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Arduino Library
Arduino SKU DFR0438 Brand DFRobot Interface Digital Operating voltage 5VDC Operating Current 20mA (Max) Dimensions 30*22(mm)/ 1
Potentiometer: for LCD1602 contrast adjustment
Model Raspberry Pi 2 Model B (legacy) SoC / CPU Quad-core ARM (Cortex-A7 class) ~900 MHz (later revs may use BCM2837 at similar speed) Memory 1 GB LPDDR2 Storage microSD card slot (boot & OS) USB 4 × USB 2
This board uses the sim808 chip that supports Quad-Band 850/900 1800/1900 MHz
Seeed Grove Piezo Vibration Sensor - 101020031 magnetometer Arduino LibraryDetect Sound and Vibration for Smarter Projects The Piezo Vibration Sensor Grove is a vibration sensor with analog output designed for sound detection, vibration alerts, and machine monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds. Key details include Operating Voltage: 3. 3 5V; Interface type: Analog Signal . Why youll love it Wide dynamic range0. 001Hz~1000MHz: Wide dynamic
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