Fingerprint Sensor AS608 - A Beginner's Guide
One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →Three sensors fused into a single module, namely a barometric pressure BMP180, magnetoresistive compass HMC5883L, and accelerometer + gyroscope MPU-6050.
The MPU6050 is a Micro-Electro-Mechanical Systems (MEMS), which consists of a 3-axis accelerometer and a 3-axis Gyroscope inside it. It helps us to measure acceleration, velocity, orientation, displacement, and much another motion-related parameter of a system or object.
The HMC5883L is a 3-axis digital compass. It measures the magnetization of a magnetic material. And, in some cases, the direction of the magnetic field at a point in space.
The BMP180 is a sensor designed to measure Barometric Pressure. The air has weight, and wherever there is air, it pressurizes. BMP180 sensor senses that pressure and provides that information in digital output.
This sensor integrates with your MCU by connecting it to your I2C pins(SDA/SCL) and power of 3.3V to 5V to the power pins(VCC/GND).
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One touch can replace keys. This project uses an optical fingerprint sensor to enroll users and then grant access with a quick scan.
read tutorial →Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Bench-test a 43 A motor driver before wiring the full project. Catches weak power, mis-pinning, and dead boards before they cost you time.
read tutorial →Coming from UNO and the Pico won't show a COM port? Here's the BOOTSEL trick, the driver fix, and the first sketch that actually works.
read tutorial →Share what you built. Photos, BOM, what worked, what didn't.
view thread →Symptom + what you tried + clear photo = answers within hours.
view thread →Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
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