2 layers43.9 × 27.7 mm
2 layers49 × 90.1 mm
Vers2 cheaper
pidren/defconbadge20171DEFCON 25 Badge 2017
- Size
- 49 × 90.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 40
- Pads
- 72
- Tracks, vias
- 194, 0
- Routed
- Yes
- KiCad
- KiCad 4
- Created
- 4 Jul 2017
- Updated
- 15 Oct 2019
Overview
Vers2 cheaper is an open-source printed circuit board by pidren, from the pidren/defconbadge2017 repository on GitHub, published under the MIT licence. It is a 2-layer board of 49 × 90.1 mm with 19 parts on 40 nets, routed with 194 tracks and 0 vias.
Its parts include 11 resistors, 5 diodes and 3 connectors.
README
README.md
DEFCON 25 Custom Badge
Custom PCB design and code for DefCon 25 badge. Credits to @mschuldt for help with the PCB design.
Demo Video
Why was this built?
For fun. Also I just wanted to learn how to do something I don't know how to do. At all.
Designing the Custom PCB
Coming up with the final design took about 5 months of continuous redesigning and prototyping. It also took a long time mostly because I didn't know anything about EE before this project. :) The main goals of the PCB was that we would be able to fit all the components desired within the smallest surface area possible, while also looking pleasant and something you'd want to wear around your neck.
What does it do?
- Each individual badge will connect to (unfortunately) hardcoded WiFi network.
- Once connected to a WiFi network, the badges will try to find their "sibling" badges by broadcasting itself on the network.
- A badge will never learn a sibling badge twice, but will try to find as many nearby siblings as possible.
- When a badge knows of at least one sibling in nearby viscinity it will start communicating.
- All badges will communicate to each other independently, and all badges will communicate to all other badges that is learned.
Required Components for Assembly (per badge)
- Custom PCB printed by fab of your choice
- For this badge, I used Oshpark
vers2_cheaper.kicad_pcbis the KiCAD file you can upload.
- SSD1306 OLED Screen
- ESP8266 NodeMCU
- 220 Ohm resistors x 11
- RGB LED x 3
- 3mm LED x 2
- 3.7v 500mAh LiPo battery
- Male microUSB connector, part only
How to Assemble
- Basically solder on all the parts.
- Flash ESP with the arduino code using Arduino IDE version 1.6.4 and above
- To compile correctly, you must have these libraries installed:
- Adafruit_GFX_Library
- Adafruit_SSD1306 Library
- Use board manager to install ESP modules. You'll be using the NodeMCU 1.0 ESP 12E board module.
- You must flash in NodeMCU 1.0 ESP 12E mode. This mode has all the settings you need for the board so you should not have to touch anything.
- To compile correctly, you must have these libraries installed:
- The battery does need manual assembly:
- Clip off the JST end off of the LiPoly battery and solder onto the male microUSB part.
Useful Links
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 10k | Resistors_ThroughHole:Resistor_Horizontal_RM7mm | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 |
| 3 | LED_RCBG | LEDs:LED-RGB-5MM_Common_Cathode | D3, D4, D5 |
| 2 | CONN_01X15 | Pin_Headers:Pin_Header_Straight_1x15 | P2, P3 |
| 2 | LED | LEDs:LED-3MM | D1, D2 |
| 1 | CONN_01X4 | Pin_Headers:Pin_Header_Straight_1x04 | P1 |
Questions
How big is the Vers2 cheaper PCB?
It measures 49 × 90.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Vers2 cheaper use?
19 parts. 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 Vers2 cheaper KiCad files?
From the pidren/defconbadge2017 repository on GitHub, at the commit this page was made from: the board is vers2_cheaper.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Vers2 cheaper design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 2 layers50 × 60 mm
Debate Device
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
19 parts915 - 2 layers102.9 × 96.7 mm
ISA adapter
polpo/picogus
Emulation of ISA sound cards and CD-ROM on Raspberry Pi Pico (GUS, SB/Adlib, MPU-401, Tandy, CMS, Panasonic CD-ROM) with USB mouse/joystick support
19 parts805 - 2 layers60 × 39 mm
- 2 layers70.1 × 43.2 mm
Iaq device
nkitanov/iaq_board
IAQ Board is a DIY (Do-It-Yourself) device for measuring internal air quality
19 parts396 - 2 layers80 × 80 mm
- 2 layers25.4 × 25.4 mm
Ina169
Ardumower/ardumower
Develop an open source robotic lawn mower (HW+SW reference platform)
19 parts282 - 2 layers58.4 × 28.6 mm
New rele
zmaker/arduino_cookbook
gli sketch del nuovo progetto Arduino Cookbook e dei video di YouTube
19 parts269