Layer by Layer: Making cr1220 component in 123D Design #3DThursday

This week we’re taking a look at making electronic components you can use in your projects, using 123D Design.


Ok so this is the cr1220 coin cell break out board – its a neat little battery holder perfect for powering small projects.

In this tutorial, we’re making a widget that includes stand-offs for the mounting holes, so we can securely mount this component to our 3d printed projects.


First we’ll start off by making the base shape for the PCB – you can normally get the dimensions of the board on the adafruit product page. 16.5mm by 23mm by 2mm in height. Before placing the shape its a good habit of laying it down in the center of the grid.

Next i will switch to the polyline tool and draw two separate lines. These are like guide lines that will assist in making mirror duplicate of shapes. so ill make one going on the X, and Y axis – making sure our object is in the very center of the intersection.


To make stand offs we’ll pull out a cylinder and position it right over one of the corners of the first object. you’ll notice the shape will snap to the center of the corner. Go ahead and set the diameter to 1.5mm which is the right size of the mounting hole – also change the height to 10mm or less (just need it tall enough to work with).


Next we’ll make another cylinder, this we’ll set the diameter to 2.8mm – this is going to be the stand-off that will elevate the PCB when its mounted to the printed part. we’ll set the height to 3mm so theres plenty of clearance for the components. Make sure to place it down with it in the center of the first cylinder – it should snap to the center. Now we need to move these two solids away from the corner by 2.4mm on the x and y.


Now we’ll select both cylinders and go up to the menu and select pattern > mirror. Switch the mode to mirror plane and select one of the polyline sketches. you’ll see the objects are mirrored over – just press enter or click away to append. We’ll shift select those duplicates and do the same thing again, this time mirroring on the opposite side.


Make another box this time at 26x20mm – this is going to be the part that next merged to the stand-offs, our “base platform” if you will. It needs to be in the center of the objects. Using the shortcut key “D” will drop any selected object onto the grid. Now we can move the stand offs up so its flush with the surface of the base platform. Then we can move the PCB up so its flush with the stand-offs.


Now is is a great time to save your work out. To finish this off we’ll need to merge the base platform with the stand offs and subtract the other cylinders to make the mounting holes.

And thats it! This is pretty much the process for most components – we are of course missing other parts like the battery holder, but this should get you started. Although this modeling takes a few moments to put together, the real hard work is in iterating so the tolerances are lined up with the cad. moving and shifting these cylinders slightly by .10mm you can fine tune these parts until its perfect!

Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!

Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!

The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!

Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here:

Join Adafruit on Mastodon

Adafruit is on Mastodon, join in!

Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Join over 36,000+ makers on Adafruit’s Discord channels and be part of the community!

CircuitPython – The easiest way to program microcontrollers –

Maker Business — “Packaging” chips in the US

Wearables — Enclosures help fight body humidity in costumes

Electronics — Transformers: More than meets the eye!

Python for Microcontrollers — Python on Microcontrollers Newsletter: Silicon Labs introduces CircuitPython support, and more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi

Adafruit IoT Monthly — Guardian Robot, Weather-wise Umbrella Stand, and more!

Microsoft MakeCode — MakeCode Thank You!

EYE on NPI — Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey

New Products – Adafruit Industries – Makers, hackers, artists, designers and engineers! — #NewProds 7/19/23 Feat. Adafruit Matrix Portal S3 CircuitPython Powered Internet Display!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at !

No Comments

No comments yet.

Sorry, the comment form is closed at this time.