Search found 15 matches

by xebbmw
Thu Sep 28, 2017 8:21 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

I'm designing it so I can plug this board: https://www.aliexpress.com/item/New-STM32F407VET6-Mini-version-of-the-core-board-STM32-minimum-system-board/32809309613.html?spm=2114.search0104.3.2.dxtgNS&ws_ab_test=searchweb0_0,searchweb201602_4_5460015_10152_10065_10151_10130_10068_10344_5560015_10342_...
by xebbmw
Thu Sep 28, 2017 8:11 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

I'm designing a board around a VET MCU and can have 8 steppers 6 fets, 4 thermistors, 2 sdcards, LCD, and have pins to spare. Do you mean here STM32F1 or STM32F4 VET board? Should work with either. There is no much difference in price between STM32F1 and STM32F4 VET. From the size point of view STM...
by xebbmw
Thu Sep 28, 2017 6:45 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

victor_pv wrote:
Thu Sep 28, 2017 4:07 pm
I'm designing a board around a VET MCU and can have 8 steppers 6 fets, 4 thermistors, 2 sdcards, LCD, and have pins to spare.
Do you mean here STM32F1 or STM32F4 VET board?
by xebbmw
Thu Sep 28, 2017 3:47 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

They do have a problem, that I noticed reading the datasheet a while back, and that github accounts mentions, confirming what I suspected: the L6470 will not accept another command until the motor has completely finished the previous one and come to a stop. What that means is that the movement beco...
by xebbmw
Thu Sep 28, 2017 12:25 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

Hi there! That's what I'm doing! :lol: I've been reading this thread and thinking that maybe we can use a low cost board holding a blue pill for the most common 3d printers (mendel 90, prusa i3, kossel delta, etc), so I made a little board with 4 stepper drivers, 3 mosfets and 2 thermistors, based ...
by xebbmw
Thu Sep 28, 2017 10:38 am
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

It should be completely possible. Is there a driver out for them for arduino spi? (without direct hw register acces like I have seen in some Trinamic drivers). EDIT: It seems that the TMC2130 still needs step/dir pins even with using SPI though. The TMC5130 or the L6470 seem more advanced in that t...
by xebbmw
Wed Sep 27, 2017 3:15 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

the other thing would be that TMC2130 seemed to be designed towards a 5v system https://www.trinamic.com/fileadmin/assets/Products/ICs_Documents/TMC2130_datasheet.pdf while L6470 it seemed would be easier to interface with 3.3v logic as it seemed to have been designed for it http://www.st.com/en/mo...
by xebbmw
Wed Sep 27, 2017 1:55 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

actually i'm half way hoping stm would sell their L6470 stepper motor controllers for less, so that perhaps there'd be 'cheaper' L6470 breakout boards https://www.ebay.com/sch/i.html?_sacat=0&_nkw=l6470&_sop=15 as the L6470 runs on SPI http://www.st.com/content/st_com/en/products/motor-drivers/step...
by xebbmw
Wed Sep 27, 2017 1:24 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

recently among them are one of the favourite here the stm32f407vet black are looking rather attractively priced on ebay :lol: https://www.ebay.com/sch/i.html?_nkw=stm32f407&_sacat=0 I agree with you on black stm32f407vet. It is cheaper than Nucleo board and a perfect match as daughter board in 3D p...
by xebbmw
Mon Sep 25, 2017 4:34 pm
Forum: Projects
Topic: Anyone tried to make a 3D Printer controller?
Replies: 293
Views: 23545

Re: Anyone tried to make a 3D Printer controller?

The steps are normally in the range of 10s of Khz in the AVR, depending on what speed you are moving and how many microsteps per full step, but in the AVRs, people is hitting the limit, at which point the moves become jerky when the CPU can't keep up with the required number of steps. But that's at...