by Think3dPrint3d, published

Panelolu2 by Think3dPrint3d Feb 15, 2013
13 Share
Download All Files

Thing Apps Enabled

Order This Printed View All Apps



Panelolu2 by Think3dPrint3d is licensed under the GNU - GPL license.

Liked By

View All

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag.

Print Thing Tag

Thing Statistics

16088Views 3726Downloads Found in 3D Printer Accessories


The PaneIolu2 is a new version of the original Panelolu that uses an I2C port expander.

More detail at http://blog.think3dprint3d.com/2013/02/panelolu2.html

available here http://www.think3dprint3d.com/Electronics/Panelolu2

The I2C port expander is used to drive the LCD screen and adds a piezo buzzer, and indication LEDs. This uses less pins making it compatible with the Mezli electronics and even leaves enough spare pins to drive a couple more outputs. Versions available for Printrboard, RAMPS, Melzi and Sanguinololu


The case comes in two main parts - front and back. The SCAD file has a switch at the beginning to generate either the front or back, I have added the STLs as well

You will also need knob for the rotary encoder. I have modified MiseryBot's design:
to be about 1/3 smaller, and cut it a lot thinner. The STL for this is uploaded and I will get the SCAD code up once its integrated into the rest of the Panelolu2 code.

The SCAD file also has the option to generate legs to use as a stand, as shown in the attached photo. I have uploaded the leg and front lug (2 required) for a 60 degree from horizontal option which I like – the SCAD code is easy to change to make legs to hold the screen at whatever angle you like (between about 20 and 80 degrees!)

In order to make the Panelolu2 "plug and play" with as many 3d printer control electronics as possible adapter boards are used (see the blog post for details). Currently there are boards for Sanguinololu and Melzi, I will be adding designs for RAMPS, Printrboard and others if there is interest. It is also possible to crimp standard connectors onto the ribbon cable which should allow compatibility with any electronics that have the required pins and memory. The eagle files for these boards are available on github:

More from 3D Printer Accessories

view more

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Print through a distributed network of 3D printing enthusiasts from across the US, at a fraction of the cost of the competitors. We want to change the world for the better through technology, an...

App Info Launch App

Treatstock is an online platform that offers decentralized manufacturing services such as 3D printing and CNC machining for clients all over the world. We offer free and instant access to comparati...

App Info Launch App

3D print your favourite design with NinjaPrototype, a professional 3D manufacture with consistent quality and speed.

App Info Launch App

Great design. I now have it working on my Printrboard Rev B.

On your website, you indicated that testing had only occurred on a Rev D, but you should know the Rev B works fine too.

Great work. The casing was difficult to print due to the cheap filament I used, but I am satisfied anyway. http://diycrap.blogspot.no/2013/08/i2c-display-and-rotary-encoder-on-melzi.htmlhttp://diycrap.blogspot.no/201...

Great work man, I shall be doing some ebay shopping shortly! :)


Let me know how you get on :D

Hi All

Finally, after a break to move offices, we have listed the RAMPS and Printrboard adapters on eMakershop and eBay.

Thanks for the update, I look forward to getting one when!

Great work! Has there been any progress on the Printrboard adaptor? or would it be better to stick to a version 1 Panelolu?

Hi acon. The Printrboard adapter is in the queue for manufacture. We expect them next week. I will put a note up on the blog and here once they are available.

That would be great, thanks!

good stuff, want to use this on my reprappro mendel running a melzi board so will do some reading up and then pop over to emakershop if it pans out

Nice work! I'd be interested in seeing a Printrboard adaptor.

Yeah I am going to work on one later in the week I hope.