electronut

// ardu_alert.ino
//
// read serial port and turn leds on/off
//
// Mahesh Venkitachalam
// electronut.in


#include "Arduino.h"

electronut

"""
ardu_alert.py

Alert Arduino via serial port when an event happens on the host computer.

Author: Mahesh Venkitachalam
Website: electronut.in

"""

electronut

//************************************************************
// attiny84-hacks.c
//
// Various snippets of code that I have developed for
// the ATtiny84
//
// Author: Mahesh Venkitachalam
// Website: electronut.in
//************************************************************

electronut

"""
alganal.py

Description:

A utility program to plot algorithmic time complexity of a function.

Author: Mahesh Venkitachalam
Website: electronut.in
"""

electronut

"""
test_HW_PWM.py

For testing the hardware PWM capabilities of the Raspberry Pi Model A+.

Author: Mahesh Venkitachalam
Website: electronut.in
"""

import wiringpi2 as wiringpi

electronut

/* 
      
   Author: Mahesh Venkitachalam
   Website: electronut.in


   Reference:

   http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk51.v9.0.0%2Findex.html

electronut

#define BAUD 9600
#define MYUBRR F_CPU/16/BAUD-1

void USART_Init(unsigned int ubrr)
{
  /*Set baud rate */
  UBRR0H = (unsigned char)(ubrr>>8);
  UBRR0L = (unsigned char)ubrr;
  /*Enable receiver and transmitter */
  UCSR0B = (1<<RXEN0)|(1<<TXEN0);

electronut

// HC-SR04-test.ino
// 
// Get distance information from Ultrasonic Ranging Module HC-SR04 and 
// send it via serial port.
//
// electronut.in

#include "Arduino.h"

int pinTrigger = 2;

electronut

# Name: Makefile
#
# A Makefile for the ATtiny84.
#
# electronut.in

DEVICE      = attiny84
CLOCK      = 8000000
PROGRAMMER = -c usbtiny 
OBJECTS    = main.o

electronut

# blinking an LED with Raspberry Pi. LED is connected on pin 18 (GPIO5)
#
# run this as:
# sudo python test.py
#
# electronut.in

import time
import RPi.GPIO as GPIO