So I made a small 5v Power Supply (Regulated) using one of Sparkfuns tutorials.
I used a Slightly Different LED (a 2.6v with 20mA) and a 270 ohm resistor ( have no idea why they use a 330 Ohm one...270 was even overkill for mine.
Anyways Im using my Multimeter and measuring the voltages (Marked in purple, - for Ground probe, and + for my + probe).
Im getting a correct 5v reading after the LM7805 (well like 4.95 volts.....close enough), but when I measure after the LED I get 1.8v....
This doesn't make any sense.......
Here are some pictures of the circuit itself, I have drawn arrows to where I measured the 1.8v with my Probe (Positive red probe), the Resistor is a 270ohm, and I was incorrect about the Forward Voltage, it's actually 2.25 (MAX was 2.6......thats what got me confused). Sorry for the Long pictures, but wide-ways they are kinda hard to see. Capacitor values are same as schematic.
edit: Corrected Picture. edit2: Added picture of circuit