After many attempts to make all sorts of LED-conversions I finnaly found one solution that is simple and efficient. Of course, you do need a great amount of patience in making this but when you consider the countless hours of pure light -low consumption you'll get, it's all worth it. This tutorial is about converting regular GU4(MR11) halogen bulbs to LED bulbs while maintaining full usability as 12V light bulbs that can be used in indoor task or accent lighting.
Step 1: You'll need the following stuff to start working:
- LED's - as many as you want. You may want to keep this number reasonable since more than 22 LED's will make you work painful.
- online acces to http://led.linear1.org/led.wiz , a great LED array calculator you can use to figure out the resistors you'll need depending on your number of LED's and the supply voltage.
- Super Glue & compound glue. You can use other glue as well but super glue sticks fast and I recomend it.
- solder wire, moderate soldering skills, solder gun
- one small piece of 0.2mm aluminium sheet (this is used in printing industry, I work in this field and there are a lot of aluminium plates around here). Any offset printing shop will be kind enough to give you a used one since they use hundreds each month. A cut-out Coca-Cola can will do, once you straighten it.
- a paper perforator (office type, 2-hole punch)
resistors (depending on your needs)
- a few other common household items along with a good amount of patience.
Step 2: Step one - empty the bulb.
Proceed with this until you get enough cement out for the next phase.