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Tevo Tarantula Extended Case

by logansgraphicd Sep 9, 2016
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still no front panel for the stock LCD?

Hola, te aporto lo que he creado para utilizar en tu caja, para poder instalar dos mosfet de 30A originales de Tevo. Esto sustituye la Octopi y 4-channel.
Gracias por el diseño de la caja extendida.


Placa para mosfet 30A de Tevo
by Boxu

do you have link to the DC-DC step down?

Looking at the base plates, they both have two holes, one plate they are close to the wall edge the other, they are close to the open edge. Which base plate is the front? Thanks in advance.

is there a front top for this stock tarantula display?

This is a masterpiece! Thank you I am busy made slight mods, I have removed the relay board and the one above it and kept the Pi and added a MOSFET, I am also swapping the cable entrance to the right-hand side instead of the left. the complete model is awesome to work with. I've noticed that the side panel STL files are missing the m3 screw holes (not sure if you are aware), I will gladly upload my files as a remix, or I can send them to the owner whatever you prefer? Once again a big thank you for this.

Would you be willing to share the files for this? I also use a MOSFET so it sounds perfect, thanks!

I'd like to see the remix.

Great! Thank you very much.


Congratulations on the project. Very good.
I wonder if I can replace the electronics with Ramps 1.4 and Arduino Mega 2560?

Thank you so much

I have the same switcher, and I modified the rear part for it. I have the .stl. Do you want it?

I have already tried with this file, but I can see all parts except for the rear (I use solidworks 2018) , I don't understand why... would be grateful if you could send it to me

I dont suppose you could add a mosfet mount for the small mosfets? similar to https://www.amazon.com/gp/product/B01HEQVQAK/ref=ox_sc_act_title_8?smid=A1LCDIR1SM8KTJ&psc=1. This is an awesome case.

I have done this, can send it to you if you like.

I'd like to see that. Can you send it to me please?

Seriously, WOW! This is the dream case I always wanted. I opened it up in Fusion 360 and hats off to you for such a well organized structure.

I do have a few questions, if its ok:

1) I need to move the rear panel fan holes to centre it for my application. Do you have any advice? I am a rank amateur
2) I love the components! Did you build them? I am specifically looking for the Anet 12864 LCD, do you know where or if I can find one to use as component? (please don't hate, I am ordering a Tevo Tornado next week)
3) Finally, what is the best way to create the standoffs? Extrude a circle, then punch a hole?


What's the circle thing with the colored wires coming out of it in the wiring diagram?

5 pin led switch


Is it possible for you to upload some pictures from inside the case \ assembely?

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Hey man,
I like your design, I printed some part, and modified others, but I need the original file from: front_top_full.stl because the SD card is not close to the left panel. Could you share please? (is not in the assemble file)

What does the 4 channel relay do?

Where do you connect the 80 mm fan? The PSU?

the wiring that goes from the dc step down to the pi what wire is it? i'm having a hell of a time trying to track it down.

The micro usb to barrel connector can be found on adafruit’s site: https://www.adafruit.com/product/2727


What screws are required to screw this together? And how many of them

you really print these oriented standing up? for strength I assume? I don't see how it'd stick to the bed and not topple over.

It would be great if you could design the side panel to attach xt 30 connectors so all the cable will be with connectors instead going through holes!

This looked like a great enclosure so I started printing it. Printed the bottom XL pieces first. Then I printed the rear_panel.stl. The holes don't align with the bottom piece. They are not even the same size. Has anyone been able to assemble the XL version?

i can see that the front bottom screw holes are 4mm instead of 3mm for the m3 screws. Is this how it's suppose to be or should i enlarge them to 3mm? Also some holes are misaligned.

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Awesome looking case. Been thinking to print this for my Tarantula, but I don't see where you can put the MKS board.. is this case don't include the MKS board?

The MKS board goes vertically in the front of the case just behind the front fan. See pictures above.

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Hmmm...none of the lcd case panels seem to fit the stock one that came with my tevo tarantula. Am I missing something?

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Can you share the original drawings or perhaps just the dimensions? I'm looking to build something similar with wood.

I've added the 3D models to the files section for download. Hope that helps!

Thank you much! Just getting back to this after a short absence.

Hi. Noted with thanks.

Hi. Noted with thanks.

I'm currently making this case out of 1/4 oak plywood, I printed each piece just a couple layers and used that as a template so far so good will post pic later on

Hi, planning to use your design but would like if there is a possibility of changing the plug at the back with the plug with switch form factor design. I was thinking of removing the switch from the front to the back. would it be possible for you to share the back plate design for me to convert it? thanks.

