Micro Helicopter Control Systems - Which Type Will You Choose?
Micro helicopters generally come equipped with one of two types of remote control systems. If you're in the market for a new micro helicopter, it's important to understand the differences between these types in order to get the most out your purchase. In this article I'll explain the difference between the two control system types and the pros and cons of each. Plus, I'll provide some Bonus tips on some handy features to look for in a control system. Hopefully after reading this you will have a better idea of what to look for in a micro helicopter control system.
The first control system type is Infrared. Infrared control systems use infrared LEDs (similar to those on a TV Remote control) to transmit the signal to one or more infrared receivers on the helicopter itself. These systems are very common with inexpensive micro helicopters because they are very cheap for the manufacturers to incorporate. It might not sound like this type of system would not work very well on an RC helicopter. However, it turns out that in the right setting, infrared LEDs work very well. But that is the key... in the right setting.
Infrared control systems struggle outside in natural daylight; the wavelength of the sun's rays can interfere with the controller. Direct "line of sight" between the helicopter and controller is required. It won't operate through walls, people etc. Basically the helicopter has to "see" the controller. Finally infrared control systems have limited range. Beyond 30 to 50 feet from the controller they tend to lose signal. Fortunately for us, these requirements are perfectly suited for micro helicopters. Micro helicopters are intended to be operated indoors at close range so Infrared happens to be a very well suited technology.
The second type of control system is the more typical radio frequency or "RF" type of control system. These can operate in a number of different frequency bands and do not suffer from the same limitations as infrared. Of course, on the flip side, RF controllers are more expensive to implement and have their own potential set of drawbacks. Typically, you will not find RF controllers in the very inexpensive micro helicopters.
RF control systems provide much longer range than their infrared counterparts. They don't have the line of sight issues though and are capable of operating through walls. These days, when used indoors, RF is subject to interference from our technology filled homes. Things like microwaves, cordless phones, computers, wireless routers and cell phones are all potential sources for RF interference. In practice, I haven't found interference to be a big problem for micro helicopters. However, it is something to be aware of and take into consideration, especially if you have a lot of these types of devices in your home.
There are a couple of features you may want to look for in a micro helicopter
1. Trim Adjustment -- Having trim adjustment allows you to compensate for minor problems with your helicopter. For example, a bent tail rotor may cause your helicopter to spin in circles. The Trim Adjustment will allow you counteract the problem so it hovers without spinning.
2. Tri-Band or frequency selector switches -- Micro helicopters often come in different "bands" or "Frequencies" that allow multiple helicopters to be flown at the same time without interfering with one another. Some controllers include switches to select between bands/frequencies. This is a very useful feature that allows you to interchange the controller with different helicopters.
3. Ergonomic design -- This may sound like an obvious feature to look for, but when shopping online, a well laid out controller design is often overlooked. Some manufacturers like to design their controllers for looks rather than usability. Make sure that the controls are laid out in a symmetrical fashion that offers easy access to all controls. Trust me; this will make flying much easier.
4. Built in Charging Systems -- This will only be an option for the very low power helicopters, but it's nice not worrying about lugging around a battery charger and staying near electrical outlets when you want to take your helicopter on the go.
In most cases an infrared control system will be more than adequate for controlling a micro helicopter. However, it's important to understand the limitations before making a purchase decision. If you are looking at higher end micro helicopters, an RF controller (my preference) is a worthwhile option to consider. You don't need to worry about line of sight obstacles such as furniture, walls or passersby. The important thing is to understand your options, and make a decision that will provide the most value to you.
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