to Mcp2515 transreceiver. using candump can0, I am not able to receive the CAN messages. Can anyone suggest what should be done. Thank ...
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Raspberry Pi sending a file to Windows 11 via Bluetooth

My goal is to send an image from a Raspberry Pi 4 to a Windows 10 / Windows 11 machine using bluetooth and OBEX. So far I can pair the two devices but the Windows machine sees the Pi as an audio ...
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how to read keystrokes in RPi and send something else to PC?

I found this thread and a few others but they don't seem to consider that a keyboard is attached to the pi and that the primary data is sent from it -- rather, the pi just emulates. What I'd like to ...
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How do i send data from one raspberry pi to another using a LAN cable?

If I have 2 raspberry pi's and I wanted to transfer\receive data with a LAN cable connected to them both(do i need a crossover cable?) how would I get the data from the LAN port? with a python script ...
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can we send data or files via wifi from a Raspberry PI using a QT graphical interface to another pc under Windows?

so my Raspberry card is connected to a screen by HDMI, I want to develop an interface using the QT platform under linux to give the order to my Rpi card to send data or files and even to receive ...
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-2 votes
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UART make sure to prevent data loss; choppy binary transmission [closed]

If I use UART to send sensor data from a Pi Pico to another computer (received via /dev/tinyUSB0), does the "default protocol" have any sort of error correction? I guess I don't need to ...
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Can i Transfer Data from one raspberry pi to another over i2c? [duplicate]

Hi, i have following Problem: I have A raspberry Pi 3B+ with a Touchscreen, which uses every Single Pin on the 40Pin GPIO header. The only thing i have is a i2c breakout on my Touchscreen. But i have ...
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How can i set up my owm serial communication between two Raspberrys?

i have following Problem: I have A raspberry Pi 3B+ with a Touchscreen, which uses every Single Pin on the 40Pin GPIO header. The only thing i have is a i2c breakout on my Touchscreen. But i have the ...
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Raspberry Pi | Data Communication | Process Data

I need to receive electricity data from a charge controller with a raspberry pi and process these data on the hmi screen. How can I get accurate information about raspberry pi data communication, how ...
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Putting a PNG on the Pi Headlessly

so I'm sure someone has an easy answer to this. I'm running a Raspberry Pi headlessly - I can SSH in to its static IP address, while it sits in a box so it can't get damaged. Usually I just send it ...
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How to transfer large amount of data (100Kbytes) over SPI?

Related/previous question here. I'm looking to do a data logging project that involves transmitting data from an FPGA to a Raspberry Pi 4 through SPI. The FPGA will transfer 250,000 bytes ...
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Connecting raspberry pi 4 to an FPGA for a data logging system. What is the fastest/most appropriate communication method?

I have a test set-up where an STM32F4 microcontroller is reading in an analogue signal and sending it to a windows PC through UART. The windows PC runs a Python script that interprets the data and ...
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1 answer
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What are the expected write speed for external storage connected to USB 3 (blue) on Raspberry Pi 4 B

I am using an enclosure that has the JMicron JMS567 SATA 6Gb/s bridge as a controller. I am also using the My Book Duo which has a WD controller. Both report same speeds. File systems are ext4. Both ...
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"Bad message" when trying to access a directory on external hard drive

I'm running a media server using a Raspberry Pi 4 with an external hard drive connected via USB 3.0. One issue I've been seeing for a while is "Bad message" returned when I try to ls or stat ...
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MDADM RAID 1 and Samba on gigabit ethernet only using 500mbps

I am using mdadm, samba and RPi4 to create a local nas for my house. It seems to work fine but when I transfer a file from the nas to my local machine, it doesn't use the full 1gbps and only uses ...
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Slow UART communication between Raspberry Pi Zero and 4B using pyserial

I'm testing serial communication between two Pi's (Zero -> Pi 4) with Python pyserial library. I am using Zero as camera with preprocessing and sending preprocessed data to Pi 4 via UART (/dev/...
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How to clone a Pi that has flash instead of an SD card

I'm working with the Pi CM3+, which has 32GB of flash memory (at least my specific one does). While of course it needed an image on an SD card to initially boot, since then it has been operating ...
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Is there a way to use the USB-C port as power and for something else?

