R2D2 Modular control unit (MCU) - Free 3D Print Model

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printingbuddy

Hobby & DIY>Robotics

IP Report

Print Profile(1)

All

X1 Carbon

P1S

P1P

H2D

X1E

H2D Pro

H2S

P2S

H2C

X2D

A2L

0.2mm layer, 4 walls, 40% infill

Designer

32.4 h

36 plates

5.0(26)

Open in Bambu Studio

Boost

157

307

124

502

237

Released

Description

The latest version of the documentation is also attached where the assembly is described and also a list of needed parts!

General motivation

There are many good solutions for organizing all the control electronics for the whole selection of R2D2 bodys.
However, none of these solutions fully met my requirements, so I designed my own interpretation of a modular control unit the brain.
- Special thanks to everyone who inspired me, particularly John van Ohrs with his R2D2 modular electronics panel by jfmvoers and Tim Eebel with his MarkIII Hinged Electronics Panel.

Requirements

The module must be completely removable as a single unit to allow work on it at the workbench.
- Everything must be possible without any special tools, i.e., plug-and-play instead of screws (almost achieved)!
To allow access when installed, the entire unit must be hinged (no tools required for this step).
The design must be modular, allowing it to be adapted to specific requirements.
The design must be based on a grid (60x60mm) and offers panels ranging from 1x1 to 1xX.

Used Mods & Kudos

Note: The following list contains an overview of the mods that I currently use in my Droid. It is not mandatory to use them as well, but I can confirm that they are compatible with each other.

Battery Tray for Baddeley MKIII Astromech by Jason Charlton. He also has many other great mods!
Dome Motor Mount by Gonz Pousada J Luis.
Both Luis and Jason have other fantastic mods, and you should also check out Jason's YouTube Channel.
A special thanks to Ben from Printed Droid, who provided me with the electronic components, and to Norbert A. Richartz, who is developing the AstroCan System and BetterDuinoFirmwareV4. He answered nearly all my questions and integrated some cool features.

Documentation (2)

Assembly Guide (1)

Documentation.pdf

Other Files (1)

README.pdf

Comment & Rating (124)

@kristof88

Boosted

This is absolutely wonderful, used the majority of your design but also added a few custom panels of my own. Absolutely brilliant. Currently mine is about 90% done.

The designer has replied

@Buddinski88

This is looking awesome 👍 Thank you for sharing. Feel free to Upload your panels as a remix 🤗

@kristof88

Boosted

Replying to @Buddinski88 :

Uploaded them as a remix + my version of the body adapters since I don't have the luxury of a backdoor 🤦‍♂️ This allows me to easily remove the panel.

(Edited)

@zark

Thanks for putting this together.

(Edited)

The designer has replied

@Buddinski88

Thank you for you comment :-) Have fun with the MCU!

@kristof88

Boosted

@Buddinski88 Quick question, is this a printed housing for the MPX JX6 connector? The male/female set from Ali Express have very little protection for the wires and make it hard to unplug without damaging the soldering.

(Edited)

The designer has replied

@Buddinski88

Hi @kristof88 yes, I drew a cap for it and just uploaded it :-) https://makerworld.com/de/models/1283125-mpx-jx6-plugcab#profileId-1311615

@kaybee69

Hi, I’m not sure what’s happened but I cannot for the life of me find anything like this pictured part. I have printed everything but nothing looks like this. what is it called and what plate number is it on? Thanks

The designer has replied

@Buddinski88

Hi @kaybee69 this is no printable part. Only for reference of the Body ☺️

@user_1907393859

Do you have or know a way to connect this to a com 8 alumminum frame?

The designer has replied

@Buddinski88

unfortunally not.

@user_1907393859

Replying to @Buddinski88 :

Ok ill make one, and link your build into it so more can use it

@Buddinski88

Replying to @user_1907393859 :

Awesome 👍🏻

@BassPlayinFatty

Boosted

Print Profile

0.2mm layer, 4 walls, 40% infill

this is an amazing project for your R2. love this thing.

