Showing posts with label dc motor. Show all posts
Showing posts with label dc motor. Show all posts

3D Printable DIY 600 Watt Halbach Array DC Motor

Christoph Laimer, well known for his 3d printable motor designs, developed a new and more powerful DC motor. It has 600 Watts of output power and performs with more than the 80% efficiency. The magnets of the rotor are arranged as a Halbach array and the motor runs with a standard ESC widely used in different RC applications (plane, drone, car etc.).

This project is a perfect example how you can use 3d printing for some ver powerful and practical printable objects. This is not just another fidget spinner, THIS ROCKS!!!


Presentation video:





Construction tutorial video:





Testing with the propeller attached:




Project homepage where you can buy the files for 10 USD (well worth when you see how effective this design is):

https://www.makesea.com/web/cla/~/50612/profile/-/asset_publisher/Rl6cqGtVw4Vb/content/660-watt-3d-printed-halbach-array-brushless-motor

Very detailed step-by-step Instructables page:

http://www.instructables.com/id/600-Watt-3d-printed-Halbach-Array-Brushless-DC-Ele/



3D Printed DIY 1/16 Ratio Gearbox for DC Motors

Tomi Malkki made a 1/16 ratio 3d printed gearbox that he uses to modify torque and RPM of salvaged DC motors.

Project description with gearbox specs:

This gearbox has the ratio of 1/16. With this 12v motor it can lift around 3,5kg (straight from the shaft.) 2 washers should place between each gear (see details in video). It reduces heat between plastic parts when 2 washers are rubbing each other. Adding lots of bearing grease between everything is essential. Depending on your printer tolerances you might need drill out some holes bigger. Motor mount should be standard size.

Gears:

  • layer 0.2
  • infill 25%
  • perimeters 3
  • bottom layer 2, top 3

Covers:

  • Layer 0.3
  • infill 20%
  • perimeters 2
  • bottom layer 2, top 3


Here is the assembly video:



He also cleaned all the surfaces with oil and dirt cleaner, then added a layer of primer, 2 layers of surface paint and 2 layers of clear lacquer, he is using acrylic spray paints.

This is a very useful DIY project that can power many small projects like RC vehicles or robots.

All the files and instructions can be found at:

http://www.instructables.com/id/3d-Printed-Gearbox-for-Small-Dc-Motors/

Thingiverse page:

http://www.thingiverse.com/thing:2227131



Christoph 3D Printes a Brushless Motor to Power his Flying Wing

Christoph Laimer designed and made a very functional DC brushless electric motor.

Here is a test of his 3d printed brushless motor, it explodes above 30000 RPM:




Project homepage with data and files:

http://www.makesea.com/brushless-motor


He used this motor on a DIY RC flying wing with success. He even developed and 3d printed the propeller.




Here is a link for the propeller page.

3D Printed PMG Generator for DIY Wind Turbines

Brian developed a 3d printable DIY PMG generator ideal for producing electricity from small wind turbine.
You will need some disc magnets and copper wire, but you will get a functioning generator. It can produce up to 50 watts at high RPMs.

Here is the generator being assembled and tested:




Here are four generators mounted on a modular multi-blade wind turbine in a strong wind:



The files and manual are not free, but come at reasonable 35 USD:

http://www.energy-creator.com/3D-generator-1.php

There are several other non-printable DIY generators on that page so it's a good resource for anyone interested in home-made wind power.

If you are looking for larger DIY generator of the same type for bigger diameter wind turbines, there is a complete manual in PDF format that can be found at:

https://www.scoraigwind.com/pmgbooklet/itpmg.pdf (remember to click the captcha that you are not a robot).
It gives out much more power, but you will need some heavier woodworking, bigger magnets, resin and longer blades and higher tower.



High RPM 3D Printed RC Brushless Motor

Here are two DC brushless motors 3d printed for RC cars applications. They reach 36000 RPM and 42700 RMP.

Here is the first version which exploded due high RPM and centripetal forces of magnetic mass:




Here is improved version that reaches even higher RPM:



You can learn more at:

http://sgabolab.altervista.org/thunder-brushless.html



Functional 3D Printed Stepper Motor

Proto G published his detailed guide on how to build a 3d printed stepper motor. It is probably not as good as standard ones but it looks very usable for simpler projects.

