Week 17 – Week 17 – Applications & Implications – Propose a Final Masterpiece

Weekly Summary

From this week onwards it's 100% concentration on the Final Project. And 100% concentration on finishing the Evaluation Process.

Incubator Modules for the Home Bio Lab

Example 1: Suspended Incubator with Room Temperature Adjustment

Example 2: Shelf Incubator

Use existing shelf infrastructure (Muji, Ikea, etc) for incubation.

Individual Assignment

This week's assignment is to propose a final project masterpiece that integrates the range of units covered, answering the questions below. Most of it will also be in a similar form and shape on the Final Project Page.

Timetable and Tasks

I am laying out the tasks and try to find them in a timetable, being mindful of supply-side time management. See also the separate Schedule Page for an wide view on the Final Project Schedule.

Tasks

Timetable

Day Time Place Task
Thursday, May 20th 9:00 - 13:30 Nueval 1 - 7
16:00 - 19:00 Nueval
Friday, May 21st 8:00 - 14:00 Get Electronics from Tokyo
15:00 - 19:00 Design Enclosure
Saturday, May 22nd 10:00 - 18:00 Kamakura Design/Redesign Enclosure Get Electronics
10:00 - 18:00 3D Print/Lasercut Enclosure
10:00 - 18:00 Test Electronics Parts & Driver
10:00 - 18:00 Nueval Update
Sunday, May 23rd 10:00 - 18:00 Kamakura Design/Redesign Enclosure Get Electronics
10:00 - 18:00 3D Print/Lasercut Enclosure
Monday, May 24th
Tuesday, May 25th Nueval Updates
Wednesday, June 26th Online Global Session: Homework Final Page

How is it called?

I added this questions:

What will it do?

My project is a Configurable Modular Incubator for the Home Bio Lab. A single, atomic incubator module consists of:

These incubator modules can be combined in a variety of way with existing household shelving to create low-costs, accessible incubators for the Home Bio Lab.

Who's done what beforehand?

Incubators have a long and varied history, starting out as chicken hatcheries, millennia ago. The emergence of biotechnology from the 1960ies onwards.

Source: Egyptian egg oven ca 400BC, Source:Wikipedia
Source: Chicken Hatchery, ca 1730, Source:Wikipedia
Source: Julius H. Hess' Infant Incubator, Source:Wikipedia
C02 Incubator at Waseda University's [metaPhorest](http://metaphorest.net) biological/biomedia ar platform. Picture: Georg Tremmel

More recent, DIY examples.

Urs Gaudenz' "Inkubator"

Examples from the extended FabAcademy Archive

Images courtesy of the respected authors.


What will you design?

I will design:

I will use an off-the-shelf 12V - 6V DC-DC convertor.


What materials and components will be used? Where will come from? How much will they cost?

Single Incubator Module

Name Link Price Remarks
Expressif ESP32-WROOM-32E 16MB https://akizukidenshi.com/catalog/g/gM-15675/ ยฅ360
Peltier Device, 30 x 30mm https://akizukidenshi.com/catalog/g/gI-14751/ ยฅ770 4.6A (max), 16V (max)
Heat Sink Sengoku 200ยฅ
12V 30mm Fan https://akizukidenshi.com/catalog/g/gP-14183/ ๏ฟฅ250 30 x 30 x 10, 0.36A
OLED 128 x 64, I2C https://akizukidenshi.com/catalog/g/gP-12031/ ๏ฟฅ580
3mm Acrylic Royal Home Center ยฅ512
DS18B20+ 1Wire Temperature Sensor https://akizukidenshi.com/catalog/g/gI-05276/ ๏ฟฅ320
A4953 Power MOSFET https://akizukidenshi.com/catalog/g/gI-12317/ ๏ฟฅ160
JST Connectors and Cables ยฅ2000 various

Suspension Module

Name Link Price Remarks
Expressif ESP32-WROOM-32E 16MB https://akizukidenshi.com/catalog/g/gM-15675/ ยฅ360
DS18B20+ 1Wire Temperature Sensor https://akizukidenshi.com/catalog/g/gI-05276/ ๏ฟฅ320
3mm Acrylic Royal Home Center ยฅ512
JST Connectors and Cables ยฅ2000 various
12V Worm Gear DC Motor Amazon ยฅ1500 3RPM

What parts and systems will be made?

Incubator Enclosures:

3D-Printed Incubator Enclosures hold

3D-Printed Side Structures

The Side Structures are also modular allowing for an adaptive height of the suspended incubator. The side structure can be extended or exchanged, changing the height and volume of the Incubator.

Acrylic Enclosure Panels

To save printing time and allow of a modularity in height, the side panels will be laser-cut. A double layer of acrylic panels ensures better isolation.

What processes will be used?

Decorative and User Interface Sticker can be made using the Vinyl Cutter. That is Spiral +1.

What questions need to be answered?

3D Printing

Work Gear Delivery

The Worm Gear Motor I ordered will arrive in the beginning of June, one week before the deadline. I need to work from the specs and dimensions from the data sheet.

How will it be evaluated?

What worked? What did not?

Tests 3D Print the Edge Structures of my incubatorCheck and test for rigidly, stiffness and printing duration

Designing Side Structures.
Slicing Side Structures.
Test Prints of Side Structures.

Test Driver Boards for Fan, Peltier and Worm-Gear Motor

Making H-Bridge for Testing

For my breadboard test set-up, I need a couple of H-Bridges to drive the fan, peltier and the stepper motor. Neil's example boards from the Output Week for the single and double H-Bridges are the starting point.

The plan is to make simple boards in Eagle, just the A4953, the capacitors and the pins.

Fรกbio Pelicano from the FabAcademy 2017 came across the same problem, his solution was to the L5973D part, which has the exactly same footprint as the A4953. (The footprint - with exposed pad - is called: HSOP 08.)

The L5973D's connector name are not quite right.

I searched for A4953 with the SamacSys Search Tool, and found the right part.

A4953, added via SamacSys Search Tool
A4953 Schematic and Footprint. That looks better.

We learned how to install the SamacSys Library Manager in Week 6.

Mysterious Additional Space in Eagle Export

I am in the process of making a Single H-Bridge Board to test the fans and motors for my final project. I designed in in Eagle, exported in, getting ready for M & M (mods & milling).

Where is the empty space coming from?
Dimension and Document are OK.
Remove the descriptive text.

H-Bridge Board

Eagle Schematics
Milling files for H-Bridge

How will it be evaluated?

I will be evaluated on how constant and accurate the temperature and growing conditions within the incubator can be kept. Or if it's possible to grow and cultivate micro-organisms in the incubator.

Files