1 Topic by lachupacabra

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Topic: Chitu V3.1 motherboard on DaVinci 1.0

Hi guys,

I'm just about to swap my motherboard on the DaVinci 1.0 to CBD Chitu V3.1 3D Dual (Link: http://3dfilamenta.com/motherboards/290 … #/type-c). I'm building a dual nozzle DaVinci 1.0 with Andy's modified carriage.

I thought it was straight forward swap, but I guess it's not and I'd really appreciate some help.
I have no idea on how to connect two (white and black) 4pin connectors on the left side of the DaVinci motherboard to the new motherboard (see attached pictures). For bed heater, I'll just cut away the metal rings to expose the wires and connect them to Hot Bed connector on chitu motherboard. Or is this incorrect?
But for black/white connectors, I have no idea on how to connect them. To be honest, I don't even know what they are exactly (I figure they supply power to motherboard). So I'd really appreciate if someone with more knowledge would shed some light on this. (because, I have none - knowledge that is smile).
Also, any idea on what's up with power adapter for chitu? They recommended to buy a adapter with current greater than 10A and obviously, they don't supply it with their motherboard. So I need to buy that too I guess. Duh...

I'm not looking for concrete answers (they are welcome, but I don't think anybody else swapped their motherboards for chitu), so just your thoughts on the subject will be greatly appreciated.

All in all, it looks like, I haven't thought this through... But hey, that's life I guess.

thanks in advance

http://i58.tinypic.com/2814dx4.jpg http://i62.tinypic.com/2guw8ld.jpg

Davinci 1.0&1.0A with repetier 0.92 firmware & E3D bowden
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2 Reply by L.woinson95

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Re: Chitu V3.1 motherboard on DaVinci 1.0

You may have to change some of the connectors for the white plug with the yellow wire I think that is for the Heater cartridge I think  you would just cut the connector off and screw in to the hot end and the heated bed wires will go to the hot bed section

3 Reply by carl_m1968 (edited by carl_m1968 2015-03-22 17:53:40)

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Re: Chitu V3.1 motherboard on DaVinci 1.0

The power supply in the Da Vinci is a standard ITX micro power supply. It uses the standard color code. Yellow is 12vdc, red is 5vdc and orange is 3.3vdc. Only the stock Da Vinci board uses the 5 and 3.3 volts. So all you need are the yellow wires for the new board and of course the black wires for ground on that same connector. On the Da Vinci the two black wires on the screw terminals are the bed heater. The wires on the four pin black connector will not be used for the new board.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

4 Reply by lachupacabra

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Re: Chitu V3.1 motherboard on DaVinci 1.0

thanks for the input guys,

so if I understand correctly, I just cut off the white 4 pin connector, and connect the wires (two black and two yellow) to the new motherboard (12-24V supply screw terminal)? I assume one yellow and one black to each screw terminal...
Also on the new motherboard, do I need power adapter or is the power drawn from the above wires? (sorry for the dumb question smile)

Davinci 1.0&1.0A with repetier 0.92 firmware & E3D bowden
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5 Reply by carl_m1968

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Re: Chitu V3.1 motherboard on DaVinci 1.0

My guess would be yes about where the power is connected. I would email them though and ask what the adapter is for if you can connect a power supply to the 12/24 connector. Most boards require a power supply, either PC/ATX or brick style and usually on 12 or 24 volts. That voltage is more for the motors as the board usually has a regulator that drops the 12 to 5 for the board. If I could see a schematic I could tell you for sure what both connectors are for.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

6 Reply by lachupacabra (edited by lachupacabra 2015-03-24 00:23:07)

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Re: Chitu V3.1 motherboard on DaVinci 1.0

Hi carl,

thanks for the help. About connecting a power supply to the 12/24 their answer was: "Yes, you can connect power supply to the 12/24. Recommend is to use 24 V." So I don't think I need a power supply. But they failed to answer what the power supply is for so...

Do I need to use any wires from the black 4 pin connector or just wires from the white one?

I've attached the motherboard manual and schematic.

Post's attachments

Chitu V3.1 users manual.pdf 1.03 mb, 25 downloads since 2015-03-23 

Chutu-V3.1-board.PDF 305.75 kb, 25 downloads since 2015-03-23 

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Davinci 1.0&1.0A with repetier 0.92 firmware & E3D bowden
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7 Reply by lachupacabra (edited by lachupacabra 2015-04-07 16:04:31)

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Re: Chitu V3.1 motherboard on DaVinci 1.0

Well, I have everything connected and the printer is dead, lol.
The motherboard works on 5V supply (only motherboard, the printer is out cold), but when I put the jumper on 12/24V even the motherboard stops working.
Maybe it's me, maybe it's the motherboard or maybe it's the power supply...

