# John Park’s CircuitPython Parsec: I2C Target

**Published:** 2026-10-09T15:06:00+00:00  
**Source:** Adafruit Electronics  
**Category:** open-hardware  
**Canonical URL:** https://fosswire.org/news/john-parks-circuitpython-parsec-i2c-target.html  

## Executive Summary
You can turn a microcontroller into an I2C target for a second microcontroller. What is this witchcraft? Try out the code example To learn about CircuitPython: https://circuitpython.org

## Architectural & Systems Analysis
From a silicon and hardware engineering viewpoint:

- **Interface Neutrality:** Mitigates dependency on proprietary BSPs, empowering open toolchains to address hardware directly.
- **Supply Chain Verification:** Schematics and open pinouts allow deterministic audits against silicon errata.
- **Lifecycle Decoupling:** Decouples physical hardware utility from commercial vendor end-of-life obsolescence.

## Impact on the Open Ecosystem
Ensures that computational autonomy remains in the hands of the architect rather than closed silicon vendors.