Hammer Time! A Low-Cost, High Precision, High Accuracy Tool to Measure the Latency of ...
summary
A low-cost automated device called the Latency Hammer electrically simulates a human capacitive touch using a brass contact, heat-sink ground, a mechanical relay switch, a photodiode and an Arduino Due to log end-to-end touchscreen latency. It measures 1 ms–200+ ms, shows frame-quantization at 16.7 ms and heat-induced slowdowns, runs thousands of unattended trials, costs about $100 and reports ~1% error (≈0.25% versus an external delay box), and is being open-sourced.
AI-written summary · about
chapters (5)
- 0:00The challenge of latency
- 10:33Building the latency hammer
- 13:40Analyzing latency data
- 15:01Validation and conclusions
- 18:35Q&A on device measurement
related talks
16mCharacterizing Latency in Touch and Button-Equipped Interactive Systems
34mUsing robots to test mobile apps
40mrtla timerlat: Debugging Real-time Linux Scheduling Latency
33mCyclic Tests Unleashed: Large-Scale RT Analysis with Jitterdebugger
02h 41mMicro Benchmarking - The Art of Realizing One is Wrong
27mReal-time Testing with Fuego
58mHourglass Fuzz: A Quick Bug Hunting Method
25mSelenium at the Speed of Light Turbocharging Your Test Execution