Brushless motor esc

This instructable will show you how to configure and run a brushless motor ESC with an arduino and run a brushless motor at different speeds. It will go through the materials, setup of hardware, and the software coding. It will explain what each step in the coding does.

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Don't get hurt and have fun! Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. The middle wires have to go together, but the 2 side wires can be switched to reverse the direction of the motor.

Finally, you need to use the soldering iron to warm-up the wires, this should take about seconds, then melt the solder on the wires to bond them together. The positive wire should be connected to vin ONLY if the arduino is not connected to the computer.

If it is connected to the computer, do not attach the positive wire to anything or it will burn out your your computer. Then, you can download the below program. After the program is downloaded, press the reset button on the arduino before plugging the battery into the ESC.

brushless motor esc

The motor will make a start up noise, then it will wait. After a few seconds, the motor will beep 3 times and then gradually move to the speed programed. It will then gradually move back down to zero speed.

You can edit the program for how fast the motors go and how long they stay on. Hi, this is the first time I'm using a brushless motor. Is it possible to make the motor spin in opposite direction using this method? Thanks in advance. Reply 1 year ago. I have been building model planes and drones with brushless motors. Sorry to say no you can't, not without a special esc. Reply 11 months ago. You only have to exchange two of the cables that leave the ESC and connect to the brushless motor.

If you use a switch with two poles and two positions, maybe you could change from one rotation direction to another in a simpler way. I believe that you can not change the direction of rotation energized the whole system.

You turn off, change the position of the cables and start the system again. I hope I have clarified you. Question 1 year ago on Step 3. Answer 1 year ago. Reply 4 years ago. Thanks for the comment, Bill. We took the electrical tape off for the photographs. We agree that it would be unsafe to fly without it. Reply 2 years ago. I think i did it right. For me it beeps once then 2 seconds later it just beeps over and over any guess what the problem might be.The article How Electric Motors Work explains how brushed motors work.

In a typical DC motor, there are permanent magnets on the outside and a spinning armature on the inside. The permanent magnets are stationary, so they are called the stator. The armature rotates, so it is called the rotor.

Timing Explained for Brushless Motor and ESC’s

The armature contains an electromagnet. When you run electricity into this electromagnet, it creates a magnetic field in the armature that attracts and repels the magnets in the stator. So the armature spins through degrees. To keep it spinning, you have to change the poles of the electromagnet.


The brushes handle this change in polarity. They make contact with two spinning electrodes attached to the armature and flip the magnetic polarity of the electromagnet as it spins. With the advent of cheap computers and power transistorsit became possible to "turn the motor inside out" and eliminate the brushes. In a brushless DC motor BLDCyou put the permanent magnets on the rotor and you move the electromagnets to the stator.

Then you use a computer connected to high-power transistors to charge up the electromagnets as the shaft turns. This system has all sorts of advantages:. The only disadvantage of a brushless motor is its higher initial cost, but you can often recover that cost through the greater efficiency over the life of the motor.

Inside an Electric Motor. How Nanogenerators Work. The brushes eventually wear out. Having the electromagnet in the center of the motor makes it harder to cool. The use of brushes puts a limit on how many poles the armature can have. The poles on the stator of a two-phase BLDC motor used to power a computer cooling fan. The rotor has been removed. Because a computer controls the motor instead of mechanical brushes, it's more precise.

The computer can also factor the speed of the motor into the equation. This makes brushless motors more efficient. There is no sparking and much less electrical noise. There are no brushes to wear out. With the electromagnets on the stator, they are very easy to cool. You can have a lot of electromagnets on the stator for more precise control.

Related Inside an Electric Motor.Which motor combo is right for you will depend on the RC car and type of driving you to want to do. Before you buy your Brushless Motor Combo make sure you know your RC car and how you will be running it, What kV rating, wattage, amperage and with what battery do you want to use. These are all things you need to know. Check out my RC Motors page to find your next motor. Things you need to know about getting a brushless motor combo for your RC car.

You need to know the kV rating, wattage, amperage and the dimensions of your models motor. The higher the KV rating means higher top speed but lower torque.

When you have lower the KV rating means higher torque but lower top speed. You can find this information in the instruction manual for your model or on vehicle packaging. The next thing you want to know is the motor amperage. Say your motor wattage is and your battery is a 3 cell lipo In this case, you will want to get an ESC that has an amp rating of at least 45amps.

