mousa

Auto faucet is expensive and difficult to installing, but you can convert your old faucet to auto faucet by using an auto tap head. That is cheap and easy to installation. don't need to change old faucet just change the tap head. that help to 70% water saving. its price only 28$. in following video you can see how it work.

This is second method for making LED board. in first method i used breadboard for making a small LED board but since there aren't big breadboard in markets so that method not suitable for big size projects. In following video you can see how can make a LED board using aluminum plate. The aluminum plate with 0.7 mm thickness must puncture with 4.8 or 4.9 mm drill bit.(for 5mm LEDs) The LEDs must connect together in parallel means all positive connect together and all negative connect together so you can run that with 2 to 3.5v (according to led types). you have to using a resistor through positive line to protect your LEDs and increase its life period.(see the note) Parts list: Aluminum plate 0.7 mm thickness Drill bit 4.8 or 4.9 mm (for 5mm LED) Silicone adhesive Black color spray battery Text or shape printed on a paper Solder flux LED(number of LEDs depend on your text or shape bigness) Resistor (see the note) Note:  Protection resistor used when supply power is more than s