ibus vs sbus

Ibus Vs Sbus: Which Digital Protocol Performs Better?

Remote Control racing is nothing short of ultimate amusement! Choosing the right digital protocol, therefore, becomes important.

Here we are comparing ibus vs sbus.

The Ibus protocol performs better than Sbus when sending and receiving data on the basic platform. However, Sbus can only send data and incorporates a lesser baud rate than Ibus. As a remote-control racing lover, with Ibus, you would enjoy better speed and performance. 

These digital protocols have more to offer for RC vehicles. We have just touched the surface. With an in-depth analysis, we will discover how one makes the vehicle perform. 

Although ibus stands out in terms of numbers for the right choice. Do not ignore sbus, it has some good features too.

All you need is a little look!

Ibus Vs Sbus: Quick Comparison

Features ibus sbus
Transmission Send and Receive Data Send Data
Baud Rate 115200 bps 100000 bps
Signal Uninverted Inverted
Channels 18 16
Speed Faster Slower

Ibus vs sbus – Detailed Comparison

There are different factors that differentiate ibus and sbus protocols. Looking at the ibus sbus compatibility areas, we will go deeper into the comparison. 

Transmission

As you can see, ibus can handle more transmission than sbus. Ibus has the power of being able to handle multiple motors. It can both send and receive data within a single connection. 

The ability to handle multiple motor pressure depends on the number of poles. 2 poles and 4 poles motors have different magnetism. Ibus performs well handling any magnetism.

On the other hand, Sbus is able to send data only. Sbus is a one-way transmission protocol which means it can only handle transmitter signals

Sbus has a transmission delay of 10 to 20 ms whereas ibus performs better with 7 ms. Ibus and sbus both control digital signal transfer from receiver to servos. 

Although Sbus functions less efficiently compared to ibus, you may still consider sbus. This is because the sbus works well with certain servos. In this case, you would want to know how to connect servos to sbus receiver. 

Usually, you don’t need multiple servo connections, one servo is enough for you. This is the reason why Sbus is more suitable. At the end of the day, you want your RC vehicle to cover more distance. 

The one-way signal allows the vehicle to cover more distance. 

Baud Rate

Sbus has a lower baud rate than ibus. However, the difference is only 15200 bps. Faster baud speed means better response to the receiver.

You will experience a bit more comfort in your receiver handling with the ibus protocol.

For the sbus protocol, it is running more distance, but not performing in terms of baud speed. 

This is if you are comparing Sbus to Ibus. If you are comparing it with PPM, Sbus does a better job. This is because PPM provides analog signals and Sbus is digital.

There is a reason why we are bringing PPM into the comparison. With the ibus vs sbus comparison, understanding PPM can give more insights. 

Suppose, you have a receiver and transmitter with a larger cable length. Then it is generally advised to use an analog protocol. 

You have to reduce your cable length if you are using the digital protocol. This is because anything over the baud rate of 76,800 makes the cable sensitive. 

To look at the  difference between sbus and ibus, we have to see frame performance. Both being digital, the Sbus protocol is active low. Sbus, therefore, is able to handle noise better.

If you are experiencing a buzzing sound from your receiver, the sbus protocol would eliminate the problem. 

Buzzing noises can be eliminated in many ways. One of the ways is to adjust the esc to the receiver. 

However, if the cable length is too long, the sbus may struggle to handle noise. With digital protocols, longer cables become more sensitive. 

Signal

Ibus signal is uninverted. This means it can fit any chips that you are using. Ibus further possesses the advantage of having both active low and active high signals.

Sbus is only active low and is inverted. Inversion means the sbus protocol requires certain inverters to show good performance. F1 and F4 Arm chips are available to suit the inversion of Sbus.

In this context, Ibus has an extra advantage over Sbus. Inversion is not cheaper since you have to spend extra on inverters. 

Since Sbus is a one-way protocol, latency issues are more common. Latencies can cause problems for the receiver. In some cases, you may lose control of the remote control.

This causes the vehicle to collide while running. 

Channels

As a remote control racing lover, you may know that the receiver and the controller are wired. The wired connectivity is treated among several channels.

If you are using PPM, which is analog, there is only one channel. While comparing Sbus vs PPM, with digital protocols, we can use multiple channels. 

Digital protocols don’t need more than one wire. With that, ibus can accommodate 18 channels and sbus can do 16. 

The number of channels is directly related to the baud rate. Ibus has more baud rate because it has extra two channels. This makes the ibus allow better receiver response. 

Some transmitters do not need that many channels. Brands like Flysky need only as many as 10 channels. 

There are several models of Flysky that use 6 to 10 channels. See how Flysky or Frsky performs.

Other brands like Radiolink or Futaba offer 7 and 3 channels respectively. So, whatever protocol you use, ibus or sbus, you are faced with the same performance. 

Speed

Due to the higher baud rate, the receiver speed of ibus is higher than sbus as well. With more speed, the receiver is able to allow the vehicles to go faster. 

The speed of the receiver protocol is determined by how much lag there is. Ibus has a lesser lag experience than sbus. So, ibus becomes more favorable in terms of determining the highest speed of the vehicle. 

Different brands of receivers with different channels assist different speed ranges for the vehicle. For example, the Spektrum AR620- Sport Receiver comes with six channels and assists in a faster speed. 

As you can see the difference between ibus and sbus is very minimal. Both the digital protocols are losing out on telemetry. 

The PPMs have good compatibility with the built-in function of radio controllers called telemetry. 

Telemetry can help you to receive data in terms of speed and battery voltage. Having a GPS chip would allow tracking GPS locations. Sbus and Ibus are missing out on this feature. 

Most of you remote-control racing lovers would desire to know the actual speed. Sadly, with the digital protocol, you are missing out on the vehicle speed data.

Either way, it is better to invest in digital protocols as they are more efficient. 

FAQs

How expansive are inverters?

Inverters are not that expensive, they come at low prices. However, ibus has a two-way transmission. So, you don’t need to pay extra on inverters by using an ibus protocol.

How dangerous is more latency?

Latency can be handled with proper control. It is not so dangerous, but you would want your vehicle to not break down. You just need to be a little careful while controlling. 

Can I get more speed with sbus?

Comparatively, sbus can ensure less speed than ibus. It doesn’t affect handling though, if you can control better you can gain enough speed. It all depends on your experience. 

Conclusion

Hope you have gained enough information with the ibus vs sbus comparison. With this knowledge, you will be able to set up your receiver accordingly. 

We wish you all the best with your remote control experience!

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