HTB1yfYrHVXXXXcPXFXXq6xXFXXX4/3-axis-TB6560-3-5A-CNC-engraving-machine-stepper-motor-driver-board-16-segments-stepper-motor.jpg' alt='Stepper Motor Controller Using Fpga Engineer' title='Stepper Motor Controller Using Fpga Engineer' />Stepper Motor Controller Using Fpga Engineer JobsThe TL594 PWM Controller incorporates all the functions required in the construction of a pulse width modulation PWM control circuit on a single chip.Desig. Review Monoprice MP Select Mini 3.D Printer. 20. 16 is the year of the consumer 3.D printer. Yes, the hype over 3.D printing has died down since 2.There were too many 3.D printers at Maker Faire three years ago.Nevertheless, sales of 3.D printers have never been stronger, the industry is growing, and the low end machines are getting very, very good.Printers are also getting cheap.At CES last January, Monoprice, the same company you buy Ethernet and HDMI cables from, introduced a line of 3.D printers that would be released this year.While the 3. 00 resin based printer has been canned, Monoprice has released their MP Select Mini 3.D printer for 2. This printer appeared on Monoprice late last month.My curiosity was worth more than 2.Hackaday readers get a review of the MP Select Mini 3.D printer. The bottom line There are some problems with this printer, but nothing that wouldnt be found in printers that cost three times as much.This is a game changing machine, and proof 2.D printer. Boring Specs.Master LEGO builder Yoshihito Isogawa has been on a roll lately, cranking out a number of robots that make drawings reminiscent of the classic Spirograph.Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online.Easily share your publications and get.PyroElectro. com brings you cool projects that you can build at home, improve upon or just drool over.Each project has a full write up with all details.NjUwWDY1MA==/z/GsIAAMXQydtTMcK-/$_1.JPG' alt='Stepper Motor Controller Using Fpga Engineer' title='Stepper Motor Controller Using Fpga Engineer' />The standard Buddha from kim.This print exhibits Z banding, but thats an issue with the slicer Cura, and not the printer.The spec sheet for the MP Select Mini boasts a 1.Astonishingly, this printer lists Cura, Repetier Host, Replicator.G, and Simplify. 3D as the compatible software.This means that it speaks normal G code.Monoprices MP Select Mini doesnt require special filament, and it can use the standard Open Source 3.D printing software.This is in stark contrast to the XYZPrinting da Vinci from 2.The da Vinci uses chipped, DRMed filament, and a proprietary interface instead of standard G code.The MP Select Mini doesnt pull any of these tricks, and is a minor miracle for a 2.Like most of the name brand printers found at CES last January, this printer is a rebadge of something already being made somewhere in China.The most likely suspect for a manufacture is a company called Infitary.You can buy a printer nearly identical to the Monoprice MP Mini on Ali.Express right now, and it doesnt seem Monoprice added anything special to this printer.Judging by the spec sheet, Id guess Monoprice doesnt even know what they have on their hands here.The real specs for this printer are actually better than what Monoprice has published.This printer is capable of a layer height much smaller than 1.Prints. The first layer of Wades Gear.The 3. D Benchy. With this print, the printer demonstrated issues in cooling the filament and overhangs.Before showing off the prints the Monoprice MP Select Mini can produce, I must mention a simple fact sample prints are not indicative of the quality of a printer.A 3. D printer is just a CNC machine, and most of the work in turning an STL file into a real object is done by the slicer.That said, there are a few things you can tell by looking at a few 3.D print samples. Z axis wobble can be easily identified by looking at straight vertical walls.The ability of a printer to control the hotend temperature and use the fan can easily be seen in overhangs.My first few prints were of Benchy, the tugboat 3.D benchmarking tool.While not perfect, out of the box and with the recommended Cura settings, this printer produced a Benchy that is at least equal in quality from any other uncalibrated printer.With a little work in getting the right settings, I can see this printer producing Benchys that are at least equal to those produced by any other mid range printer.There is one glaring issue with the Monoprice MP Select Mini the temperature control loop for the hotend is terrible.My printer has 5 degree temperature swings over a period of several minutes, and this has been seen in other reviews of this model.The reason for this is an uncalibrated PID loop.Nearly every