【TECH】Local-first health data design in MonoPump
How MonoPump keeps heart-rate history useful without turning private measurements into cloud data or medical claims.
Product guide
Pulse history and contextMonoPump
Track pulse readings with notes and context when one-off measurements are not enough to understand changes over time.
- Guided capture
- Private history
- Exportable records
Overview
MonoPump Pulse history and context
MonoPump helps turn camera-based pulse estimates into a private local record: guided capture, labels, notes, trends, and exportable reports for personal review.
Related topics
- pulse history
- camera pulse measurement
- private health records
MonoPump engineering notes
MonoPump engineering notes
Technical decisions, implementation details, and product context published for MonoPump.
【TECH】The state machine behind a calm heart-rate measurement
Why MonoPump treats measurement as a staged state machine instead of a single start-and-stop camera action.
【TECH】Counting beats: peak detection and BPM estimation
How MonoPump turns a cleaned PPG waveform into BPM using peak spacing, timestamp intervals, outlier filtering, and EMA smoothing.
【TECH】From camera frames to a heartbeat signal
How a stream of red-channel measurements becomes a usable PPG waveform through timing, detrending, smoothing, and buffering.
【TECH】Detecting whether a finger really covers the camera
How MonoPump uses color ratios, brightness bounds, red dominance, and frame smoothing to decide when measurement can begin.
【TECH】Camera PPG: why a phone camera can see a pulse
A practical explanation of how MonoPump turns camera frames, flash light, and blood-volume changes into a pulse signal.