SparkFun Rotary Encoder Breakout - Illuminated (RG/RGB) Boards Automotive The MQ-4 can detect natural

The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm

The Hydra brings the 5V and GND lines from your USB power supply

This is it

This is a small buzzer for the LilyPad system

with extra long legs – great for stacking Arduino shields

SparkFun Rotary Encoder Breakout - Illuminated (RG/RGB) Boards Automotive The MQ-4 can detect naturalThis is a clever little breakout board for both the RGB and R G illuminated rotary encoders. On one side, it breaks out all of the RGB pins to standard, breadboard friendly, 0. 1" headers. Turn it over and it has a footprint for the R G version! Simply solder an encoder down to the board and youre ready to add illuminated input to your next project. Documents: Schematic Eagle Files GitHub