Show HN: I replaced a $120k bowling center system with $1,600 in ESP32s

# Summary A site reliability engineer replaced a $120,000 bowling center scoring system with custom hardware built from ESP32 microcontrollers, costing approximately $1,600 total ($200 per lane-pair). The DIY solution uses ESP32 controllers connected via mesh networking to handle ball speed detection, pin detection, animations, and machine control—functions that the original expensive system performed through mostly mechanical processes. By leveraging open-source hardware, computer vision, and off-the-shelf components, the author demonstrated that modern technology can replicate decades-old proprietary systems at a fraction of the cost.