The higher the ESC amps the better, so higher amps than both the battery and motor rating is great, You never want to go less amps than the motor is rated for, This can cause overheating issues and not get the full performance from your motor. This is also true for your battery. The battery pack amps should be higher than the motor amps.

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To Find the amperage of your battery take the milliamps mah and the C rating of the battery and multiply them and then divide by This gives you the amperage that can safely be pulled from the battery. That battery has an amperage rating of amps. Just remember the bigger the battery the heavier the battery will be.

The heavier the battery is, the less top speed your car will have due to weight. That is why it is best to find a battery that is higher than but close to your motor amp rating, This will give you the lightest option for your battery.

When looking at a brushless motor combo keep in mind what you want your RC to be able to accomplish. High top speed or high low-end torque. Maybe you want something in the middle, Then you should be looking for kV rating of around kv. Having an RC vehicle that goes higher top speed is great, However, you will lose some low-end torque which effects the takeoff acceleration.

One thing you should be aware of when getting a brushless motor ESC combo. There is a lot of misleading information on getting more power out of your RC Car with using a bigger battery. Therefore if you are using the right size battery, then switching to a bigger battery will NOT give you more power. The motor will only pull and use as much energy as it is intended to use. Even if you have more power available then the motor is rated for, the motor still will only use what it needs and is able to use, no more.In Stock.

Bolted right in and runs like a bat out of hell! Add to cart. Currently unavailable. This is my second motor. I bought the kv first for my slash, and felt I was lacking overall speed on stick gears, so I then bought this kv motor and a 19t gear. VERY fast on a 2s lipo. I had the kv motor for about 2 months and put it through a lot and never had a problem. Fully waterproof this far. I highly recommend this product if your upgrading your stock motor. See All Buying Options. In stock.

I just keep gearing up and up and it doesn't lose any torque.

brushless motor esc

It does mph and the motor temp hasn't gone over 45 Celsius on a 40 Fahrenheit day after running a whole mAh pack through it with no resting. Only 18 left in stock - order soon. Great motor if you want speed and control ability. There are faster and cheaper motors on the marketbut the ESC combo is a winner. A Little pricey in my opinion, still thou a great product. I put this motor on a helion rock rider and it just Flys. Thank you for having the some what upgrade for my rc. I was skeptical because of the cheap price tag.

Wow,I was wrong. Very good product. Went in water a couple of times still working. The ESC Easily programs with the goolrc program card.

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Sold seperatly. Servo is the only one that didnt fit.If you use brushless motors in your industry, you want to make sure they are in perfect working order at all times. Here are some tips if you are looking to test a brushless motor. The way a brushless motor works is by using electromagnets, rather than brushes, to spin the motor.

Electromagnets can also be used to generate power. When you spin a motor by hand it generates power. Many modern generators use this same process to create power.

brushless motor esc

If any two of the wires are shorted together, you will experience resistance if you try to spin the motor by hand. If you separate all the wires, the motor should have no problem spinning when hand-propelled. If you have separated all the wires you can and the motor still resists spinning, you can assume you have an internal short circuit. If your motor is spinning, but it has recently overheated or sustained damage, you may want to dry test it to see if there are any problems with it.

Here are the steps you can take to dry test your brushless motor. Disconnect the motor from the Electronic Speed Controller ESC and wind it up with a variable-speed battery-operated drill, holding the stationary part and the three lead wires isolated.

Run it at full speed for a couple of minutes. If the motor makes a strange noise or something inside the motor gets hot, you have a shorted winding or a loose magnet is hitting the stator within the motor. Label the three motor wires, making sure to continue to isolate them from one another, as 1, 2 and 3.

Now connect your voltmeter to an AC range and connect two of the wires to terminals 1 and 2. Wind the drill at full speed again and note the AC voltage. Repeat this process with terminals 2 and 3 and 1 and 3. Check for short circuits between the stator and the windings. Look for any connection between the windings and the motor stator laminations.

You will need to find bare metal on the stator for one connection to the meter and on the meter windings for the other. If you cannot find one, create one by poking through the coating of the steel laminations. If your motor passes all of these tests, it should be good to go. However, before putting it back into operation, you may want to check the no-load current of the motor and compare it with the specs provided by the manufacturer. This will allow you to identify a shorted turn in the motor or a winding that has shorted out.

If you have a shorted turn, you cannot use the motor. It will generate very high temperatures, causing the motor to fail and possibly do damage to your ESC.