The profile uploader has replied

@Buddinski88

@BassPlayinFatty thank you very much! :-)

@ntsarb

Is this design compatible with the v2 body ?

The designer has replied

@Buddinski88

Sorry but i Can’t say that. Your can Print the left an right Body Adapter and Test it from there.

@ntsarb

Replying to @Buddinski88 :

No worries. If I go ahead with this design, I'll design my own adapter. Hopefully I can do this in Fusion 360 (hobbyist license)

@darryl.kegg

Replying to @ntsarb :

@ntsarb any luck with an adapter for a V2 body? I'm about to embark on printing this masterpiece but thought I'd check to see if I need to change anything first...

@SpaceCadet

Great design! I had created my own single print electronic board, but this is much better. Thanks for putting this together. As a note, in your documentation, in Preparation of the Body Adapters, you mention using two M3x18 mm countersunk screws. I believe those should be M4x18 to go with the M4 threaded inserts. Same with the required parts above that.

The designer has replied

@Buddinski88

Thanks for the kind words and for pointing out the mistake! :-) I have just corrected it in the documentation.

@SpaceCadet

Replying to @Buddinski88 :

Couple more issue I found. The holes for the pins on the Frame connectors are offset by a couple mm. However you only have 1 version of the stand included. There should also be a mirrored version of one of the stands, instead of the same one x2. Otherwise it doesn't fit. Next, on both body adapters. The holes don't have a bevel to allow for countersunk screws, so they do stick out a bit. Although they don't really get in the way. thanks again!

@Buddinski88

Replying to @SpaceCadet :

@SpaceCadet Thanks for the tip. I forgot to update the print profile since November. I have just updated it and now both problems should be fixed. Please download the data again and sorry for the inconvenience :-)

@ntsarb

Is it possible to include the dimensions (distances between screw-holes) for each type of module in the documentation? I have already purchased most of the required components but not necessarily the same as here, so I need to check which modules can be re-used and which ones I need to design for my parts. I like the design and I need to check whether I can fit all my components. For example, besides the standard ones, I have a Jetson Xavier AGX for ROS2-based robotic functions, a GPS receiver with integrated antenna, LORA for communication, etc. I'm building it as an educational and experimental platform, to try out a wide range of technologies.

(Edited)

The designer has replied

@Buddinski88

That is indeed a possibility, but would be significantly easier if I had a paid Fusion360 license. This will take some time, but I have added it to my list. Maybe you could give me the names of the STL files you are particularly interested in? Anyway, your project sounds very interesting. Are you planning something with Longrange, if I'm interpreting Lora correctly?

@ntsarb

Replying to @Buddinski88 :

I have the components and the relevant dimensions (size, screw hole locations), e.g. from the NVIDIA Jetson Xavier AGX embedded computer, the Polulu servo controller, etc. For small devices, it may be possible to fit two PCBs on the same tile. For others, larger tiles (x*60) will be needed. Regarding LORA, I'm thinking of using it as a backup channel, i.e. where no WiFi/Mobile connection is available.

(Edited)

@limecraft

Boosted

A standard squares in the frame seems to be 53mm wide x 52mm high. I took that from measuring the printed frame with cheap calipers ;-) Use with caution but it should be ok.

@user_2196308311

I'm having an issue with the side rails. The holes on the rails are far too big to heat set a 3M into. The diameter is closer to a 5M inset....but a 5mm screw won't fit through the rails. So, am I miunderstanding the instructions?

The designer has replied

@Buddinski88

Hi, in the documentation you can read that M4 inserts has to be used and not M3 inserts.

@user_2196308311

Replying to @Buddinski88 :

I tried multiple M4 too, holes are still too big. A lot of guys in the facebook group have said the same thing and said they found a work around with some 3M inserts off Amazon, so I bought them. They arrive today, I'll report back.