So I was thinking of building my own multitouch table, it seems like a pretty simple project (heres link if interested: Build Your Own Multitouch Surface Computer - Page 1 | Maximum PC)
The only real electronic components that they had to make in the project is soldering together the infrared LEDs. They did this by using 12V from the computer PSU, and since the LEDs has a voltage drop of 1.5V, they made stings of 8 LEDs in parallel. Someone mentioned in the comments that not using resistors is not a good idea.
As you may have noticed from of my horrible terminology, i dont have a lot of experience in electronics (i can put together a PC, thats about it). Is their way safe? Is there a better alternative?
The only real electronic components that they had to make in the project is soldering together the infrared LEDs. They did this by using 12V from the computer PSU, and since the LEDs has a voltage drop of 1.5V, they made stings of 8 LEDs in parallel. Someone mentioned in the comments that not using resistors is not a good idea.
As you may have noticed from of my horrible terminology, i dont have a lot of experience in electronics (i can put together a PC, thats about it). Is their way safe? Is there a better alternative?