SparkFun Forums 

Where electronics enthusiasts find answers.

Discussions on the software and hardware for Atmel's STK standard.
By secure4code
#160075
I want to make an electronic waterfall
I'm 30 electronic valves with 12 V and 750 mA and 9 watts
I want to switch valves by microcontroller and transistor
i use atmega32 And I do not want to use the relay Because they are noisy and sound
can you help me How do I use a transistor and how ?