I've added the 3D models to the files section for download. Hope that helps!

I might be wrong but de sd slot is in the wrong side of the panel.

Am i the only one who finds one of the two holes on panel top 1 to be misaligned

Awesome Model!!! How hard would it be to adjust this model so it would be a vertical orientation? This way it would take up less space on the desk. I recently purchased a Tarantula and working on all the upgrade parts and the home for it has a very small footprint and a vertical orientation would be awesome. Keep up the great work!

Hi Logan,

Is there any chance you could help us out with a TFT32 front panel - that would look HOT!! Im still new to this all and have only just started printing replacement parts & calibration - so no where near my expertise to modify it myself yet.

If this is possible would make me and I'm sure others with the TFT32 a very happy :)

Hey! I've got my tevo tarantula arriving son. I wanted to make the electronics side of things safer. Would it be possible to fit the tarantula's main board into this to have an "all in one" control hub? I plan on having a single extra fan for which I think I can pull power directly from the tarantula's board. Would the board be connected to the relays? If the board would make this too big, what about some holes to pull the PSU power cables out to the main board? I have a 12v 30A psu in my house I can use that is very decent, would this power the board?

The main board is already incorporated in this design (http://thingiverse-production-new.s3.amazonaws.com/renders/be/e9/92/5c/c3/d4fd4961104b88a76f69f7defd1a68c1_preview_featured.jpg). It mounts vertically in the front of the case.

Woah, I also missed it. Great, I will print this one when I have a chance. Nice design!

Oh my, I completely missed it. I checked your wiring diagram and it didn't really seem to take into account the main board's connection. How would it be connected? Do you just "piggyback" the connnections on top of the diagram? would 12v 30A be enough to power the main board with the "default" components + a raspberry pi?

All wiring would be the same as the instructions that came with the Tarantula. The only difference, would be plugging in the USB cable into the Raspberry PI and setting up Octoprint on the RPi.

I can see what seems a stepdown in the diagram, do you use it to connect your raspi? I have one lying around that could power it :)

Also, what are the relays meant to be used for? Only lighting the printer and the hotend fan (NOT the layer fan)? I can't seem to find relays with the sufficient amperage rating to use it to switch the printer on and off since from what I understand, the board can eat up to around 15A (that's the rating on the fuses, I think?) and most relays are rated 10A.

12v 30A is what I'm using right now. So you shouldn't have any problems. If you have a heatbed, I would consider building an enclosure to keep the heatbed insulated.

What size inlet socket will I need for this case? If you don't mind, can you post where you bought your inlet socket? Also, I take it with the 5V relay, you are using 5V fans and LEDS? Which fans are and LED are you using?

@FootFungus, I am using the "C14 Inlet Socket" from Amazon: http://a.co/0dRK1hT

The RPi is supplying 5v to the relay (VCC input pin on relay). The 5v is used to power the relay only, nothing else. For each channel on the relay, it can support up to AC250V/DC30V. The relay was also purchased on Amazon: http://a.co/iBmrLHc

In my case, I'm using a 12v PSU that powers the fans, LEDs, etc. The fans I used are 80mm fans available here: http://a.co/8vysPnH

Also, here is the wiring diagram if you're interested: https://cdn.thingiverse.com/assets/15/b8/2d/7c/7b/tevo_case_wiring_bb.pdf

hey you printed the xl in the pic you uploded or the regular one?

best case ever thank you man great work.
printed it came out great

I was hoping to mount the stock PSU in here but it seems like the screws on the base plates are in the wrong spots. It still will fit but I think I'll have to drill new holes. Did I assemble it incorrectly or are they just designed for a PSU with holes closer together?

Hi @Camaraderie, I'm using an aftermarket PSU because the original crapped out on me.

Is there enough space to throw in two external mosfets?

There is an XL version that should have enough space for you. Just use the stl files with "XL" in their filename.

This is such a cool case, I set about printing it this past weekend. I got it done but I printed the XL version. A suggestion for the XL, add 2 more screw mounts for the top lid since the plastic as a tendency to not be 'true' without additional support in the middle of the case. The screw mounts and mount holes on the lid at the center or around the center line, would ensure alignment of the walls. Otherwise I am adapting this for my Smoothie installation.

can i use this case for my tevo black widow will my mks be able to mount in this case?

The Black Widow uses MKS Gen which is larger than the MKS Base that the Tarantula uses. So no, it will not fit the front panel, sorry.

