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Connect a 4k7 Ω pull-up resistor between the 1-Wire data line and 5V power. Note this applies to the Arduino platform, for ESP32 and 8266 you'll need to adjust the resistor value accordingly. For ...
Abstract: A fully integrated 3-D ultrasonic fingerprint sensor-on-a-chip is presented. The device consists of a 110× 56 piezoelectric micromachined ultrasonic transducer (PMUT) array bonded at the ...
Surface Plasmon Resonance Enhanced Plug-and-Play Copper Ion Sensor Based on a U-Shaped Optical Fiber
Abstract: For human health and environmental protection, the identification of heavy metal ions in seawater is of great importance. Here, we presented and demonstrated a surface plasmon resonance (SPR ...
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