Perpetual Wearable Biosensing with Andy Kong
Andy Kong, founder of Chargerless, explains how his pre-seed wearable biosensing device achieves perpetual operation using just one minute of daily sunlight. He details the system architecture, which relies on a deliberately underpowered microcontroller and custom-built analog front-end circuitry to minimize power consumption. The device samples biometric data, such as heart rate via PPG, at low frequencies to maintain battery life while offering features comparable to commercial trackers like the Apple Watch and Whoop. Kong also discusses his experimental 'Power over Skin' project, which uses human body communication to transmit milliwatts of power through the body for charging.