I am attempting to build a smallish time fountain http://www.youtube.com/watch?v=kh_RXTEyJdU&feature=fvwrel (not that big or advance for round 1) with the hopes of making a large scale fountain in the future.
I am new to all this and have been reading and watching videos online trying to learn about the software and Hardware of Arduino. What I have right now: Arduino Uno R3 Seeedstudio BT Shield (to control the fountain via phone) 38 UV LED - http://www.superbrightleds.com/moreinfo/component-leds/5mm-uv-led-15-degree-viewing-angle-380-nm-30mw/632/1907/ 6V DC Water Pump - http://www.amazon.com/gp/product/B004HHW0FU/ref=oh_details_o02_s00_i00 (May be too small we will see) Frame for the LEDs, and Pump
I need to power all 38 LED but found out that I don't think I can power it directly with my Arduino board :( I have been told about using MOSFET but don't even know what it is used for. Also, the small pump I was hoping to use with the arduino but think I may need the motor shield. Regardless, if I can't power the LEDs from the UNO R3 then I will need to figure out how to integrate the power to the pump and the LEDs then control it with the UNO R3.
My first question is how do I power the LEDs but control them from the UNO R3? Second, can I power the Pump directly from the UNO R3 or do I have to get the motor shield?