Rumtopf
Dead Bug Arduino Output Boosters
After installing the Dispatchatron behind the entertainment center and getting all the various alignments and clearances perfect, I realized that the Arduino was not driving my cardboard facade's LEDs brightly enough to be seen during the day. I threw together a couple PNP transistor boosters to reach back and plug in. I ran the red wire off the emitter to plug into my +5v rail, a 10k resistor off the base to plug into the Arduino output, and a snipped-off piece of female header into which I plugged the wire going to the LED.
Dead Bug Arduino Output Boosters
After installing the Dispatchatron behind the entertainment center and getting all the various alignments and clearances perfect, I realized that the Arduino was not driving my cardboard facade's LEDs brightly enough to be seen during the day. I threw together a couple PNP transistor boosters to reach back and plug in. I ran the red wire off the emitter to plug into my +5v rail, a 10k resistor off the base to plug into the Arduino output, and a snipped-off piece of female header into which I plugged the wire going to the LED.