Applications and implications¶

Assignment Overview¶

The goal of this week is to propose a final project masterpiece that integrates the range of units covered.

The project should incorporate:

• 2D and 3D design
• Additive and subtractive fabrication processes
• Electronics design and production
• Embedded microcontroller interfacing and programming
• System integration and packaging. Where possible, we should make rather than buy the parts of the project. Projects can be separate or joint, but need to show individual mastery of the skills, and be independently operable.

Outcomes and question we will answer:

• Define the scope of a project
• Develop a project plan
• What will it do?
• Who has done what beforehand?
• What will you design?
• What materials and components will be used?
• Where will they come from?
• How much will they cost?
• What parts and systems will be made?
• What processes will be used?
• What questions need to be answered?
• How will it be evaluated?

My project : Egg incubator for hatchery¶

Egg incubator for hatchery

My project is to make an Arduino controlled and possibly connected egg incubator. Egg incubators are machines that create the perfect conditions ( temperature, moisture, positioning) for an egg to incubate and hatch successfully. It’s designed to regulate incubation temperature and humidity at perfect levels there for playing the role of a broody hen.

It is used by farmers and used by farm providers to produce and sell chicks to farmers.

Project scope and what it will do :¶

the “Ey Broody!” Egg incubator will have these functionalities * Can set and efficiently control the temperature inside the incubator * Can set and efficiently control the moisture inside the incubator when required () * Ensure energy efficiency through proper insulation and energy use. * have a programable cycle depending on the type of egg. * is connected for live monitoring and control * Log data for later analysis and use.

From these functionalities we can define the project scope as follow :

Frame:¶

Rigid and air tight we plan for a cnc cutted plywood pannel with tabs and pocket for a rigid and quick assembly. To make it air tight we will use Silicone as sealant on jointures.

Heating:¶

Heat production:¶

The heat will be produce with a PCB heater. Design with holes and to be fix/stack to a 80mm Fan (PWM capable) to force the air trough and alow heat transfer from the PCB to the air.

Heat Control:¶

The control of the temperature will be done with the embeded electronic board PWN decreasing or increasing power feed to the heater and the fan speed (controling air flow inlet outlet). To achieve this the temperature will be sense on the heater PCB board with a simple thermistance(to avoid overheating). Two DHT22 Sensors will sense the temperature of the air getting in from the heater Fan and a second at the outlet.

The project plan¶

Who has done what beforehand?¶

• Lucio Pentagna tried something similar on his fabAcademy Journey.
• ESP32 Web Server for Live date plotting Based on Random Nerd Tutorials
• NTP client to get date and time on Random Nerd Tutorials
• Use of telegram bot sensor monitoring
• Heater PCB trace Calculation
• Tilting Mechanism inspired By Quentin Bolsee’s beehive-axes

What will you design and production process used?¶

• Frame / enclosure (CNC)
• Tray of egg holder system (Laser Cutting)
• PCB Haeter (KiCAD design and PCB milling)
• PCB Controler circuit with an ESP 32
• Electronic enclosure

What materials and components will be used, cost and sources:¶

Things we will buy¶

Things we will make¶

What questions need to be answered?¶

• is the heating controled efficiently ?
• is the moisture controled efficiently ?

How will it be evaluated?¶

Online link to the latest 3D CAD file

The functionalities I am thinking of :¶

Make an incubator that :

• Can set and efficiently control the temperature inside the incubator
• Can set and efficiently control the moisture inside the incubator when required ()
• Ensure energy efficiency through proper insulation and energy use.
• have a programable cycle depending on the type of egg.
• is connected for live monitoring
• Log data for later analysis and use.

Possible development steps¶

• CAD
  • Box/case for Cnc or laser cuter
  • 3d Printed pars for
  • egg tilting system
  • Elctronic enclosure
  • handle and hinges?
  • one way ventilation system
  • 2d design for banding with vynil Stickers
• Elctronics
  • Circuit design and production
  • Circuit test and proof of concept rapid prototyping with Arduino and breadboard
  • find and test sensors…
  • Heating control circuit
  • Humidifying control
  • Egg tilting system
  • Data logging
  • Iot connectivity and live reporting

Research¶

To understand how incubators work and the required manipulations I have searched for and read through the following: * Agromisa Agrodok No 34 PDF this gives me most of the needed information * A professional Agricultural equipement saler website * DIY Build on Youtube for a same similar project

2D and 3D Modeling¶

Online link to the latest 3D CAD file

Privious test ResultsResult¶

Egg tray test

PCB heater