It seemed every child wanted one, schools banned them, and there was a media frenzy over some of the cheaper models that lacked protection circuitry for their li-ion batteries and thus had a tendency for self-incineration. Casting around for a source of cheap and relatively powerful motors he lit upon the self-balancing scooters, and waited on Craigslist for the inevitable cast-offs.
His resulting purchase had two W brushless hub motors and all the associated circuit boards for motor control, gyroscope, and oddly a Bluetooth speaker. His write-up of how he did it is an interesting primer in logic line detective work. Hooking up his logic analyzer he was quickly able to rule out the possibility of the control signal being PWM because all signals followed the same timing.
Both lines had data so he was able to rule out I2C, for in that case one line would carry a clock. Each packet had a multiple of 9 bits so he either had 9-bit or 8-bit with parity, and trying all possible parity schemes resulted in parity errors.
Therefore the boards used a highly unusual 9-bit non-standard bitrate serial port. Some experimentation led him to an Arduino library, and he was able to get some movement from his motors. Some clever timing detective work later and he could make them move at will, success! We have featured a replica made as an unrideable floating artwork though, and a working board that is more of a personal hovercraft.
Do you have torque at low speed with such a system? I would like to use it at a brushless platform for a robot lawn mower. The motor control board could be used to power a similarly sized shaft 3 phase DC motor with hall effect sensor feedback though.
The hub motor windings are 0. Most of the hub motors that I have seen are a planetary gear set around a central 3 phase dc motor. So it would be a lot of work but you might be able to change the planetary gear ratio to have higher torque. Electric motor tend to have the same torque all the way regardless of the rpm. They will increase the amps until it reach the requested speed or blew the electronic —whichever sooner. Usually the controller have some sort of protection against the later.
Speed is not an issue with a lawnmower! I need to reconfigure the hoverboard battery pack to 12 volts. What I would like from you is the info necessary to run the wheels on 12 volts and any consequences that result from doing it. Fun fact: In some european countries — e. Germany and Switzerland — these things are completely illegal to operate.
Well that sucks! So having a technical approval for brakes is not good? Who controls them then? Most regulation is there for a reason. Besides, you can do whatever you want in your property, what else do you want?
Broken Hoverboard to Free Electricity Generator
I think the bigger and underlying issue here, is that people believing in the fallacy of free market think the market would self regulate: in this case if somebody has an accident with one of these things because of faulty brakes, then he would sue the company or something, maybe be on the news for 3 seconds.Username or E-mail. Forgot your password? Hoverboards are popular because of the convenience they provide but also their speed.
Compared to scooters, just how fast can hoverboards go? The Hovertrax DLX 2. There are other hoverboards that may reach speeds exceeding these limits but sometimes the safety of those products is questionable. Although those listed for the Hovertrax models are the operating speeds, how fast a rider should go depends on their age, skill level, and comfort being on the hoverboard.
Whereas, an experienced rider will feel carefree at higher levels. It all comes down to the individual and what they want out of their hoverboard experience. There are several factors that contribute to hoverboard speed, such as rider weight, roadway conditions, and the level of battery charge. Hoverboards have a recommended weight limit in order to operate properly.
For example, the Hovertrax weight limit range is from lbs. The rider weight maximum is a guide per person. There should never be more than one rider on a hoverboard at a time.
Heavier rider weights may lead to slightly slower rides than when someone lighter is onboard. Too much weight can affect the battery charge as well. Roadway conditions are another contributing factor that affect speed. Bumpy, rough surfaces put you at an increased risk and can cause damage to the undercarriage of the hoverboard. Also, as tempting as it may be, resist splashing through water puddles or mud. This will definitely slow down the speed. If the hoverboard becomes immersed in water, the electrical and drive conditions could be damaged.
All Hovertrax models have a hoverboard battery life of at least 45 minutes up to an hour for the 2. A low battery will result in slower speeds. Take care in charging the battery after every ride.
The initial charge time is six hours before taking your first ride. The maximum recommended time to charge the battery is 24 hours. Remember to unplug the charger when not in use and switch off the hoverboard when not riding. Consider all of these factors as you think about how fast you want to go. Encourage children to start at slower speeds so they can truly get a feel for the hoverboard and understand how it operates.
This kind of power requires control that takes getting used to, especially when there are no handlebars or brakes to rely on. To go faster, press the foot platforms at a greater angle and reduce the angle to slow down. Exaggerated leaning could make you lose your balance and lose control of the hoverboard altogether.
Finally, when considering hoverboard speed, follow the rules of the road and all legal and public policies. A busy boardwalk may not be the best place to cruise at your fastest; whereas, an empty park area could be the perfect place. Use your best judgment before becoming a speed racer. Fast speeds are exciting but so are the many other hoverboard features like uninterrupted ride time thanks to a long battery life.
Razor holds the patent for the original hoverboard and is the first U. Yes, speed is one of the biggest draws to riding, but hoverboards are a blast no matter how fast you go.
Kids and kids-at-heart love the thrill of stepping onto a hoverboard and speed is only one part of the fun.In this Instructable you can see how to make a generator at home easy. Covert a broken hoverboard motor and a fitness bike to a homemade electricity generator.
I hope you can use it to make your own project better. It is a very easy and fast to make project. I used some recovered parts like the hoverboard motor and the bridge rectifier. The motor mount frame is easy to make, intall and remove.
With this setup you can produce electricity and stay fit :! The frame will be mounted on the bike replacing the transportation wheels, no other modification is needed. The 36v w motor from the hoverboard can produce AC current. I soldered the 3 wires from the motor to a bridge rectifier recovered from a car alternator. This way I obtain DC current.