I have the case printed with the exact components you have listed (raspberry pi, 4-ch relay, DC-DC stepdown to 5v)and curious about wiring. Do you have a wiring diagram how you wired your components? Also looking to see the flow of your fans in the case. Any help is greatly appreciate.. Beautiful extended case!

Here is a link to the wiring diagram: http://www.thingiverse.com/download:3038123

The case fans airflow starts from the front of the case towards the back. So the front fan pulls air in and the back fan pulls air out.

Man!!! thanks..

I do have 2 questions..

1..in the picture/diagram, you are coming out of the DC-DC 5V to a connector that I don't have. Is that going to power to Raspberry PI through USB? Was going to power through the pins, so what is that in the pic? Assume it is just a USB cable screwed down.

2.. I the picture, it looks like you are going to a power button coming off the 12V power supply on the red lead. What button or device is that?

1.) That is correct. From the 5v step-down, I'm using a 2.1mm DC connector to micro usb cable that will plug in and power the Raspberry PI: https://www.adafruit.com/products/2727
2.) It's a power switch you can get here: https://www.adafruit.com/products/915

How did you connect your 2.1mm DC connector to micro USB cable to the 5v Stepdown? This: https://www.adafruit.com/products/369 or this: https://www.adafruit.com/products/368 ?

Are you also using 5V fans or 12V fans? Thanks for your hard work.

My power supply is about 28cm long. Would you be able to extend the case by about 10cms? I'd really like to give this a try.

@elim99, I've uploaded the extended files. The files you need are all prefixed with "xl_". Hope that helps!

wow! Much appreciated. Will be giving this a shot and will let you know!

Why is there 4 hole in the base plate? To secure the power supply?

Yes, the power supply attaches to the base plate using those 4 holes.

just for the record which power supply do you use?

12v 30A Newstyle branded PSU: http://a.co/9GxOElx

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Im loving this! Thank you!

You would use this file: http://www.thingiverse.com/download:2764074 (file labeled "front_top.stl") for the front display.

I also have this front panel and the second file you gave isn't compatible either. Besides that, I've whole thing printed. Let's see how I'm gonna sort this out. :) Thanks.

What model number is listed on your display?

Hi, thank you for your reply. RepRap Discount Smart Controller
This is it: http://imgur.com/a/YJ6Pi

@sinaneryigit I'm reworking the front panel now. So hold tight, I should have a fix very soon. Thanks for the feedback!

Great! Thank you. :)

@sinaneryigit I've uploaded a fix for your controller. Unfortunately, I had to update the side panel as well for the SD card slot to align properly. Below are the files that were affected:


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Wow. Great job! I'll print them again. Keep you posted. :)

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So can we get a picture of this installed and all the wires run from the outside?

Absolutely. I'm planning on having everything assembled this weekend hopefully. So I will post them then.

looking forward to seeing this built!

Awesome model, was wondering if you happen to have the links to the electronics parts you used for your make (4-channel relay and the buck converter) or the part names. On the same note, curious what yo used the relay for? Can I also use it to power an LED strip by feeding a 12V into it?

Thank you! The 4-ch relay is going to be controlled through the RPi and OctoPi to control my ABS AirScrubber, fans, led's etc. To hook everything up, I used this article (https://github.com/foosel/OctoPrint/wiki/Controlling-a-relay-board-from-your-RPi) to go by. Here's the link to the relay I used: https://www.amazon.com/gp/product/B0057OC5O8/ref=oh_aui_search_detailpage?ie=UTF8&th=1. For the buck converter, I used the LM2596 (https://www.amazon.com/gp/product/B00JUFJ1GA/ref=oh_aui_search_detailpage?ie=UTF8&th=1). Hope that helps!

That is a super detailed response, and so much more than what I was hoping for! Thank you so much man, this mod will really fancy up my printer hehe :p

i see that the original version is not include the sdcard hole. could you support it for yours?

I recently added an SD card version. So take a look in the files and use "front_top_w_sd.stl" and "left_panel_2_w_sd.stl".

so, just to be clear, the SD card version is for the original Tarantula LCD that comes with the printer. Correct?


Hi. Looks good. I like. Could you share finished dimensions with me?
It also seems as if there is a part missing. You only have the 'front top' in the files section. Or am I missing something?

Here are the dimensions: 180 x 186 x 300mm (w, h, l). I didn't include the Front Bottom because I didn't make any changes to the original. So you can download that file here: http://www.thingiverse.com/download:2719923

Thanks. Makes sense. Suspected that, but didn't want to print to test.

great model thank you