Diagram Of The Difference Between Servo And Receiver Wiring And Three Wire Insertion Methods

Have you ever encountered this situation when playing model airplanes or making robots: you bought aservo, but you have trouble with the interface on the receiver, and you don’t know which wire to plug in? Or the rudder won't move even after plugging it in, and I'm murmuring in my heart. Don't worry, this is actually a problem that many beginners will encounter. To put it bluntly, the connection between theservoand the receiver is to energize theservoand transmit signals. However, if the small details are not clear, the servo may not work at best, or the equipment may be burned out. Today we are going to talk about this topic and use vernacular to help you understand this issue thoroughly.

Who are the three steering gear wires?

Pick up your servo and look at the wires sticking out of it. Are there three wires? Usually the colors of these three lines are different. The most common are brown (or black), red, and orange (or yellow, white). You have to remember a formula:the ground wire is the most stable, the energy is in the middle, and the direction of the signal tube is. The brown or black wire is the ground wire, responsible for forming a loop of current; the red wire is the positive pole of the power supply, providing power for the servo to work; the remaining one with the most special color is the signal wire, which is responsible for telling the servo to which angle it should turn. Once you understand the identities of these three wires, you will have an idea of the subsequent wiring.

How to check the order of receiver interface

Now looking at the receiver, there are usually rows of pins on it, usually three pins in a group. Here comes the key point, the order of this group of needles is particular. You can take a closer look. The interface of the receiver is usually marked with symbols. The most common one is that on the side with the words or the side corresponding to the groove, the first pin is the signal wire, the middle pin is the positive pole, and the third pin is the negative pole. But for different brands of receivers, or different models of the same brand, this order may be different. So the safest way isto find the logo on the receiverand see where the GND (ground wire), VCC (power supply) and S (signal) marked on it correspond to.

Will plugging it forward and backward will burn the servo?

Many people are worried about this issue. I can give you some reassurance:usually, the servo will not be burned out immediately if plugged in backwards. Because most of today’s receiver and servo interfaces have fool-proof designs or are distinguished by the color of the lines. But if you forcefully push the plug in backwards, the positive and negative poles may be reversed. At this time, not only will the servo not work, but the reverse voltage will be applied to its internal circuit board, causing the chip to overheat or even burn out. So when you find that the plug is in the wrong direction, don't force it. Check whether the position or direction of the plug needs to be adjusted.

How to quickly identify the servo line sequence

What should you do if the servo cable on your hand has been cut, or if you bought a servo without a mark? Don't panic, we still have a solution. You can prepare a multimeter, set it to the diode or buzzer setting, and then use the red and black test leads to test. A simple rule is:no matter what kind of steering gear, the one on the edge is usually the ground wire or the signal wire. But a safer bet is to look at the circuit board. If you can see the circuit board inside the servo, find the largest chip on it. The signal line is usually connected to the chip pins. What is connected to the large area of copper foil on the circuit board is usually the ground wire. The remaining one is naturally the positive pole of the power supply.

Standard servo and receiver wiring examples

There’s a lot of theory, let’s look at a practical example. Suppose you have a very common receiver and a standard servo. The interface order of the receiver is usually: the innermost one (near the receiver label) is the signal line, the middle is the positive pole, and the outermost is the negative pole. At this time, you adjust the direction of the servo plug so that the orange signal wire is aligned with the receiver signal wire, and then gently insert it until the buckle is stuck. After plugging it in, power on the receiver, move the joystick, and the servo should rotate smoothly. This is a standard wiring process. Remember it and it can solve most of your problems.

Are the interfaces of receivers from different brands the same?

Special attention needs to be paid here. Different brands of receivers have different interface definitions. Just like JR and these two brands, the locations of their signal and power cables are often reversed. Generally, they are arranged in the order of signal - positive pole - negative pole, while JR may be arranged in the order of positive pole - negative pole - signal. This shows that if the servo of the adapted receiver is directly connected to the JR receiver, the position of the signal line will not match. So how to solve it? Either rearrange the order of the wires inside the plug, or use an adapter cable. Therefore, before performing wiring operations, you must first check the brand of your receiver and its interface definition. This is an extremely critical step.

This step is crucial because once the wrong wiring is connected, the device may not work properly or even be damaged. The different interface definitions of different brands of receivers bring certain challenges to users. Therefore, we must be cautious in pre-wiring inquiries to ensure an accurate and clear understanding of the receiver's brand and interface definitions, so as to avoid various problems caused by wiring errors and ensure the normal operation and safety of the equipment.

After talking so much, do you feel more confident next time you do wiring? Don't be afraid, just plug it in a few times and look at the logo on the device, and you will slowly be able to recognize where to plug it in at a glance. By the way, what's the weirdest problem you've ever encountered during wiring? Welcome to share it in the comment area, let's discuss it together, and don't forget to like and collect it so that more friends can see it!