I then conected it to a Solar Controller and a 12v car battery.
Low RPM with Hoverboard hub motor
Without or with minimum load it can produce 60v at the maximum rpm I could spin it. At a normal low pedaling speed it can produce Amps and I checked the rpm with a tachometer and at rpm the motor can produce Amps and 16Volts. If you attach another hoverboard motor, could you get double the power?
Or it would be too hard to run? More by the author:. First remove one motor from the broken hoverboard. Build a simple frame from square steel pipe to fit your fitness bike.
The motor frame can be removed and the bike can be used for the original purpose Use a steel spring between the bike frame and the motor frame to keep the two wheels in contact. The motor spins harder for 10 amps but the pedaling rate is not very hi.
To improve it some gears can be added to the bike, this way pedaling will be faster but easy. I hope this will inspire and help you with your projects!! Participated in the Trash to Treasure View Contest. Did you make this project? Share it with us!The Gyroor G-F1 Hoverboard is a speedy racing hoverboard with a maximum speed of 12 miles per hour.
The end result will have four motors one per wheeltwo Xbox potentiometers as throttle and brake triggers, and two push buttons to turn on and off each motor controller independently for FWD, RWD, or AWD. Multiply the RPM of your motor by your golf cart's tire radius in inches.
Brushless motor delivers 5,RPM and provides longer motor life. Integrated is also a smart ultra-programmed speed settings of 3 speeds with a choice of eco, standard and to reach maximum speed!. Several Tests have shown, that short-term exceeding the max. The connecting rods were borrowed from the 2JZ-GE and the injectors are cc.
Peak torque: 25 Nm. So I'm wondering if it will spin at k rpm at rated current kind of says so on site. There are cheaper models on the market though. Figure 1 shows. Redesigned for improved performance, this motor can handle more heat buildup and now has tougher coil protection and a harder steel alloy to prevent gear stripping. The minimum RPM is ; the maximum is Or, in this case, 16, x 1. Max shaft size 42 mm 11, rpm. The upper RPM limit usually includes a 1.
You can reverse the direction of rotation by reversing the power supply connections use caution as the motor casing is tied to Common. Testing torque of a W hoverboard motor attached to a FOC capable inverter board. Magnetic sensor has a maximum measuring distance of 0. Maximum current is Amps.
The previous owner told me it likes to cruise at There are separate settings for forward and reverse motor operation. They come with a wider operating range than most toy motors: from 4. Johnny Amicci 78, views. There is a very easy way to disable the governor. Shaft torque has been measured at lb-ft at zero RPM.
Other notable features of the Caterpillar K motor grader include:. The Hovertrax DLX 2. Welcome to the Internet's premier site for boat motors! This site is part of iboats. The problem is your wallet. It's currently a bit busy. The motor speed for AC motors can be caculated with the Motor speed calculator. Fault bluetooth board hoverboard: The presence of audio speakers in your hoverboard is a nice option. The hoverboard includes four hover engines each including a motor.
Example vehicle design criteria:. Mirrorball Motor up to 20cm Speed: 1.Hello everyone. The motor has 27 stator poles with 30 magnets, it's sensored with hall effect bipolar latched sensors. Many thanks! Run one without any issues many times, seems to saturate at around 20A, should only need about 2A to run. Can you share your settings with me? I'm not an engineer, so I may be mistaken.
I misused prototype given by a customer for very different purpose :D Goal was to test feasibility of hoverboard motors for specific application and it worked. I did not had time to investigate. Problem might be voltage, I think when they spin fast, they can produce very high voltage. An inversely, you need very high voltage to spin them fast. One solution might be so reconnect them in delta instead of WYE.
I do believe they are WYE by default. But do not take me seriously, verify this by yourself. I also tried them to run in simple BLDC mode with sensors, but they sound terrible. At low speed you can clearly hear the commutations. Did you find a pinout of the hall sensor wires? I think the red may be ground and black may be positive on my 8.
Hoverboard Motor with VESC
Obvious thing, I know, but I got my hoverboard motors working perfectly the other day on hall. Then I went back to the project and they wouldn't work smoothly, wouldn't re-detect the sensors etc, turned out one of the pins for the sensor was loose in the connector.
Worth checking. Skip to main content.My goal is to reach the slowest possible RPM with closed loop control. The thing that strucks me the most is that with an open loop duty control at D 0.
Although that is open loop control as well. My question: Is it possible to reach similarly slow speeds with closed loop control as in open loop, and if it is how should I tackle this problem?
For full disclosure I am using a run of the mill chinese "Based on Genuine" clone. Even try to tune the PID gains but still the movement is not as smooth as Duty cycle.
And if you set a high current, you waste energy. This is way more efficient. But setting the PID position parameters may be hard depending on your mechanical config. If you don't need a very accurate speed control and your motor has plenty of torque, you could use Duty Cycle mode and possibly compensate for torque by increasing slightly Duty when current increases - to compensate resistance voltage loss - can be done in a custom app, I posted a code example some time ago.
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Reverse Engineering Hoverboard Motor Drive
Low RPM with Hoverboard hub motor. Log in or register to post comments. Last post. Wed, Last seen: 4 months 2 weeks ago.
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Thu, Last seen: 2 weeks 4 days ago. Posts: But setting the PID position parameters may be hard depending on your mechanical config If you don't need a very accurate speed control and your motor has plenty of torque, you could use Duty Cycle mode and possibly compensate for torque by increasing slightly Duty when current increases - to compensate resistance voltage loss - can be done in a custom app, I posted a code example some time ago.From time to time, chargebacks are received and these will be treated in accordance with BetBull procedures.
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