Illustration Of The Connection Method Between The Servo And The Receiver. Video Tutorial On The Correct Insertion Of The Three Wires.

When playing model airplanes or making robots, the most vexing problem is often not that theservois broken or that the receiver is out of power, but how to connect them. Looking at the three wires on theservoand the row of pins on the receiver, many novice friends were confused: How should I insert these wires? Will the device burn if plugged in incorrectly? Don't worry, today we will use the most down-to-earth way to break down the connection between theservoand the receiver and explain it clearly.

Which of the three servo cables is which?

Even though the wire extending out of the servo is thin, there are many ways inside. The standard servo cable has three wires, namely positive, negative and signal wires. Usually the red wire is the positive pole, which is the power wire; the brown or black wire is the negative pole, also called the ground wire; and the remaining orange, yellow or white wire is the signal wire. As long as you remember this color rule, you will basically get it right. The colors of some servo wires may be different, but most of them follow this rule. When you are really unsure, it is safest to use a multimeter to measure the positive and negative poles.

Which port should the receiver channel be plugged into?

There is a row of jacks on the receiver marked with numbers or letters, each corresponding to a channel. For example, to control the direction, connect it to channel 1, and to control the throttle, connect it to channel 2 or 3. It depends on how your remote control is set up. The key is to align the signal line of the servo with the signal end of the corresponding channel of the receiver when plugging it in. On most receivers, the three pins of each channel are signal, positive, and negative. The order may be slightly different. It is most reliable to take a look at the markings on the receiver before plugging in.

Will the servo burn if the signal cable is plugged in backwards?

This may be everyone's biggest concern. To tell you the truth, most equipment now has anti-reverse connection protection, but it is not absolute. If the positive and negative poles are plugged in reversely, the circuit board in the servo may be burned out in an instant, and in severe cases, the receiver may be damaged. Therefore, you must develop a good habit before plugging in. First confirm the position of the positive and negative poles and signal wires, align them and then insert them gently. If you can't insert it, don't force it. Check to see if the direction is reversed or the pins are crooked. Be careful.

Illustration of servo receiver connection steps

The first step is to prepare your servo, receiver and remote control, and make sure all devices are powered off. The second step is to carefully observe the fool-proof design of the servo plug and the receiver interface. Usually there is a small slope on one side of the plug, which corresponds to the protrusion of the receiver interface. Align the direction and insert it gently. You will hear a click when it is in place. The third step is to check all wiring to ensure that the positive and negative poles are not connected incorrectly. Finally, turn on the power and test it, hit the joystick of the remote control to see if the servo can move accordingly. If it can move, it means you're done.

How to arrange the wiring of multiple servos at the same time

It is very common for a receiver to control multiple servos, such as a robotic arm or a fixed-wing aircraft model. At this time, each servo must occupy a separate channel and be plugged into the corresponding interface according to functional requirements. If you have a large number of servos and the receiver channels are not enough, you can buy a servo expansion board, or use a Y-shaped cable to connect two servos in parallel to one channel, but be aware that in this case the actions of the two servos are the same, and the power supply pressure on the receiver will be greater.

How to avoid common mistakes when connecting servos

The most common mistake that novices make is to plug in and out of the servo after power is on. This is a taboo and must be operated in a power-off state. Also, I didn’t figure out the location of the signal cable and plugged it in the wrong direction. In addition, if the servo cable is not long enough, do not pull hard and use an extension cable to connect it. Before wiring, it is best to use a marker pen to mark the plug and write which channel it is. This will make it clear at a glance during future maintenance and debugging, so as to avoid having to disassemble and replug it next time.

After reading this article, do you think the connection between the servo and the receiver is no longer so mysterious? Have you ever encountered any weird problems when wiring? Welcome to share your experience in the comment area, like and bookmark this article, take a look at it next time you pick up the servo, and make sure you don’t make the same mistake again!