Brushless Motor ESC

Naturally, if your brushless motor passes all the tests and seems to be functioning properly, you can put it back into operation, although you should still keep an eye on it and inspect it as part of your regularly scheduled maintenance.

If the brushless motor fails any of the tests, you will probably have to get it repaired or replaced. Your first step should be to contact Global Electronic Services. At Global Electronic Services, we are highly skilled at all types of motor repair, including brushless repair, and if your motor can be repaired, we can repair it.

We will replace any worn-out parts or parts that are in danger of wearing out, and return a functioning motor to you in usually five days or less. Once you get your motor back, it is protected by our month in-service warranty so you can put it back into operation with confidence.

Contact us today for a free service quote.

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Advanced Product Search Description. Search Back to Simple Search. How to Test a Brushless Motor.Some of the specifications depend on what type of RC vehicle you need the RC motors for, obviously. In fact, the best option when it comes to RC motors can sometimes vary quite a bit depending on whether it be used for aerodynamic rc planesdrones, replica helicoptersboats, cars, or offroad rc trucks.

So as you can already see finding the best option for your RC brushless motor combo will not always be straight forward. Brushed motors take into consideration factors like brushes and springs. With that being said, there is a great deal of different brushless motors that reach different KV ratings or turns. Sensored motors measure speed using the number of turns. Lower turn counts per time actually means the rotor spins faster.

You should know, KV reads the opposite way from the number of turns; higher number means faster rotors. Just remember to keep in mind what racing classes you are looking at entering into and make sure your motor is best for these classes. Information published on the different racing classes will in fact usually give you specifications for the exact motor you should use, making things a lot easy for you. Like brushed motors, speed controls are only capable of handling motors that are part of its specifications.

For example, you might find a control that handles turns of only 17 or higher. Not all speed controls can handle a high-powered, high-speed motor. A lot of these problems can be avoided however as many brushless motors on the market come with a speed control as a combination. When a motor has a sensored system, it comes with sensors that transmit precise data to the speed control.

A sensored system makes the vehicle give an accurate response to all speed changes, including tiny ones. When you think about the rotor, imagine it has marks similar to a clock face. Many people are surprised to learn how little maintenance is required for brushless motors. When you need to clean them, you can use compressed air to blow the dust and grit away.

Electric Motors

Also, to complete maintenance on a brushed motor, you have to disassemble the entire motor, clean the can, lube all of the bearings, recut the commutator, deburr the commutator, reassemble the entire motor, install new springs and brushes, break in the brushes, and test everything.May 20, Timing is critical to a brushless motors operation. Without the correct amount of timing, a brushless motor may not operate efficiently or even at all. We will be exploring timing for brushless motors in this article.

A few key focuses will be on what does brushless motor timing refer to, advantages of low and high timing, and lastly fixed timing vs variable timing. Timing is defined as the relationship of the position of the rotor relative to the exact moment when a stator winding is energized. Altering the position of the rotor at the moment the winding is powered up is controlling the timing. There are 2 ways that you are able to alter the timing of a brushless motor.

The more common and well known method of timing adjustment is done within the ESC. This method is more common with brushless motor for RC cars. Advancement or increasing the timing is firing the stator winding phase earlier in the rotational cycle of the motor. Most would think that increasing your motor timing is specifically for high performance only.

For the most part this is true, however, it is not always the case. When increasing the timing, the most general advantage that you may see is an increase in performance. Increasing the timing typically increases the amount of RPM that you will see out of your setup. Further advancing motor timing also makes it easier for a brushless motor and ESC to sync when operating in sensorless mode. Increasing the motor timing does have its share of disadvantages.

These disadvantages are described below in the advantages of low motor timing section and vise versa. A low motor timing offers the potential for a very efficient power system. Low motor timing tends to draw less current. When less power is drawn from the battery, you can expect lower overall temperatures and longer run times. In addition, low motor timing increase the amount of torque potential of your power system. If you are looking for more low end acceleration, adjusting timing to a lower amount will help get you there.

Adjustment of the end bell on a brushless motor is an example of a fixed mechanical adjustment.

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Once it is set, you can not change the timing when the motor is running, Motors that contain sensors also operate in a fixed mode of operation. Follow this link to read more on sensored motors vs sensorless. A fixed timing mode is limited as timing is best altered depending on several factors.

Factors that affect timing include motor load, motor output RPM, number of poles, strength of the inductance within a motor and several more. For this reason, the timing of the motor can actually be varied as the motor is in use.

brushless motor esc

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