# KDMChiTown

1
4CommentsJoined December 10th, 2015

Tell us about yourself!

• KDMChiTown followed Historic & Futuristic, Cookies, Science, Paper Airplanes and 62 others channel 1 year ago
• As noted below, the lock provides limited security for an external door, but I could see an application on a kitchen cabinet to keep your snacks/food secure from a hungry roommate...

• It depends on how many meters of the LED strips you want to run, it might be difficult finding an old PC power supply much over 350-450 watts. You can pick up a 12V 30 amp power supply from Aliexpress.com for around \$30 US (including shipping). Higher amperage power supplies are also available. If you want to calculate the size of the power supply you need, divide the strip's watts/meter by its voltage (typically 12V). This will give you the amps/meter. Multiply this number by the total meters of LED strips you want to power to get the total amps required. It's a good idea to add a 20% safety margin to your total so you're not running your power supply full out all the time. In the author's case his strips were 30Watts/5meters=6W/m, Amps for one meter would be 6Watts/12Volts=0.5Amp/...

see more »

It depends on how many meters of the LED strips you want to run, it might be difficult finding an old PC power supply much over 350-450 watts. You can pick up a 12V 30 amp power supply from Aliexpress.com for around \$30 US (including shipping). Higher amperage power supplies are also available. If you want to calculate the size of the power supply you need, divide the strip's watts/meter by its voltage (typically 12V). This will give you the amps/meter. Multiply this number by the total meters of LED strips you want to power to get the total amps required. It's a good idea to add a 20% safety margin to your total so you're not running your power supply full out all the time. In the author's case his strips were 30Watts/5meters=6W/m, Amps for one meter would be 6Watts/12Volts=0.5Amp/m so a 30Amp power supply could run about 48 meters of LED strips with a 20% "safety margin". 30A*80%=24A, 24A/0.5A=48m.