Hi, I made a project called 'Robot Arm with Electromagnet' that has been published here: http://fritzing.org/projects/robot-arm-with-electromagnet/ Arduino Uno with a program controls two servos and should controls the electromagnet in the and of the arm. If a switch is off then one can control …

Using Arduino Uno and relay FRS1B in a Robot Arm project

system April 19, 2012, 1:22pm 2

If you replace the relay and transistor with a LED and resistor, does the LED turn on and off?

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