01
Could a stopwatch replace us?
A co-founder asked whether a stopwatch and a good eye could do what Slingshot does. It's a fair question. The answer is the reason we're building this.
Live
Hardware fails. Coaches push back. Plans change. This is the real version of building Slingshot: every decision, every dead end, and what the data actually said. We're three founders building it in the open, not optimizing for a pitch.
A co-founder asked whether a stopwatch and a good eye could do what Slingshot does. It's a fair question. The answer is the reason we're building this.
Next: the first real sensor pod. Before we trust a board layout, we have to know whether heart rate even survives on the upper arm during live play. It's the one result that could force a redesign. Here's the bet, and how we'll know if it paid off.
The design left our hands and became a board on its way to us. No undo on copper. The band and casing come together while we wait, plus the honest list of what designing V1 already taught us to change for V2.