Stavros Kalapothas

Ubiquitous Computing Engineer

Thessaloniki, Greece
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This user joined on 02/16/2014.

Things I've Built

Xastir on RaspberryPi

Installation walkthrough of Xastir server installation on a RaspberryPI for APRS communication (Amateur Radio).

RF signal decoding

An alternative method on decoding RF signals emitted from an RF remote control using an USB SDR Chip (RTL2832) and SDR Sharp software.

Nimbits Data Logger

Deploy a Nimbits Data Logger in the Cloud based on Google App Engine.

Arduino Multi-Factor Authentication System

An Arduino embedded system for supporting security access control with multi-factor authentication (Voice Recognition, Keypad Password, RFID Tag Code).

GPS Live

GPS Live is a complete Fleet Management Service (based on OpenGTS, OSS project) that includes a rich set of features like: Realtime vehicles and assets tracking online, Mobile client for Android/Symbian phones with GPS support.

Using Optoisolator w/ arduino to control other circuits

Using a 4N25 Optoisolator w/ Arduino to control other circuits.

Arduino + Chiptunes = Nostalgia!

A chiptune test w/ arduino.

Old Joystick Hack for Gameduino

A simple walkthrough of using a spare joystick as an input controller for the GameDuino shield.


Arduino + LM35 + LCD = VisioTherm

Arduino IR Remote Control

Arduino w/ TSOP1238 IR Receiver + LCD. I have programmed an IR TV remote sending codes to display on LCD.

Arduino and Ethernet - Building the Internet of Things (IoT)

Controlling a LED connected on Arduino w/ Ethernet Module/Shield remotely.

Water Tank Level Display w/ Arduino

An Arduino based water tank level meter fascilitating an ultrasonic sonar range module and a LCD display plus a temp sensor.

RaspberryPi playing with Arduino and Processing

Raspberry Pi running Processing to communicate w/ Arduino reading from a temp sensor showing on screen. You can also dim a LED on Arduino by moving a slider.

GeoFileViewer Android App.

This application is provided as example code of some basic features usage like Splash screen, Tab navigation, Google map, File I/O, File downloader, UI threading, File viewer.

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Radu Motisan wrote 10/31/2017 at 19:45 point

Thanks for following #City Air Quality ! This is the fifth uRADMonitor hardware, designed as a better fit to smart city implementations. More here:

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Stavros Kalapothas wrote 10/31/2017 at 20:17 point

Thanks for the heads up @Radu Motisan . Overall, #City Air Quality it's a nice project and this latest update to include an all-in-one sensor board kit which supports multiple comm. options including LoRaWAN is really great!

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Radu Motisan wrote 10/31/2017 at 20:20 point

Thanks for the excellent feedback!! Planning to also add a temp/pressure sensor (probably the BME280 from Bosch), and for that I need a PCB protuberance outside the enclosure, so I can place the sensing element away from the heating electronics. Possibly, also a noise sensor. So many plans, so little time.

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Cezar Pristavu wrote 05/04/2014 at 15:58 point
Glad to thank you for your skull :D

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