printer firmware has a PID autotune function that clears this problem right up.The firmware for this printer does not have a PID autotune function as far as I can tell.Are the prints made on the MP Select Mini good Yes, they can be.The MP Select Mini has a few problems, but none that wont be easily fixed by the 3.D printer community in a few months.Teardown. This printer is built down to a price.The strange thing is, this fact really doesnt show until you start taking it apart.The chassis is all metal, the X and Y axes are belt driven on 6 mm rods, the Z axis is leadscrew driven, and theres really not much to write home about.The printer is built solidly, and I can easily foresee it standing up to a lot of abuse.Back cover off NEMA 1.Z The bottom guts The Motors and Mechanics.The standard for all 3.D printers, from the cheapest flea.Bay specials to the high end Lulzbots and Ultimakers, is stepper motors.If you have a 3. D printer, chances are you own four or five NEMA 1.Are they the best solutionThats arguable, but its the standard.The MP Select Mini bucks this trend with a circular, non NEMA motor on the Z axis.The Z axis is leadscrew driven with an M4 threaded rod.Its weird, and the Z axis is tremendously slow.This, however, is a selling point Monoprice failed to mention.Because the Z axis lead screws thread pitch is so fine, this printer can produce objects with a very, very small layer height.Prusas calculator gives a very low theoretical minimum layer height for this setup.The minimum layer height is not 1.Monoprice is underselling the capabilities of this printer.It does mean Z axis travel is very slow, but that really doesnt matter.The Electronics. Here is where the MP Mini Select shines.If youre looking for the one game changing feature of this printer, its the controller board.Before I broke out the hex wrenches for the teardown, my only impression of the firmware and electronics came from watching the test prints being built.There was something very different about this machine the acceleration.The acceleration ramp when travelling from one end of the bed to another is like nothing else Ive ever seen on a 3.D printer. It was smooth, precise, and almost beautiful to watch.I figured this was custom firmware.It was, but thats only half the story.The electronics board for this printer is a 3.ARM Cortex M3, a vast improvement over the 8 bit ATmegas found in almost every other 3.D printer controller.The brains of the entire printer, an STM3.F1. 03 microcontroller.D printers have finally arrived.This printer is an exercise in how inexpensively you can produce a printer, and these efforts clearly show in the electronics board.There are only six chips on this board four HH4.I assume off brand clones of the popular A4.LCD, and the microcontroller, an STM3.F1. 03 microcontroller.Yes, 3. 2 bit printing is finally here.It is impossible for me to understate the importance of the ARM microcontroller in this printer.Until now, with the exception of the Smoothieboard, the vast majority of 3.D printers have been built around ATMega microcontrollers.This is understandable given the historical context the first Rep.Raps were developed around 2. Chevy Cruze Boost Gauge Install Miata here. Arduino was very big at the time.D printer controller boards were developed around these 8 bit microcontrollers, and development continues to this day.Everybody recognizes that ARM microcontrollers are the future of 3.D printer control boards.ARM micros are cheaper the STM3.F1. 03 on this printer board is half the price of the standard ATMega.AT9. 0USB found in every other printer controller.ARM chips are more powerful, allowing for smoother acceleration.ARM micros are just a better solution to the problem.Despite these obvious realities, thousands of people have been working on 8 bit controller boards for the better part of a decade.Theres a lot of technical debt to pay off in the Open Source 3.D printing world.This technical debt was just paid off by a random embedded dev in China.If you want to see the future of 3.D printer controller boards, all you need to do is buy a 2.China. As far as the LCD and controls go, theyre exactly what you would expect.Its a full color TFT, most likely the same model used in an old non smartphone, with a single rotary button.I believe the LCD and button assembly connect to the printer board over SPI.The controls allow the user to load a file from the SD card, move the axes around, and set the temperature.Its the bare minimum, but you dont really need much more.Heated Bed. On most consumer 3.D printers those that have a heated bed, anyway youll find a PCB heat bed screwed or clamped to an aluminum or glass plate.This is the standard.