Here's the circuit I'm working on, it's a robotic stringed musical instrument thing, that uses 6 DC motors and an Arduino Duemilanove - The resistors are 0.25w 1KΩ The transis …

i have a 1.25 to 28 V variable power supply I'm working on. here's the schematic: Schematic link What I'd like to do is put in a fan (12v 0.16A) so it runs when i turn it on, how …

I'm trying to find an off the shelf plug in ac/dc power supply unit to work with my project. I want to power an Arduino Duemilanove and six 12v 1A solenoids. Here's the solenoids - …

I'm looking to start a few different projects and stock up on some basic components - I was just wondering if anyone knows a good supplier of DC motors, stepper motors and servos? …

I'm designing a board that can be powered either by USB or an ATX power supply. They can both be plugged in at the same time, independently. I'd like the ATX to provide 5V if its …

Hi all, I have no vocabulary for this, so forgive my clumsiness in explaining... I need to hook up a power supply to use with solenoids and an Arduino, but I'm not sure where t …