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Questions tagged [raspberry-pi]

The Raspberry Pi is a low cost, credit card sized, ARMv6 instruction set based PC device developed by the Raspberry Pi foundation.

2
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1answer
22 views

Refactoring coordinates for Minecraft Pi buildings written in Python

I'm fairly new to coding and I wrote this script in Python for a house with a roof in Minecraft Pi. I've found different ways to write the coordinates to make the code base shorter, but I'm wondering ...
1
vote
0answers
44 views

Optimising fingerprint scan compare process

I'm creating some python script in Raspberry Pi to running fingerprint scan and compare it against database. Using this library, on raspberry start this script will get all the database record for ...
5
votes
1answer
143 views

Runner 1-bit game in Python like the offline chrome dino

I made this little game to test if my Nokia 5110 screen can handle games. As in handle many frames per second/game loops. I am using a library made for this screen called Adafruit_Nokia_LCD These ...
3
votes
0answers
58 views

OLED display application for Raspberry Pi

Python script to output status information to a small OLED screen connected to a Raspberry Pi. I'm relatively new at writing python so although the app works and outputs correct information it is far ...
6
votes
2answers
217 views

A baby monitor using a Raspberry Pi to send push notifications when triggered by noise

I have a Raspberry Pi 3B with a USB microphone. I have used a combination of Bash and Python scripts to detect noise levels above a certain threshold that trigger a notification on my phone. The ...
6
votes
1answer
34 views

Signal output on Raspberry Pi that acts as input for FPGA

Problem I'm writing a verilog program that does the trapezoidal integration method (where a review is also welcome, wink wink). But turns out you need input for these kind of things, so in the overly ...
4
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0answers
183 views

Uploading captured video to Google Cloud Storage

My program intends to capture video streams (in mjpeg) with OpenCV and upload the captured frames into Google Cloud Storage for later processing. I am expecting to capture ~15-20 frames per second and ...
12
votes
3answers
346 views

Raspberry-Pi morse-code LED

I am new to programming, python and raspberry-pi, but I am keen to learn more. After doing a few basic tutorials I though it might be best to give it a shot and just come up with a task in which I ...
8
votes
2answers
121 views

Measuring the speed of a river

I already improved my program with the suggestions of @Mast. As requested by him I re-upload the code in English so we can check it out together. But before I'll explain a little bit what this ...
3
votes
1answer
230 views

AppJar number pad and keyboard

I am currently working on a python program with appJar. This program is made for Raspberry, as I wanted to create a program that is portable. I wanted to insert a virtual keyboard into it, by using ...
9
votes
0answers
47 views

Python RPI button board

My project consists of a Raspberry Pi 2B V1.1 connected to a number of push-buttons via GPIO pins. The goal is to create a panel of buttons, allowing the user to make a selection of one or more items ...
7
votes
1answer
161 views

Raspberry Pi Heating Controller

In "most" (my experience) older UK houses, Central Heating and Hot Water both come a gas boiler. They are controlled by a programmer, to come on at different times, which is effectively just three ...
19
votes
1answer
276 views

Raspberry PI controllable Christmas Tree

After having the scales, thermometer and a coffeemaker connected to the internet, it is finally time for Christmas Tree to become smarter. Hardware 6ft Christmas Tree An addressable WS2811 LED strip ...
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vote
0answers
83 views

Golang: Improving communication between workers

Came back to the software side of my night vision security camera project after taking some time to learn about electronics and I found it a bit hard to retrace the logic of my program. I have a ...
42
votes
6answers
5k views

Raspberry PI controllable car (code for a 6-year old)

I've been trying to show my 6-year old daughter a way to build and create a simple toy car. We've got a 4-motor chassis kit, Raspberry PI and a motozero shield that can operate these 4 motors. We've ...
3
votes
1answer
57 views

Indeterminate progress bar with Raspberry Pi

I am writing program for Raspberry Pi that will show indeterminate progress while user waiting. The program will start automatically and will be killed by another shell script. Here is what I have at ...
3
votes
0answers
398 views

