have you ever put together a circuit and after finishing you find your LED doesn't work? well with this Instructable that will never happen again! I present to you the Battery clip LED tester.
Step 1: Components:
female header pins
9v battery clip
Step 2: Header Pins
solder your header pins onto a piece of perfboard, sorry about the lack of a good photo.
Step 3: Resistor
solder the 1k resistor to the header pins.
Step 4: More Soldering!
Solder the leads of the battery clip to the resistor and the other header pin.
Step 5: Your Done!
well done you now have a functioning LED tester!