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Full-cylinder force transducers (force plus position) measured the work the user was doing in real time; a large sweat-resistant touchscreen rendered the live workout data. Custom PoE extraction boards, control boards, and high-rate analog-to-digital buffer boards supported the display's polling architecture. The touchscreen included a camera (facial recognition) and a fingerprint reader for member identification.",[112,116,117],{},"I served as the technical lead and a hands-on engineer through the build. The test units deployed to elite military training programs (Air Force Special Forces, U.S. Army), an Olympic training center, a North Carolina installation, and a senior-living community. A reduced variant later shipped with the new touchscreen display retrofitted onto existing equipment.",[112,119,120],{},"The hardest engineering problem was not the hardware. It was synchronizing the rep-data stream from the equipment with member-identity sessions in a way that survived flaky gym wifi and intermittent power. We landed on a buffered local-first model with cloud reconciliation, which is the same pattern most fitness-equipment platforms have converged on since.",{"title":122,"searchDepth":123,"depth":124,"links":125},"",2,3,[],"Keiser Corporation","2022-05","md","Led engineering on Keiser's most ambitious connected-strength platform. PWM-controlled pneumatics, PoE touchscreens, biometric identification, real-time rep streaming.",{},true,[133,134],"Deployed to U.S. Air Force Special Forces, U.S. Army, an Olympic training center, and other research sites","Streaming rep data architecture proven in field deployment","\u002Fwork\u002Fconnected-strength-platform","keiser-itm","Integrated Technology Manager",[139],"~100 test units deployed for evaluation",{"title":106,"description":114},"connected-strength-platform","2018-01","work\u002Fconnected-strength-platform","7 engineers (software) plus cross-functional electrical engineering",[146,147,148,149,150,151,152],"Java","C++","TypeScript","Vue.js","WebSocket","SQLite","WASM","As Integrated Technology Manager at Keiser I led engineering on the most ambitious connected-strength platform the company ever attempted. It replaced manual pressure regulators with PWM-controlled electronic air valves, ran touchscreens off Power over Ethernet, and identified members by face and fingerprint. Rep data streamed to the cloud in real time. About a hundred test units went out to U.S. Air Force Special Forces, the U.S. Army, an Olympic training center, and a handful of other research sites.","eyOyJ4cM7kpJ5qhccguHy_hn8AoeavIiNaxXTovs9O0",1781203293584]