Using arecord through subprocess to record in Raspberry Pi

I am using arecord through subprocess to record in raspberry pi : press joystick button to start recording and press button again to stop recording. I am really a noob in programming. ...
6
votes
3answers
382 views

Measure distance using echo signal from Ultrasonic sensor

I was not happy with original code for Ultrasonic sensor and decided to write my own implementation. I managed to do this, but it still looks weird. Could you help me to improve it? ...
6
votes
1answer
319 views

Getting prices of crypto coins

I have been working on this Raspberry Pi project for a while. It uses the Poloniex API to get prices of crypto coins and it shows the prices on multiple OLED displays. The displays use different i2c ...
3
votes
1answer
142 views

One to One network file transfer code C# socket based

I have been developing a piece of software which has a central computer talk to many smaller nodes with a star network configuration. Each smaller node sends a file around 5MB in size once the central ...
1
vote
0answers
59 views

Pygame Slideshow2 that uses Curses with SSH to pause and move Pictures

I have added a few new features to Pygame Slideshow that includes using curses that works with ssh, a way to move pictures to a different directory while viewing them, a pause, and redisplay mode. A ...
6
votes
0answers
470 views

Motion detection program for snapping of images

I'm doing a motion detection program where it snaps an image when it detects movement and snaps an image of the person's face if in view while this is all recorded and sends it all to Dropbox. It's ...
12
votes
1answer
3k views

Streaming H264 video from PiCamera to a JavaFX ImageView

I'm currently working on a robotics application where a video feed is being displayed from a Raspberry Pi 3. I've been working on a way to stream the video directly into JavaFX (the rest of the UI is ...
2
votes
1answer
252 views

Pulling time and date from the internet

I'm pulling the time and date from the internet because when the user turns the Raspberry Pi off, it loses its date and time settings and unfortunately Windows 10 IoT is very slow to correct it. I ...
3
votes
1answer
73 views

Webcam frame splitter

I wrote a camera streaming app for pizero. Since the pizero is too weak to do any video encoding I am using it to just capture usb webcam frames (mjpeg format) and forward them over udp to a ...
7
votes
1answer
175 views

Python siren control

Below is some code I've put together to contol a siren for a fire service. It works by webscraping a paging feed and looks for set triggers. Is there a better way of doing my code or is this "...
14
votes
4answers
2k views

Reading a DHT11 to a file

Disclaimer: not a Pythonista, first actual Python programme written right here. I'm reading a DHT11 sensor from GPIO pin 4 on my Raspberry Pi (thanks Thomas Ward for sending the RPi to me), and I ...
4
votes
0answers
551 views

Script that reads data over usb from Arduino to RaspberryPi, cleans it up and publishes to an MQTT broker

This is a continuation from this question: Reading analog moisture signal from Arduino over USB to RPi3 and publishing via paho MQTT I made the advised changes, and added a bunch of new stuff, I'd ...
3
votes
0answers
457 views

RC Plane Radio using the Raspberry Pi

This python code is for a homemade RC plane radio using the Raspberry Pi and a USB joystick. It sends values over serial to DSM2/X module for RC planes and other RC vehicles. This Python code is ...
3
votes
1answer
296 views

Reading analog moisture signal from Arduino over USB to RPi3 and publishing via paho MQTT

This program is meant to read a moisture sensor attached to an Arduino UNO board via USB to a Raspberry Pi3 which broadcasts it over MQTT. I am looking for any constructive criticism. ...
4
votes
1answer
826 views

Pygame Slideshow

I have written a basic slideshow program that uses pygame to manage the display screen. It cycles through all pictures files in the directory and sub-directories. There is a user configuration section ...
4
votes
2answers
192 views

Bash script for setting up a LAN to WLAN router

I wrote a bash script for the Raspberry Pi 3 (Raspbian) which has the main task of setting up a LAN to WLAN router. In addition it makes some things nicer for the intended users who have Windows ...
4
votes
1answer
420 views

Raspberry Pi headless server using bash and USB automounting

Revised from: Bash scripts and udev rules to handle USB auto mounting / unmounting Tested: Uses USB insert/remove to control a headless Raspberry Pi 3 with Raspian Jessie Lite Changes: Implement ...
2
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1answer
1k views

