EInsy Rambo board

Electronics, Components etc
wtyler3
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Joined: Thu Jul 26, 2018 4:38 pm

EInsy Rambo board

Post by wtyler3 » Thu Jul 26, 2018 4:41 pm

I have a MK3 and want to add additional fans. I see a 5V plug in next to the reset button but are there any other sources of power from the board?

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PartTimeRonin
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Re: EInsy Rambo board

Post by PartTimeRonin » Mon Jul 30, 2018 9:09 am

What do you want to use the fan for? Is it alway on or need to be PWM control?

wtyler3
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Re: EInsy Rambo board

Post by wtyler3 » Mon Jul 30, 2018 4:21 pm

Thanks for asking. two sets, one to run during the print cycle (same as the NOCTA on the head unit) and the other to run at the print head.

The NOCTA fans to pull air across the EINSY board and the power - I think I can wire them in series? Either plug into the existing one or find another power source.

I also have the 2 fan setup for the print fan, I believe that is just splicing into the existing fan for power only, no control.

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Moorviper
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Re: EInsy Rambo board

Post by Moorviper » Mon Jul 30, 2018 4:45 pm

https://www.swtc.edu/Ag_Power/electrica ... rcuits.htm
and the print fan has to be pwm controlled.

Djam
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Re: EInsy Rambo board

Post by Djam » Mon Jul 30, 2018 5:29 pm

Hi there, I want to use a 24V fan with Einsy Rambo too, the circuit to control PWM in 5V can be used with the 24v I think.
it's the NCV8402D and the drain to source is 42Volt so it can handle the 24Volt from the PSU?
Just need to connect the ground fan to J4/5 Pin1 and 24V Fan to 24V PSU?

Image

Or at least wee can use the P2-1 it's a Pwm pin and use an IRF540 to control the 24V Fan...

Pin Map:

Image
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PS: I think there's an error in the marlin pin config for this ligne (but it's not the question here ^^):
#define E_MUX2_PIN 78 // 84 in MK2 Firmware, with BEEPER as 78
it's Pin 76 PJ5 the only one connected to P3-10, the 78 is not connected:
Image

EDIT > So another question : To dissipate the TMC2130 on the EinsyBoard I think I must place the dissipator on the rear of the einsy board?

Djam
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Joined: Mon Jul 30, 2018 4:50 pm

Re: EInsy Rambo board

Post by Djam » Mon Jul 30, 2018 11:11 pm

So, I think it's usefull:

LCD 12864 IN SPI!!!
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wtyler3
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Joined: Thu Jul 26, 2018 4:38 pm

Re: EInsy Rambo board

Post by wtyler3 » Tue Jul 31, 2018 3:15 pm

Wow very interesting. I was wondering what those 3 areas of pins were used for. So it looks like we can draw 5V power off those in several places?

P1 - 1 and 2
P2/3 - 2 and 1
P3 - 2 and 4

Djam
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Joined: Mon Jul 30, 2018 4:50 pm

Re: EInsy Rambo board

Post by Djam » Thu Aug 02, 2018 12:07 am

The 3 plug are for AUX, you can connect what you want if the FW or your skill did the trick!
By the way the P1 and P2 are used for LCD/SD/Encoder from lcd like This one or This another one...
Or If you have some thing in your drawers this:

Image

To answer you, you have +5V from P1-1 , P3-1 and P3-2 the other pin are GND, Ground...so it's common to 12V or 24V...or 5V

Djam
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Joined: Mon Jul 30, 2018 4:50 pm

Re: EInsy Rambo board

Post by Djam » Thu Aug 02, 2018 3:16 pm

I confirm 24Volt fan work perfectly with the PWM signal from PiN fan connected to ground fan and 24V fan connected to +24V...
Image

wtyler3
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Joined: Thu Jul 26, 2018 4:38 pm

Re: EInsy Rambo board

Post by wtyler3 » Mon Aug 06, 2018 3:39 pm

I worked on it a little this weekend., It turns out all but one of the power pins are taken so I just wired in the print head fan to the existing one. Used these new heat shrink wraps with solder in them. Simply awesome. Instead of soldering the wires together, just twist, and then shrink the wrap.

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