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Category: Raspberry Pi

Android Gauge View

Android Gauge View

January 16, 2017March 10, 2018 Serge Helfrich
With all these Raspberry Pi and Arduino projects in mind I am developing this gauge view for IoT apps on Android. There are some alternatives around, but I’m not quite satisfied with them as the... Read More
Nagios 4 on a Raspberry Pi

Nagios 4 on a Raspberry Pi

September 13, 2015December 9, 2018 Pygmalion
Introduction As a low power device the Raspberry Pi makes for a perfect network monitoring host. I’m running Nagios 4 on a Raspberry Pi 2 with a 5V/2A power supply. Fixed IP A fixed IP address i... Read More
Controlling the Pi Rover over SSH

Controlling the Pi Rover over SSH

September 6, 2015 Pygmalion
Introduction We have seen how to control the Pi Rover over HTTP. However, you may find it a bit of an overkill to install a webserver bundled with PHP just to control the motors. A leaner alternative ... Read More
Controlling the Pi Rover over HTTP

Controlling the Pi Rover over HTTP

June 27, 2015September 26, 2016 Pygmalion
Introduction Now that we have a programmable robotic platform, built with a Raspberry Pi, a motor controller and a chassis, we’d like to control it remotely, from a PC and later maybe from a mob... Read More
A wireless access point with Raspberry Pi and the AWUS036NH USB adapter

A wireless access point with Raspberry Pi and the AWUS036NH USB adapter

June 15, 2015July 17, 2015 Pygmalion
Introduction The need for a new access point arose out of discontent with the Speedport W723V DSL router as provided by T-Online. De device tended to become less stable as more wireless devices got co... Read More
Assign a static IP address to the wireless network interface on Raspberry Pi

Assign a static IP address to the wireless network interface on Raspberry Pi

March 14, 2015March 23, 2016 Pygmalion
Introduction To easily access our wireless Raspberry Pi projects (like the Pi Rover) over SSH, FTP, HTTP or whatever, we want to assign a static IP to the WLAN interface. In this example the network a... Read More
The HC-SR04 ultrasound range finder on Raspberry Pi

The HC-SR04 ultrasound range finder on Raspberry Pi

March 7, 2015March 3, 2024 Pygmalion
Introduction The HC-SR04 can be used to measure distance and detect obstacles in robotic projects. However, the reported range is not always accurate, small objects are mostly not detected at all and ... Read More
Pi Rover: Raspberry Pi with a DMC02 motor controller

Pi Rover: Raspberry Pi with a DMC02 motor controller

March 1, 2015March 14, 2015 Pygmalion
Introduction We’ll build a mobile robotic platform with a Raspberry Pi on a chassis. A Pololu DMC02 motor controller board is used to drive the engines. The controller receives serial commands f... Read More
GStreamer on Raspberry Pi – the short answer

GStreamer on Raspberry Pi – the short answer

February 22, 2015March 14, 2015 Pygmalion
What I needed was a live video stream to provide some sort of an FPV experience. Streaming over VLC or ffmpeg turned out to be suffering from too much of a time lag. Streaming over MJPEG Streamer with... Read More
Flight radar with Raspberry Pi and an SDR dongle

Flight radar with Raspberry Pi and an SDR dongle

November 14, 2014March 4, 2018 Serge Helfrich
Introduction Most large aircrafts today are equipped with an ‘Automatic Dependent Surveillance Broadcast‘ (ADS-B) system. This equipment will be mandatory in 2017. It broadcasts flight dat... Read More
Daylight controlled devices with PyEphem

Daylight controlled devices with PyEphem

November 7, 2014January 5, 2019 Pygmalion
I needed a camera to be turned off at night and a PIR sensor (controlling a light switch) to be turned on. A photoresistor would be an obvious choice here, but we can also accurately calculate twiligh... Read More
Motion detection with Raspberry Pi

Motion detection with Raspberry Pi

November 2, 2014November 22, 2015 Pygmalion
To detect intruders in my living room I used the PIR sensor from a Funduino starter kit. A Python script triggers some appropriate actions when motion is detected. Set the jumper on the sensor PCB to ... Read More
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