This repository contains Arduino sketches and Arduino libraries maintained by the [RUG/DTPA](https://www.rug.nl/research/discrete-technology-production-automation/) group.
*Nexus_Omni4WD*: Firmware for the Nexus Omni4WD wheel base for setting the wheel speeds independently. It is used to control the robot under ROS. The Omni4WD wheel controller hardware board no. 10009 with io-expansion shield is based on the Arduino Duemilanove/ATMEGA328. Take care of this when programming the controller.
*sketches/Nexus_Omni4WD*: This folder contains the Arduino sketch of the firmware. The program works as a simple command interpreter for controlling the wheel speeds independently. To compile, use the libraries provided in the *extra/factory_10011.zip* archive.
*testcarcom.py*: This is a small Python application to test the Nexus_Omni4WD firmware (sketch). The python application sends data packages to set the wheel speeds.
*adaptiveFreqOsc*: An adaptive frequency oscillator example with Arduino.
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*varDutyT1*: A sketch for varying (modulating) the duty-cycle of the PWM on the UNO-output pins 9 and 10 via the analog A0 input. The PWM frequency and update rate(!) = 15.625kHz. Resolution is 10-bits.