What I mean by something else I mean connecting my external ssd (uses usb-c) to my pi rather than the usb ports as those are slower. I have read on usb-c Port of RasPi 4 used for anything else but ...
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Slow NTFS write speeds, on external USB drive?

I have my 4GB Pi4 set up with automount and have an NTFS formatted USB3 hard drive, connected via the USB 3 port. Looking at the driver via the mount command: /dev/sda1 on /media/Seagate_sda1 type ...
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How would I send files to Raspberry Pi through bluetooth without touching the Pi?

I want to be able to send code files to my Raspberry Pi Zero W from my Mac or Android phone, without needing to go do anything on the Pi itself. I was able to pair and connect to my devices with ...
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2 votes
2 answers
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how to transfer file between two RPI over Wi-fi?

Hello I received two Pi 4 for Christmas. It is the first time I use RPI, I have succeeded to turn them on and to connect them to my local wifi ! I am a a beginner and I wanted to start with a simple ...
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how can i get real time data from the raspberry pi sensor to my android app?

how can I display real-time data from the raspberry pi heat sensor into my android app made with the android studio (not an android app build on a raspberry pi ) every time the sensor measures a ...
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4 votes
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Does the Raspberry pi 4 have USB 3.0 or 3.1?

I've seen many, varying reports on the natives USB ports on the Raspberry Pi. Some say that the Pi has 3.0 ports, while others say that the pi has 3.1 ports. In many applications, the distinction is ...
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4 votes
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Raspberry Pi 4 local network for territories without access to the internet

Is there a way to create/enable a local network between a Raspberry pi and mobile devices? I am thinking of a project which will use the Raspberry pi to host data which can be accessed using multiple ...
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2 votes
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Can I connect more than one sensors to a raspberry pi wirelessly [closed]

I am getting a raspberry pi for my birthday and decided to do a little research. While following a few tutorials I noticed that they all are using different raspberry pi machines for each project. I ...
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How to connect raspberry pi to cellphone tower and communicate with it by Android phone [closed]

I need to communicate to my raspberry pi with my android phone via cellphone tower. For example,a raspberry pi is connected to nearest base station, if i enter into that base station's range i want to ...
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1 vote
1 answer
263 views

Stream data between load cell or HX711 to RPI

I built a scale with my RPI using a standard load cell and HX711, is there a way to stream the data from the load cell to the RPI either from the HX711 or from the load cell itself to the HX711? The ...
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-1 votes
2 answers
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Raspberry Pi 4, terrible performance at the USB3 port

I have installed my Raspi 4 freshly today (latest Raspberry Pi Os). The SD Card performance is kind of okay (~40 MB/s write). However the USB3 performance is terrible. I have plugged in a mobile ...
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2 answers
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Importing raspi data from sd card to computer

My sd card with raspbian installed is not displaying the data stored on it, such as files in the home directory etc. Inserting it into a computer causes the RECOVERY drive to show up, which looks as ...
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how to transfer file to Windows 10 PC using SFTP command?

I'm trying the following command from the Pi to the PC (169.254.112.124): sftp pi@169.254.112.124:/C:/Users/Desktop/testtest.xml But I get this error: ssh: connect to host 169.254.112.124 port 22:...
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3 votes
2 answers
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Hosting LAMP on SD-card in RPi now - would like to move whole database and website to External USB 3.0 SSD

.I am hosting this website on the RPi 4 - 4GB Ram model. I'm guessing the google PageSpeed insights ranking score is kinda ok right now (it ranges in the middel with a score of 56) - try and test it ...
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1 vote
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Send data from PC to RPi although theyre not in the same LAN

i'm planning a school project that should represent a two-factor authentication. I already made a user interface to type in information to log in like email address and password. My plan was to ...
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1 vote
1 answer
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Receive data on the raspberry with c# using mono

I want to send strings between the raspberry and a windows computer via serial and with c#. This works from the raspberry to the computer as shown below. In the picture you can see that I have sent a ...
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1 vote
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How to receive serial data with c# on a raspberry with mono [duplicate]

