The Start

Hi, What and Why

Plug it in

Rule number 1

Water Sensor

Sound Sensor


Tri Colour LED

RTC (Real Time Clock) DS1302

RTC (Real Time Clock) DS3231

Matrix LED step 1


Stepper Motor

LCD revisited with PCF8574T

Humidity Sensor

Shift Register

RFID tags (RC-522)

7 Segment display

Ultrasonic distance sensor

5V regulator

analogRead and analogWrite

Wiring an Array of Switches

The next step

Other things I have bought

Infra red and Processing

Programming a separate arduino chip

Creating your own PCB

L293D for a DC motor

4 digit 7 segment display

Starting with motors

RF433 Wireless Comms

Sort a character array

More stuff

I2C devices (SDA,SCL)

I2C scanner

SPI devices (MOSI,MISO)

HMC5883L Compass

MMA7361 Accelerometer

Added projects

Message Display System

4WD robot car
4WD robot car II

4WD robot car COMPLETE

MP3 Player

Accelerometer MMA7361

This device tells you how much it is tilting, and in what direction. I'll be using it in the quadcopter project.
At the moment, with the example sketch, it seems very twitchy. Many results can be read per second, each slightly different although the device hasn't moved. It will require careful programming to give useful results; perhaps collect 100 results and then use the mean average.

Accelerometer. The pins are noted in the library; they are
sleepPin = 13,
selfTestPin = 12,
zeroGPin = 11,
gSelectPin = 10,
xPin = A0,
yPin = A1,
zPin = A2.
accelerometer MMA7361

#include <AcceleroMMA7361.h>

AcceleroMMA7361 accelero;
int x;
int y;
int z;

void setup()
  accelero.begin(13, 12, 11, 10, A0, A1, A2);
  accelero.setARefVoltage(5);                   //sets the AREF voltage to 5
  accelero.setSensitivity(HIGH);                   //sets the sensitivity to +/-6G Check Library for LOW/HIGH

void loop()
  x = accelero.getXVolt();
  y = accelero.getYVolt();
  z = accelero.getZVolt();
  Serial.print("\nx: ");
  Serial.print("mV\ty: ");
  Serial.print("mV\tz: ");
  delay(500);                                     //make it readable