Introduction.
In this week I learned that there is a wide variety of applications and implications related to digital manufacturing, I believe that it can practically be used in any activity carried out by humans, especially because there are activities that expose the integrity of people, for example exploring an inhospitable place. It includes a variety of applications, which are: educational, entertainment, health, networks and communications, transportation, measurement equipment, art, fashion, food, music. I believe that a country uses technology to improve all aspects of the lives of its inhabitants, it is a country with better economic conditions.
Assignment
Propose a final project masterpiece that integrates the range of units covered, answering:
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What will it do?
The idea of my project is to remove the mechanical components of a lock and instead build an electronic module, using different manufacturing machinery, since it is required to manufacture the electronic board that will contain all the necessary hardware and software that allow opening the lock without using keys.
It also requires the manufacture in 3d of a base that allows the electronic board to be attached to the lock casing, I plan to include a servo motor that will allow opening or closing, this will be possible using a means of communication that indicates the opening or close so I am thinking of using RFID and MIFARE, it is last when passing it near the lock it will open it for a few seconds, after this time it will return to its initial closed state.
It is a model that can serve to control the access of students and employees of a school, in my case from the Macuspana Higher Technological Institute, where I currently work.
For the topics discussed in previous weeks, I think it is a good example to teach young students of my work a way to improve the security of their houses, since not having a key slot will make it more difficult for thieves to enter their houses, it will also allow them to learn about other means of communication between electronic components.
I decided to use RFID technology because no other communication infrastructure is required. -
Who's done what beforehand?
At the Fab Academy there is a project on the use of RFID to open a cat's door, using a servo motor and an electric solenoid.
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What will you design?
The electronic card.
The part that will connect the servomotor.
The piece that will connect the servomotor with the metal part of the lock that blocks the door.
The base to fix the electronic card to the lock casing.
Maybe the part that opens or closes the door (metal part).
A door to scale to carry out the demonstration (mdf).
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What materials and components will be used?
For structure:
Petg filament.
Metal.
For decoration:
adhesive vinyl.
For Electronics.
Component Image Description 1 PN532 NFC RFID 
Uses electromagnetic fields to automatically identify and track tags attached to objects. The tags contain electronically-stored information. Passive tags collect energy from a nearby RFID reader's interrogating radio waves. 1 or more Mifare 
This system needs a transmiter and receiver, the receiver is the reader, which in this case is the RFID module, and then the tag is the transmiter. But both the reader and the tag need to work under the same frequency otherwise one can't read the other one. 1 Servomotor sg90 
It is a special type of motor that allows to control the position of the axis at a given moment. It is designed to move a certain number of degrees and then remain fixed in one position. 1 Voltage regulator sg90 
The The AMS1117 series of adjustable and fixed voltage regulators are designed to provide up to1A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V, decreasing at lower load currents. 1 Esp8266 ESP-12F 
The ESP-12F WiFi module is developed by the Ai-thinker team. ESP8266 core processor in smaller module sizes Integrates industry leading ultra low power 32 bit micro MCU with 16 bit short mode, The clock speed supports 80MHz, 160MHz, supports RTOS, Wi-Fi built-in MAC / BB / RF / PA / LNA, built-in antenna. Several pin headers 
Pin header connectors comprise several different means of connection. Generally, one side is a series of pins which are soldered to a PCB, and they can either be at a right-angle to the PCB surface (usually called "straight") or parallel to the board's surface . Such connectors come in a variety of pitches, and may have any number of individual rows of pins. 5 Resistors 12k 
It is the opposition to the flow of electric current through a conductor.1 2 The unit of resistance in the International System is the ohm, which is represented by the Greek letter omega (Ω).
R=V/I
Where R is the resistance in ohms, V is the potential difference in volts and I is the current intensity in amps.2 SW_Push 
A push button is an electrical operator that, when depressed, allows the passage of electric current and, when it is no longer depressed, interrupts it. - A switch is an electrical operator, whose function is to open or close a circuit permanently. 1 capacitor 
A one-hundred nano-Farad capacitor is written as 100nF or just 100n. It may be marked as 0.1 (meaning 0.1uF which is 100nF). Or it may be marked with 104, meaning 10 and four zeros: 100000pF which is equal to 100nF. 1 Zener diode 
Is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A diode vacuum tube or thermionic diode is a vacuum tube with two electrodes, a heated cathode and a plate, in which electrons can flow in only one direction, from cathode to plate. 1 Lock 
Lock used in most homes with blacksmith doors in Tabasco, Mexico. -
Where will come from?
The materials of the structure, the filament, the decoration and the electronic components of mercadolibre and Amazon. -
How much will they cost?
Component Unit Price ($ mx) Total ($ mx) PN532 NFC RFID and Mifare 1 200 200 Servomotor 1 35 35 Voltage regulator sg90 1 9 9 Esp8266 ESP-12F 1 60 60 Several pin headers 1 20 20 Resistors 12k 5 1 5 SW_Push 2 1 2 capacitor 1 2.5 2.5 Zener diode 1 1 1 Lock 1 260 260 Approximate cost 594.5 -
What parts and systems will be made?
Decal for the lock.
Scale door.
Support for the servomotor and the opening and closing mechanism.
Electronics.
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What processes will be used?
For the design of the door I will use Fusion 360 and laser or CNC cutting.
For the design of the sticker I will use Fusion 360 and vinyl cut.
For the design of the parts to join the servomotor with the opening and closing mechanism, I will use Fusion 360 and 3D printing. To design and manufacture the electronic boards, I will use Kicad and the milling and soldering process.
For the programming of the microcontroller I will use Arduino and Linux.
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What questions need to be answered?
How do I determine the number of resistors to use and their capacity?
How do I determine the number of capacitors to use and their capacity?
How do I determine the number of diodes to use and their capacity?
Is the Esp8266 ESP-12F microcontroller the most convenient for my project?
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How will it be evaluated?
For the structure and sequential progress of the classes, I considered that it should be spiral, Neil also said.
The first face is to determine the electronic components of the board.
The second phase is to weld the components and program the microcontroller.
The third phase consists of integrating (modifying) all the components to the lock casing.
The fourth phase consists of testing its operation, that is, carrying out tests and detecting possible errors.
- 2D and 3D design. ✔
- additive and subtractive fabrication processes. ✔
- electronics design and production.✔
- embedded microcontroller interfacing and programming. ✔
- system integration and packaging. ✔