How Infrared Controlled Heli Works
Do you want to know how an infrared controlled heli works? You've come to the right place. The prefix infra means below, so infrared is below red in the electromagnetic spectrum. Basically, infrared controlled helis work the same way as TV remotes do—through beams of light.
Again, an infrared controlled heli works just like a TV remote does. It operates by sending commands from a remote transmitter, which is the heli controller, through an infrared beam (which is impossible to see with the naked eye) via an LED to the apparatus that is being commanded. The infrared receiver is positioned in front of the apparatus, where it receives these pulses of light and then decodes them into binary data understood by the microprocessor inside the apparatus. In simpler terms, this is when the code is interpreted and is turned into commands, such as fly left.
Infrared signals have a range of up to 30 feet, or ten yards. Depending on the strength of the infrared signal, the amount of sunlight, and if there are other infrared transmitting devices in the area, the range may be greatly shortened. Infrared signals also require a direct line of sight. This means that the LED on the heli controller must be pointed at the heli for it's infrared receiver to work. That being said, infrared controlled helis are impossible to control when at a far distance. Once you get out of range, the heli will cease to function and crash.