You will need an Arduino, copper wire, magnets and other non-printable parts but you probably guessed that part.


Here is a video introduction:





Detailed build guide and all the files needed:

http://www.instructables.com/id/3D-Printed-Stepper-Motor/

Great work Proto G!




Working 3D Printable Brushless Pulse Motor

Nathan Matthews developed a 3d printable DIY brushless pulse electric motor.




Technical details:
  • Running on a 3.7v lipo battery - will run on 1V although very slowly
  • 5 x 2 magnets all facing north (out)
  • 10 coils in alternating North / South arrangement - alternate "pushing" and "pulling" coils
  • Small diode dropping the voltage .7 to prevent feedback

Motor in action:


Powerful 3d printable robot arm for your future home manufacturing robotic cell

If you thought that 3d printed robots are just toys, think again! Here is a strong and powerful 3d printed robotic arm with gripper that is based on well-known (I'm not sure which :-)) industrial version.
It is well documented and constantly updated. It comes in "blue" and "orange" version, the blue uses stepper motors, the orange DC-motors. Encoders provide 12 bit resolution with an arm length of some 500mm. That results in less than 1mm accuracy (more realistic is 2mm).

The arm is developed by Andreas Hölldorfer, a master student at the Karlsruhe Institute of Technology (KIT). Great work Andreas! You rule!

Definitely not a toy. Power and strength. I wonder is it precise and fast.  Is it durable and serviceable. Source: hackaday.io

Your coffee is served master. Source: hackaday.io





Here is a video playlist that goes trough development process stages:



Hackaday.io project page with additional information, build log and updates:

http://hackaday.io/project/3800-3d-printable-robot-arm

Thingiverse and GitHub with all the files:

http://www.thingiverse.com/4ndreas/collections/printable-robot-arm

https://github.com/4ndreas/BetaBots-Robot-Arm-Project

Project blog:

http://chaozlabs.blogspot.de/2015/01/3d-printable-robot-arm.html

Since the design is publicly available and looks relatively easy to make, I can see it as a part of future home manufacturing cells. Or as a personal assistant. You choose ...

Update:

Here is the latest development of this arm with many improvements.



Update 2:

Here is a new design of the robotic arm: the Mantis arm.

Here is the video of the robotic gripper:


Here is the parts list, more information and files for download:

http://chaozlabs.blogspot.com/2016/04/mantis-robot-arm-part-1-gripper.html

http://www.thingiverse.com/thing:1480408


Using DC motors to replace steppers on x and y axis

Here is a new project of running a 3d printer with cheap DC servo motors. It was developed by misan from Spain and he used it successfully on x and y axis of his Prusa I3. Dc motors are controlled by Arduino Uno and the project is based on "servostrap" project. DC motors are cheap and can be found and salvaged in recyclable or scrap electronic device such as paper printers and others.

He made the code and bracket designs available. Thnx misan!

DC servo motor powering y axis of Prusa I3






























You can find all the files and code here:

https://www.youmagine.com/designs/dc-motor-closed-loop-control-software

http://www.thingiverse.com/thing:618042

Here are the files for y-axis DC motor drive:

http://www.thingiverse.com/thing:620183


Here is video of stepper motor and servo running together:




Here is a video of DC servo motor powering the x-axis:



Here is a video of DC servo motors powering the x- and y-axis:



Project description:
This program uses an Arduino for a closed-loop control of a DC-motor.
  • Motor motion is detected by a quadrature encoder.
  • Two inputs named STEP and DIR allow changing the target position.
  • Serial port prints current position and target position every second.
  • Serial input can be used to feed a new location for the servo (no CR LF).
Pins used:
  • Digital inputs 2 & 8 are connected to the two encoder signals (AB).
  • Digital input 3 is the STEP input.
  • Analog input 0 is the DIR input.
  • Digital outputs 5 & 6 control the PWM outputs for the motor (I am using half L298 here).
  • Please note PID gains kp, ki, kd need to be tuned to each different setup.

How to 3d print a brushless DC motor





Patrick Eells designed and printed fully functional brushless DC motor. You can use any FDM DIY 3d printer, but you will need magnets and wind some copper wire coils.
The motor was designed as a 3-phase, 4-pole brushless DC motor with 4 - N52 neodymium magnets on the rotor, and 3 wire wrapped solenoids connected to the stator. The motor is controlled by Arduino. The total cost to build this motor without the Arduino micro controller and the batteries was 27,71 USD.

