RPM Apprentice

WMH Racing – RPM Apprentice Precision. Performance. Insight. Meet the RPM Apprentice — a next-generation RPM analyzer designed by WMH Racing to bring professional-grade motor diagnostics to your workbench. Engineered around the powerful ESP32-S3 and a full-color 2.4” touchscreen, this compact device measures, visualizes, and records brushless DC motor performance with speed and accuracy once reserved for lab equipment. 🔧 Engineered for Real-World Testing From bench dynos to ESC calibration, the RPM Apprentice turns raw motion into actionable data: High-Speed Measurement – Accurately captures up to 220,000 RPM from three independent Hall or sensor channels. Dynamic Graphing – Real-time RPM histogram and acceleration plots update every 50 ms, revealing trends instantly. Three-Target Timing – Measure acceleration times to custom RPM milestones for power and performance benchmarking. 🌐 Wi-Fi Connected Forget the cables — your RPM data goes wherever you do. The RPM Apprentice hosts its own wireless access point and web dashboard, so you can: View live RPM and max RPM in any browser Download raw .csv test data instantly Review target times and performance history remotely ⚙️ Built by Racers for Racers Feature Specification Processor ESP32-S3 dual-core 240 MHz Display 2.4″ TFT (320×240) with touch Inputs 3× sensor channels (up to 240 kRPM) Update Rate 50 ms (20 Hz) Graph Window Up to 12 seconds (240 samples) Connectivity Wi-Fi Access Point + Web UI Data Export .csv with RPM, ω, and α values Supply 5 V USB-C ⚡ Precision Meets Simplicity Compact, durable, and intuitive, the RPM Apprentice bridges the gap between lab instrumentation and garage innovation. Whether you’re tuning RC motors, validating BLDC designs, or pushing your next race setup to its limit — the Apprentice gives you the data you need to go faster, smarter, and further.