Hello I want to make a program for the computer and the raspberry, this program must ensure that the raspberry and the computer can communicate via serial. I have already found a code that does this, ...
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1 vote
1 answer
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PedalPi, lag when piping in data

I am modifying a pedal pi (link here). I split the input program from the output program. For simplicity right now, that all it does. The standard out from my input program is being fed to the ...
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3 votes
0 answers
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Connect with VNC to RPI 3B+ via Bluetooth

I want to do VNC via Bluetooth between my Raspberry pi 3b+ and an android phone. Some forums say that bluetooth technology is so slow to connect VNC via a DUN network, but I was doing some research ...
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-2 votes
1 answer
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Bootable USB or Pendrive are not detected in Raspberry pi 3B+ for data transfer or format

I want to copy a file raspberry pi 3B+ to my Desktop machine. I had plugged the USB pen-drive in raspberry pi 3B+. But pen-drive is not recognized. Did I missed anything as in case of pi? Thanks in ...
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1 vote
1 answer
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How to connect a geophone to RaspberryPi?

I'm a seismic geophysicist and would like to attach a geophone - which is basically a transducer - to any type of RP. The types and costs of geophones are both variable and extensive (in some cases). ...
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1 vote
1 answer
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Share data between different

I'm building a floor heating control with raspberry pis. Until now I have two Pis working, one which controls the valves via relays and another which works as "central" with a webinterface to adjust ...
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0 votes
1 answer
178 views

Why Raspberry Pi Zero W is missing to log data constantly every second?

I'm doing a project where I want to record IMU (Inertial Measurement Unit) readings. I want to use pretty high sampling frequency and I'm using Raspberry Pi Zero W to send PWM signal of 800Hz to ...
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2 votes
1 answer
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Raspberry Pi 3 + USB data modem as a Wi-Fi Router

I have a USB data modem (Huawei E3131) and a RaspberryPi 3B+. I would like to use the Pi as a Wi-Fi hotspot. Pi connects to the internet via USB data modem and creates hotpsot for other devices. So, I'...
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1 vote
1 answer
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Slow Transfer Speeds When Multiple Raspberry Pi Zero Ws Connected Over WiFi

I'm working on a project that uses the pi camera module and 35 or more Raspberry Pi Zero Ws to take pictures and send them back to a central computer. Everything works fine with just 1 Pi connected, I ...
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2 votes
1 answer
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How to setup pi to save files on PC directly via USB?

So my Pi has very little processing power. I need to use my PC for it. So how do i make a quick automatic transfer of files generated in a folder from Pi to PC (doing it over FTP might be a way but is ...
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1 vote
0 answers
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Read data from a balance via RS232 port using rs232 to usb converter cable in rapsberry pi

I am a beginner to this, I have a balance (scale) that I need to read the data (weights of material) from. Data will be read every 10 seconds and I have looked up RS232 codes in here and utilised ...
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0 votes
2 answers
3k views

Uploading a file via SFTP from a raspberry pi to a remote server. From the command line

I need to upload files from a headless raspberry pi to a remote server. A simpfied example: The file to transfer /tmp/test.html Remote location: something.com Port 22 Username: user1 Password: ...
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2 answers
3k views

Raspberry Pi with USB 3 (or 3.1) and enough power to use 2 drives

I bought a new camera which writes a lot of data onto SSDs, which I then would like to transfer onto HDDs. I thought about using a Raspberry Pi, but I was told it doesn't have enough power for a ssd ...
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1 vote
1 answer
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Handle data while filming with rPI [closed]

We will buy the BMPCC4k (This means 500GB/hour on a ssd), as we are a low/no-budget production, we can't have someone handling data. I had the idea to use a rPI3+ to use for this. But I'm not sure if ...
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0 votes
1 answer
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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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2 votes
2 answers
630 views

Using /mnt vs /media for Transmission storage on external hard drive

I was wondering if it makes a difference to mount an external hard drive at /mnt vs /media. I'm making a Transmission seedbox using an RPi 3b+, and different tutorials are suggesting different things....
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