Circular PCB

ATtiny-Chainy 🔑

Overview

ATtiny-Chainy is an innovative, compact circular development board that reimagines the potential of microcontroller design for makers and electronics enthusiasts. Built around the powerful Microchip ATtiny85 microcontroller, this board transforms the concept of a traditional development platform into a versatile, portable, and user-friendly solution. The ATtiny85 is a high-performance, low-power 8-bit AVR RISC-based microcontroller that packs significant capabilities into a tiny package. With 8KB of in-system programmable flash memory, 512 bytes of EEPROM, and 512 bytes of internal SRAM, this microcontroller offers robust functionality for a wide range of embedded projects. Its ability to operate at clock frequencies up to 20 MHz and support for various communication interfaces makes it an ideal choice for small-scale, creative electronics endeavors.

Key Features 🌟

• Circular PCB Design: Unique form factor that's both functional and eye-catching
• Keychain Compatible: Integrated punch hole for easy carrying
• M2 Mounting Option: Secure attachment to platforms using a standard M2 screw
• Single-Layer PCB: Easy to manufacture at home using chemical etching or CNC routing
• Minimalist Component Design: Perfect for hobbyists and makers

Technical Specifications 🛠️

• Microcontroller: ATtiny85
• Programming Interface: Micro USB port for direct PC programming via Arduino IDE
• Power Options:
  • USB-powered
  • External supply through Vin
  • 5V supply pins
• Operating Voltage Range: 1.7V to 5.5V
• Experimental Power Option: Direct LiPo battery connection to 5V pins (use with caution)
• Form Factor: Circular PCB
• Mounting Options:
  • Keychain attachment
  • M2 screw mounting
• Layer Count: Single Layer
• Compatibility: Arduino IDE programmable

OSHWA Certification

ATtiny-Chainy has been officially certified as open source hardware by the Open Source Hardware Association (OSHWA).

• Certification UID: DE000151
• Certification Directory Listing: View Listing
• Project Directory: Direct Link

As an OSHWA-certified project, ATtiny-Chainy adheres to the open-source hardware definition, ensuring transparency, collaboration, and accessibility for the maker community. The certification mark can be used alongside this project in compliance with OSHWA guidelines.

Getting Started

Makers can quickly get started with ATtiny-Chainy by cloning the repository, reviewing the schematic, and manufacturing the PCB using their preferred method. The board's design emphasizes simplicity and accessibility, allowing both novice and experienced electronics enthusiasts to bring their projects to life with minimal barriers to entry.

License 📄

ATtiny-Chainy is released under the Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0) license. This means the project is freely available for sharing, adaptation, modification, and redistribution, with the requirement of providing appropriate credit to the original creator. The open-source nature of this project encourages collaboration, learning, and innovation within the maker community.

• ATtiny-Chainy © 2024 by Chowdary Manyam (Schrodinger Guru) is licensed under CC BY-SA 4.0

Inspiration

Inspired by DigiStump's DigiSpark, ATtiny-Chainy takes the concept of a compact development board and elevates it with a unique circular design, enhanced portability, and maker-friendly features. It represents a fusion of practical design and creative engineering.

Disclaimer

This is a community project. Always follow proper electronics safety guidelines when working with microcontrollers and PCBs. The experimental power options, such as direct LiPo battery connection, should be approached with caution and a proper understanding of electrical characteristics.

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Happy Making!