LCD Plug sensors The older Arduino Deicimila /

The older Arduino Deicimila / Duemilanove bootloader works fine with the logic level pin floating (VCCIO - pin 4 on the FTDI chip)

There is a “GravityPlug” class in the JeeLib library to interface with this sensor and read out the 3 axes' accelerations as integers

making it very easy to solder and assemble

and either a buzzer or a transistor driver for a modest load such as relay

LED strips are not included

LCD Plug sensors The older Arduino Deicimila /The LCD Plug is a small board containing an MCP23008 I O expander which connects to most common 16 pin character LCD displays that use the HD44780 standard. The backlight can be turned off for greatly reduced power consumption. Two solder jumpers let you select between +3V and PWR as source for the LCD logic and backlight, respectively. An I2C bus running at 3. 3V is used for interconnection, with all the power and signal lines brought out to both