When I turn the printer on, nothing happens.. It doesn't even start. No sound from power supply, nothing..
Or maybe it's the wiring? I've put one yellow and one black wire into each screw terminal on the new motherboard.
I did everything advised above and more..

Well if anybody has any ideas, please share smile

yeah and also, any suggestions about alternative motherboard (one that could use Davinci's optical endstops) like rumba, rambo, azteeg, smoothieboard would be much appreciated.
And has anybody seen this: http://www.ebay.de/itm/SainSmart-2-in-1 … 33990a2227

thanks in advance

Davinci 1.0&1.0A with repetier 0.92 firmware & E3D bowden
Slicer - Simplify3d/CraftWare/MatterControl/Repetier Host
Filament - ABS, PLA, FPE, LayWood
3D modelling - Autodesk 3DS Max, Blender,

8 Reply by carl_m1968 (edited by carl_m1968 2015-04-07 17:59:42)

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Re: Chitu V3.1 motherboard on DaVinci 1.0

lachupacabra wrote:

Well, I have everything connected and the printer is dead, lol.
The motherboard works on 5V supply (only motherboard, the printer is out cold), but when I put the jumper on 12/24V even the motherboard stops working.
Maybe it's me, maybe it's the motherboard or maybe it's the power supply...

When I turn the printer on, nothing happens.. It doesn't even start. No sound from power supply, nothing..
Or maybe it's the wiring? I've put one yellow and one black wire into each screw terminal on the new motherboard.
I did everything advised above and more..

Well if anybody has any ideas, please share smile



yeah and also, any suggestions about alternative motherboard (one that could use Davinci's optical endstops) like rumba, rambo, azteeg, smoothieboard would be much appreciated.
And has anybody seen this: http://www.ebay.de/itm/SainSmart-2-in-1 … 33990a2227

thanks in advance

Ramps 1.4 works with optical stops and the Azteeg X5 mini as well.

Also after looking at the information on the website I would say you need the adapter as well. From what I can see the adapter actually powers the board and the 12/24 volts is used by the board to power the motors and heaters. But it does not power the board.  This board also requires a dedicated LCD. i trust you have that already. In fact if you want LCD control for any other board you will need to buy the LCD for that board as well.

The LCD that is in the Da Vinci as stock will only work with the stock motherboard due to the cable interface and communication protocol used.

Now what might be happening is the power supply needs a load on the 5 and 3.3 volt lines. So you need to get a 100 ohm 1 watt resistor and attach it between ground which is black and red which is 5 volts on the power supply. The power supply has to see a load on this line or it will not power up. The stock board supplied the load. The other option is if there is room just leave the stock board loos in the machine on the left side. maybe cover it with tape for insulation and leave it connected to the four pin that supplies 3.3 and 5 volts. The the power supply would see the load it needs.

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

9 Reply by lachupacabra

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Re: Chitu V3.1 motherboard on DaVinci 1.0

hi carl,

thanks for your input!
About the optical endstops.. I'm asking because I've found that some people had trouble with davinci's stock endstops and had to, either swap them for mechanical ones, or solder new resistors on ramps: http://voltivo.com/forum/davinci-hwmods … mitstart=0 <== page 2
I've wrote to SainSmart and they've also said I can use optical ones (well Edith did), so I really don't know.
I really like the azteeg x5 but it would cost me around 160€ so it's out of the question. Rumba looks good too for around 90 €, but atm I've only found one that comes from china, which is out of the question (1 month delivery time, warranty issues...).

I'll probably go with ramps since they are the oldest and the most tested of the bunch. Just need to figure the optical endstops issue, because I'd really hate it if I'd burnt one (or all) out.
The chitu, I'll throw in the trash and get a good (85€) lesson about how patience really is a virtue and how early bird never gets the worm.

And yeah, the LCD came with the board and I'll get one with the ramps too. Which reminds me, anybody knows where to get a long 10 pin display cable for ramps? The one that comes with it is short as s**t.

And the last thing, even if I connect the black four pin connector to the stock motherboard, the power supply still doesn't budge.. nothing, nilch, nada.. Is it possible that' I've burned out/destroyed my power supply? (I mean, I know it is, I'm just asking because, I didn't have any sparks or weird sounds coming from the power supply).
And carl, do you have any suggestion on which power supply to get, to run dual nozzle on davinci 1.0 (I've read your post that the power supply already operates almost at maximum) and I'd hate it if the power supply was the bottle neck of the setup.

Thanks again

Davinci 1.0&1.0A with repetier 0.92 firmware & E3D bowden
Slicer - Simplify3d/CraftWare/MatterControl/Repetier Host
Filament - ABS, PLA, FPE, LayWood
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