Space Pony Overview

This repo contains the project files for two Silly Add-On (SAO) Printed Circuit Boards (PCBs) for DEFCON 31.

User Guide

Where to buy the units is explained here:

A summary of the key features and interfaces are documented in the following video:

Space Bits R Us

This is the team badge for those competing in the Hack-a-Sat competition. These are exclusive badges for the team and not for general sale.

Pony Circuit Board

• These badges present "My Little Pony Friendship is Magic" characters surrounded by LEDs.
• These badges are for sale, $20 per unit. There are 11 unique designs.
• Each "Space Bits R Us" team member (identifiable because they are wearing the "Space Bits" badge described above) will have several units for sale.
• Visit the Hack-a-sat competition area immediately before, or immediately after competition each day to acquire one.
  • Specifically: ---before 10 AM Friday/Saturday---, after 8 PM Friday/Saturday, before Noon Sunday, or after 1:30 PM Sunday.
• Excess stickers were attached to colored acrylic for general distribution
  • Only white acrylic units have LEDs

Features

• STM8S003F3P6TR Processor
  • 8 kB Flash
  • 1 kB RAM
  • 128 B EEPROM
• Microphone
• 16 MHz clock, 10 ppm
• LiPo Battery
  • 40 mAh LIR2032 LiPo (Pony SAO)
    • ~2 hours battery life at max brightness
  • 500 mAh 502540 LiPo (Space Bits R Us SAO)
    • ~25 hours battery life at max brightness
• LiPo Charger
  • ~3 hours to charge from 3V to 4.2V
• Developer header
  • 5V charging input
  • ST SWIM Interface
  • 57600 MBaud UART
  • I2C
• SAO 4-pin header pads
  • Under BT1 (Pony SAO)
  • Under Acrylic (Space Bits R Us SAO)
• 10x RGB LEDs
• 12x White LEDs
  • Space Bits R Us SAO Only
• 1x Status LED
  • Green
    • 5V input is present
    • Battery is fully charged, if present
  • Green + Blue = Cyan
    • Battery Charging is Underway
  • Red
    • A user button is pressed, or UART terminal is active

Schematic

Hardware

Design

• Concept, Project Management, PCB Design, Software Architecture: Scott Almond
• Morse Code, Cyclone Game, Terminal Artwork: Brian Wilkins
• Pony & space artwork: Sugar Morning

Fabrication & Tools

• PCB design in EasyEDA; PCB/PCBA fabrication through JLCPCB
• Acrylic stock, 45% lighting white, 1/8" thick through TAP Plastics
• Acrylic cutting in-house using a LC40 Dremel laser cutter
• Stickers fabricated by Sticker Mule
• Through-hole LEDs, batteries, and support hardware (protoboards, pogo pins, etc) purchased through Aliexpress vendors

Eratta

• STM8 programming reference: https://hackaday.io/project/161239-stm8s-development-board
• STM8 programmer setup: https://circuitdigest.com/microcontroller-projects/getting-started-with-stm8s-using-stvd-and-cosmic-c-compiler
  • Including Cosmic C license request (allow 2 business days to get a key) ref. https://github.com/NevynUK/The-Way-of-the-Register
• How to fix git login: https://www.youtube.com/watch?v=EaN7TnD8RvM