Yes the digital pin.Step 1. The easiest way to do it is look at the datasheet of the transistor you have, find out what the transistor is.Step 2. Find the collector, base, emitter pins, careful which way round the transistor is (Generally, Base is middle) Step 3. place a wire from arduino digital pin 2 to the breadboard, connect a 1k-10k resistor, then in series through that resistor and into the base pin.Step 4 & 5, depending on if it's an NPN or PNP, you have to take different steps, refer to Step 1. then get back to us.
Quote from: AWOL on May 02, 2013, 10:39 pmQuotehow much does the Arduino giveSee reply #5Ok So basecly no I'm not damaging my leds, nor my Arduino. Though since my setup wants 130mA it's getting less than a third of what it wants.
Quotehow much does the Arduino giveSee reply #5
how much does the Arduino give
I'm back for more help.
What's the problem?
'm hoping this is drawn correctly,
Quote'm hoping this is drawn correctly,you may want to check the diode orientation
It depends whether the LED is connected to the Arduino according to the schematic.