- Sources: Show HN discussion
- Summary: A Show HN on 2026-07-19 describes replacing a bowling center's roughly 120,000 USD proprietary scoring and lane-control system with about 1,600 USD of ESP32 microcontrollers. The author reports building lane sensing and control on ESP32 boards, using ESP-NOW for low-overhead wireless messaging, and plans to add LED and DMX lighting control.
- Comments: HN commenters ask for a detailed technical write-up, discuss ESP-NOW as a lightweight WiFi-based messaging option that skips association, and note the maturity of the ESP32 hardware ecosystem for physical projects.
- Why it matters: The thread is a widely upvoted example of commodity microcontrollers displacing a costly vertical-market proprietary system.
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