I'm doing this project where I control an RC Car using infrared. Everything is perfect with 1 IR LED, connected to a 220ohm resistor. I'm worried about the range of the signal so I'm thinking of using multiple IR LEDs (let's say 4 to 6 LEDs) to emit the signal.
My problem is how do I achieve this while controlling them through a single pin?
For testing I tried connecting 2 normal red LED serially through a 220ohm resistor and both of them became dimmer. The LEDs needs to be bright.
On hand now I have the IRF520 transistor. Will it work?
I bought my IR LEDs online, while it doesn't say it's part number it comes with this description:
IR Transmitter Emitted color:infrared Lens:5mm, water clear 940nm wavelength Forward current:50mA Forward voltage: 1-1.4V