Hi,
I'm fairly new to electronics so this might seem like a really basic question but be nice please :).
I've designed a program to go through a number of light patterns with an RGB led, it seems to be working nicely in my prototype (see pic 1) (although it's hard to tell without using an RGB LED!) but I want to use it with a 3W RGB LED I have laying around (for specs see http://dx.com/p/3w-led-emitter-on-star-multicolored-rgb-4530). As I understand it arduino can only supply 40mA/pin, not the 350mA per colour required by the LED so I need to use transistors, I've never used them before so want to make sure the circuit I've designed will do the job.
please see attachments for pics of my existing prototype and my circuit.
Just in case it's not clear what is being used in the circuit:
- both capacitors are 10uF
- the Voltage regulator is TS1084CZ-3.3 (datasheet here datasheet TS1084CZ-3.3
- the transistors are actually mosfets IRF540A(datasheet here http://hackerfriendly.com/wp-content/uploads/2008/12/irf540a.pdf
- the resistors between the mosfets and the led are 1ohm 1/4W
- the arduino is running on 3.3V (hence the 3.3V regulator)
Any questions just shout.
Thanks in advance.
Howard
