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2 layers68.7 × 53.6 mmOsh park-2-layer kicad-5.99-drc template, the printed circuit board in 3D

Osh park-2-layer kicad-5.99-drc template

Dpopa99/Electroboom

ECE411 Practicum Project

Size
68.7 × 53.6 mm
Copper layers
2
Thickness
1.6 mm
Parts
20
Nets
41
Pads
76
Tracks, vias
102, 168
Pours
2
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
13 Oct 2022
Updated
8 Dec 2022

Overview

Osh park-2-layer kicad-5.99-drc template is an open-source printed circuit board by Dpopa99, from the Dpopa99/Electroboom repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 68.7 × 53.6 mm with 20 parts on 41 nets, routed with 102 tracks and 168 vias.

It is built around the 1N4148W. Its parts include 7 connectors, 4 resistors, 2 diodes and 1 switch.

Main components

1

README

README.md
  • Group Member Names: David Popa | Jade Nguyen | Pushpesh Sharma | Shyamal Singh
  • Title: ElectroBoom
  • Course: ECE411 Fall 2022
  • Date: Oct 13, 2022
  • Revision: Version 1.0

Problem Statement and Concept of Operations

Self defense is a necessity in our everyday lives. Whether you go on late night walks in downtown or spend your time in the rural side of town, you have to be prepared to defend yourself in a attack on your person. The stun gun in its mounted state creates a non-lethal electric shock used to stop an intruder from trespassing in an unauthorized area. The device is connected to an entrance door and upon activation of the device, any unauthorized operation of the door will send an electric shock from the device to the door thus immobilizing the assailant. Although they lack some advantages, such as the capacity to render an adversary helpless or a larger range, they are highly regarded for their ease of use and accessibility. The device is mounted, its size and weight make it portable and versatile. The overall product offers a sense of security and vigilance and should be marketed as such. The final marketing team should strongly consider any number of regulations as well as the variance in stand your ground laws within the U.S and internationally.

Market Analysis

As a mounted device, it can be used by a vast number of customers such as small businesses owners, street food vendors, landlords, storage units owners, RV/Van campers, etc. to protect their belongings and themselves. Over the development of the product, it can be marketed to bigger businesses, corporate offices, banks, armored vehicles, private security firms, as well as in home security companies.

The competition can be felt through any of the manufacturers selling pre-installed security devices as well as products that offer multipurpose use such as the Ring Doorbell etc. Our product is in a completely different region as it targets a specific audience: the self-made individuals who are vigilant and don't hesitate to do what's necessary to protect what's theirs.

In comparison to other security devices and their features, our device can be priced within the $40-$50 range. There are several key factors that affect this price and as our design and overall ideas develop, the price may be adjusted accordingly. Factors like the mounting apparatus, 3D printed casing, any user interfaces used, and the cost of internal parts such as the transformer, connectors, and the PCB will eventually determine the final price for our product.

Product Requirements

  • Must be a rugged design for versatile use and placement.
  • Must send a non-lethal electric shock.
  • Must be marketed as a plug in device.
  • Must not overheat. (Check transformer behavior in various situations)
  • Must be operated via a Door actuated sensor.
  • Should have the ability to be deactivated via remote or physical switch.
  • Should have LED indicators to dictate state of device (Armed or Disarmed)
  • May have 3D printed enclosure for all components
  • May have Display to show state of device (Active, Triggered, Inactive)

System Architecture (Currently in Design)

Option 1 Option 2

Design Specification

  • Sensor: Door knob movement actuating motion sensor, metal contact to send electric shock
  • Processor: ATMega328P microcontroller with Arduino IDE for processing motion sensor activity to send electric shock via transformer. Firmware used will be the Bootloader.
  • Actuator: High voltage transformer taking input voltage and sending converted voltage at variable frequency chosen shock apparatus.
  • Power: 9V wall adapter feeding a high voltage transformer

Breadboard Prototype

image image

As seen from pictures above, the prototype is about finished and all that is needed to have a fully working prototype is the transformer (parts on their way). Image 1 shows the green LED on while the two door sensors are attached, this indicates that the system is armed and ready to go. In the second image, a red LED is shown, meaning that the door has been triggered and the voltage would be discharged out of the two open prongs that would be if the transformer parts were obtained. The video below shows the working prototype.

Current status 11/02/2022: We are awaiting the arrival of our 3.3V to 2000V transformer, upon arrival, we will assemble, test, and commit this transformer to our circuit. Along with this transformer, we will run tests to ensure that the voltage and current combinations will be safe for human contact, however, it is still reccomended that all testing be done by non-human contact, for the safety of our staff, faculty, and students.

https://user-images.githubusercontent.com/115689153/199646965-d1418cc2-3406-4b21-8939-66e534c145ff.mov

License

GNU General Public License v2.0 The GNU GPL is the most widely used free software license and has a strong copyleft requirement. When distributing derived works, the source code of the work must be made available under the same license. There are multiple variants of the GNU GPL, each with different requirements.

See Documentation file in this repository for all sources used for this project

Parts

20
QtyValueFootprintReferences
4MountingHole_3.2mmArduino_MountingHole:MountingHole_3.2mmMH1, MH2, MH3, MH4
3330Resistor_SMD:R_0805_2012MetricR2, R3, R4
2Conn_01x02Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ5, J6
110KResistor_SMD:R_0805_2012MetricR1
11N4148WDiode_SMD:D_SOD-123D1
1AnalogConnector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_VerticalJ3
1Conn_01x16_FemaleConnector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_VerticalJ7
1Digital/PWMConnector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_VerticalJ2
1Digital/PWMConnector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_VerticalJ4
1LED_BARGLED_THT:LED_D5.0mm-4_RGB_Wide_PinsD2
1LOGOgraphics:graphics2G***
1PowerConnector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_VerticalJ1
1R_Potentiometertrimmer:TRIM_3362P-1-505LFRV1
1SW_SPDTslideswitch:EG1218SW1

Questions

How big is the Osh park-2-layer kicad-5.99-drc template PCB?

It measures 68.7 × 53.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Osh park-2-layer kicad-5.99-drc template use?

20 parts, built around the 1N4148W. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Osh park-2-layer kicad-5.99-drc template KiCad files?

From the Dpopa99/Electroboom repository on GitHub, at the commit this page was made from: the board is PCB files/osh-park-2-layer-kicad-5.99-drc-template.kicad_pcb and its schematic PCB files/osh-park-2-layer-kicad-5.99-drc-template.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Osh park-2-layer kicad-5.99-drc template design in my own project?

Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

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