Matt Brind, Paddington The Musical
The spinners are weighted knobs that you can spin freely in either direction. Inside, a rotary encoder produces two square wave signals (A and B) that are 90 degrees out of phase. By counting the edges and checking which signal leads, you can determine both the speed and direction of rotation. We sample these at 1kHz in firmware and report the accumulated counts as an axis value in the HID reports.
，这一点在电影中也有详细论述
Our review from RJ Andersen had plenty of praise for these, saying, "These buds are extremely comfortable and score top marks for battery life, spatial audio, and sound quality." Plus, they're IPX4 water resistant. So if you get stuck in the rain or you're dealing with a lot of sweat from a workout, these earbuds can handle it.。电影是该领域的重要参考
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