Excellent project!

Very detailed guide can be found here:

http://www.instructables.com/id/3D-Printed-DC-Motor/?ALLSTEPS

All the files and guide in PDF format can be downloaded here: http://pitt.edu/~pfe3/3DPrintedMotor.zip




There was a stepper motor printed in the past, but it was printed on commercial grade printer:

http://diy3dprinting.blogspot.com/2013/11/working-3d-printed-diy-programmable.html

RepScrap DIY 3d printer from salvaged InkJet parts made by Michael Ball

Michael Ball decided to make a 3d printer from discarded printer and scanner parts like some people before him. His build process is very well documented and very educational especially about motor and electronics configuration.  One of the projects goals is to create a 3D printer using DC motors and the salvaged Optical Encoder strips.You will also find his Arduino driver code on the project site.

The total cost of purchased parts for the build is around 355 USD. There are some low cost printers available for the same or lower amount, but this one has bigger print surface and the joy of building it.

Great work Michael!





Here is a video of RepScrap X-Axis DC Motor and Linear Optical Encoder repurposed from an old InkJet Printer. Arduino Pro-Mini is running the DC motor, and reading the high resolution Linear Optical Encoder for positioning.

ServoStock Delta 3d printer powered by servos and Bowler protocol





This Delta is heavily modified Kossel derivative which uses DC motor powered servos instead of stepper motors developed by team led by mad.hephaestus.

On each axis is a small board containing a magnetic encoder, and a continuous rotation servo. With this setup, the makers are able to get 4096 steps per revolution with closed loop control that can drive the servo to with ±2 ticks.
The electronics and firmware are fully redesigned configuration when compared to the usual 3D printers. The motherboard uses a Pic32 running at 80MHz. In parallel with hardware, the communication between the host and printer has been completely redesigned, instead of g-code, the team is using the Bowler protocol for sending packets over serial, TCP/IP, or just about any other communications protocol you can think of.

The final aim is to create much cheaper powerful 3d printer that would cost in 200 - 300 USD range.

Project on hackaday.io:

http://hackaday.io/project/962

GitHub repository:

https://github.com/Technocopia/ServoStock




There is lot of discussion on the project page and on hackaday about viability of this technology. I don't know much about all the stuff they use, so it will be lot of new stuff to learn. Maybe it will be the standard in the future.

Here is a video about closed vs. open control systems:



Here is a link about differences of DC vs. servo vs. stepper motors:

https://www.modmypi.com/blog/whats-the-difference-between-dc-servo-stepper-motors






Rappy 3d printer powered with DC motors by Stellamove





Rappy is very stable since it has position feedback:





Rappy has auto leveling built in:





It can also plot in 2d, which is good for making PCBs:





RAPPY (Rapid Advanced Precision Print sYstem) is a 3d printer which is powered by DC motors instead the usual stepper motors.

Stellamove claims:
We achieved quantum leap in DC motor control.

DC motors are also commonly found inside toys, because it is cheap and powerful in spite of its small size. Of course, toys are not keen on precise control. So, how do we achieve a high accuracy such as in sophisticated robots? It is only possible with sophisticated controller, which also costs pretty expensive.
Well, that's yesterday.
What we have achieved with RAPPY is precise DC motor control with simple system. We developed revolutionary software and embedded it into a very simple hardware which eventually works like a machine worth thousands of dollars. This is literally a quantum leap in DC motor control. No other system today achieves an accuracy of RAPPY under such a simple architecture.
Now, we are opening a new robot age with DC motor.

It is priced at $699 (tax and shipping not included), if you are first in line for main production delivery. The estimated delivery time is in July 2014.

http://www.stellamove.com/

They had relatively unsuccessful Kickstarter:

https://www.kickstarter.com/projects/1222995568/rapy-the-worlds-first-dc-motor-3d-printer 



Rappy 3d printer technical specification













If you want to know more about difference between DC and stepper motors take a look at:

https://www.modmypi.com/blog/whats-the-difference-between-dc-servo-stepper-motors

Update (21.8.2014.):


Here is video from Stellamove of anti shock feature and print stability of Rappy32:





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