2015-03-22 (Su) 3D Printed Automatic Tea Maker COMPLETED

The 3D Printed Automatic Tea Maker project came to a successful close. The enclosure was successfully printed after recalibrating the printer's table which caused two previous attempts to end with errors. The electronics were assembled in the enclosure with minimal issues. The screen did not fit exactly and had to be forced into place but only took a little effort. The bolts holding the screen in place were not exactly centered. None of these issues stopped assembly.

View of the inside after assembly

Close up of the inside

A USB charging cable was salvaged and the end was cut off to provide a USB end which could easily plug into a power supply or computer to provide power. The wire ends were soldered to the power terminals of the Arduino. Since the supplied power was now directly powering the servo motor some of the power issues noticed before went away. Once the unit was assembled it was tested and proven successful. Two videos were made to show the unit being run and the finishing of a successful run. #4-40 bolts were used to fill all the assembly holes.

Setting the tea maker and starting

The tea maker finishes brewing a cup of tea

GIF version of running the tea maker

Tea maker set up at my desk

Files for 3D Printed Automatic Tea Maker:

To do:
  • Print enclosure
  • Buy long #4-40 bolts and nuts
  • Assemble
  • Make parts list
  • Make Instructable

The rest of the posts for this project have been arranged by date.

A list showing of all the final posts of COMPLETED projects.

This disclaimer must be intact and whole. This disclaimer must be included if a project is distributed.

All information in this blog, or linked by this blog, are not to be taken as advice or solicitation. Anyone attempting to replicate, in whole or in part, is responsible for the outcome and procedure. Any loss of functionality, money, property or similar, is the responsibility of those involved in the replication.

All digital communication regarding the email address 24hourengineer@gmail.com becomes the intellectual property of Brian McEvoy. Any information contained within these messages may be distributed or retained at the discretion of Brian McEvoy. Any email sent to this address, or any email account owned by Brian McEvoy, cannot be used to claim property or assets.

Comments to the blog may be utilized or erased at the discretion of the owner. No one posting may claim claim property or assets based on their post.

This blog, including pictures and text, is copyright to Brian McEvoy.

2015-03-14 (Sa)


  1. I had a couple questions about some of the parts used in the project so I'll make clarifications here so everyone can reference them.

    The potentiometer should be rated at least 5 KiloOhm (5KΩ) and less than 1 MegaOhm (1MΩ). Trimming pots are fine. If you salvage a potentiometer out of broken electronics it will likely work here.

    Here is a link to a picture and example of what will work for 3 position header pins.
    There is a round version which I have had very poor luck with and the rectangular ones, linked, tend to be less expensive anyway.

    If you do an eBay search and "Atmega328," "Pro Mini," and "Arduino," all appear in the title it should work fine.
    Here is an example someone sent me that would work

    If anyone has further questions please let me know and I'll try answer as best I can.


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