Bash scripts and udev rules to handle USB auto mounting / unmounting

Very new to Raspberry Pi and bash, but working on a headless server that will run a streaming app from USB audio card. The plan is to take a USB card with settings file, and when inserted, the usb ...
10
votes
1answer
288 views

Pillow-based basic GUI library for an LCD

I am working with an LCD screen and an RPi. The library I use sends 1-bit images to the screen, so I wrote this library based on Pillow to help developing the on-screen GUI. I am playing with the ...
6
votes
3answers
221 views

Pausing a loop with a Raspberry Pi 3

I am trying to perform a loop and then stop the loop when the last line of code in the if statement is printed to screen saving on CPU cycles. I want to start a <...
3
votes
0answers
1k views

Serving images from a Raspberry Pi camera over HTTP

I have a Pi with a camera module that I control with Python. I created a web server with web.py that allows me to make HTTP requests to the PI to retrieve an image. There are two optional parameters ...
1
vote
1answer
2k views

Multithreaded MJPG network stream server

I'm a bit of a neophyte when it comes to C++, and so I'd like some feedback regarding a recent project. The code sits on a Raspberry Pi and streams camera data over TCP on a specified port. The ...
2
votes
1answer
373 views

RPi script to periodically collect data from Arduino through serial port

I'm not used to Python. The script opens serial communications with an Arduino unit and send commands to and receives information from the Arduino. It is intended to run indefinitely until the system ...
3
votes
1answer
574 views

Building thermostat state machine in Python

I used a Raspberry Pi and Adafruit LCD with buttons to build a small thermostat for my house. This is the hardware I used to you can imagine how the button and the code work: https://www.adafruit.com/...
6
votes
3answers
295 views

Raspberry Pi Safe Clean Up - the decorator way

Yesterday, I've come up with the idea of using python context manager to ensure cleanup available here. This time I am using that context manager to make a ...
4
votes
3answers
2k views

NTP Clock on a Raspberry Pi

I've been tinkering around with making a fancy clock on a Raspberry Pi B. This little application will sync the Pi's time with an NTP server, then display it using ...
7
votes
1answer
359 views

Raspberry Pi GPIO safe clean up

We are always told to call GPIO.cleanup() before we exit our Pi programs. I've seen people using try ... catch ... finally to ...
5
votes
3answers
1k views

Web server to switch GPIO pin

I am running a simple Python webserver to toggle a GPIO pin on a Raspberry Pi. All seems to work well, but I have a few questions about my code (see below). I am using the ...
1
vote
2answers
647 views

Arduino microcontroller based event handler program, send sensor readings over serial bus

I am working on a project with an Arduino microcontroller and a Raspberry Pi. The code will have to do the following: If the variance calculated of the ultrasonic sensor detections exceeds 1000, a ...
10
votes
3answers
253 views

Getting funky with Pi

Push a button and an LED lights up1 and sends a signal to another computer that plays a song. First project on the Raspberry pi, really simple but definitely fun and educational to implement. Also, ...
4
votes
1answer
950 views

Controlling motors using USB serial connection from Raspberry Pi to Arduino

I am working on building an RC car/robot with Raspberry Pi and Arduino. I connected Arduino to Raspberry Pi using USB and send serial commands with python. I haven't done much programming with ...
8
votes
2answers
157 views

Backup Linux system to web

First I create a .tar of the root directory with all the file permissions saved and excluding all irrelevant directories (are these the right folders to be ...
4
votes
2answers
157 views

Recognizing a sequence read through OCR software

I am trying to recognize a sentence that I have read through optical character recognition software. This code will eventually run on a Raspberry Pi. I know for certain that it's meant to be one of a ...
12
votes
3answers
836 views

Speeding up spectrum analysis

I'm trying to speed up this code that loops over an entire spectrum range. It's using a Raspberry Pi, and a rtl-sdr dongle that covers up to around 1.7 GHz. My goal is to be sweep over that spectrum ...