Arduino Transistor Switch Led
Build an arduino shield to drive high power rgb led if you have read our previous post you know how easy it is to connect a rgb led to an arduino micro.
Arduino transistor switch led. Here the switch is connected to digital pin 4 d4 and led is connected to digital pin 8 d8 of arduino uno. Thus pin d4 should be declared as input and pin d8 as. Re this circuit ive done the following using just an arduino and a h21a6 from rapidonline. The spec for the r21a says that the led requires 12v and draws 50ma.
Transistor as a switch is a very important and useful application of transistors. Transistor works in saturation and cutoff regions when it works as switch. Transistor act as a switch working and transistor switching circuit gallery of electronic circuits and projects providing lot of diy circuit diagrams robotics. 94 comments gamelan and electronics.
Relay jeff aaron bryant said september 5 2010 at 706 pm first built a circuit as described on this post and it worked. Build 15 complete arduino projects from scratch. A car controlled using an app a cell phone games and much much more.