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 →The Conductivity Sensor Switch Gravity is a button or switch input module with digital output designed for power monitoring, motor feedback, magnetic detection, and control systems. 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; Output Signal: Digital; Interface Mode: PH2.0-3P.
| Product | Sensor style | Standout |
|---|---|---|
| Conductivity Sensor Switch Gravity | button or switch input module with digital output | Current item |
| Current 20A Analog Sensor Gravity | electric current electric potential magnetic sensor module with analog output | analog output, hall-effect detection |
| Reed Switch 2 x 14 mm Normally Open 10PCS | magnetic sensor with digital output | normally-open switching, capacitive touch input |
| Current AC Sensor Analog Gravity | electric current electric potential magnetic sensor module with analog output | analog output, remote probe format |
This sensor is a good fit for current meters, motor drivers, magnetic door sensing, power dashboards, and fault alerts.
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus a breadboard and jumper wires for quick setup and testing.
Useful add-ons include a microcontroller board, jumper wires, and pull-up or pull-down support when needed, depending on how you plan to power, mount, and log the sensor.
| Product | Conductivity Sensor Switch Gravity |
|---|---|
| Interface Mode | PH2.0-3P |
| Output Signal | Digital |
| Operating Voltage | 3.3 ~ 5V |
| Weight | 22g |
| Gravity | Conductivity Switch Sensor x1 |
| Dimension | 30 x 22mm |
| Alligator clip Length | 45cm |
| Maximum Detecting Resistance | 10MΩ |
Connect power and ground, then wire the output pin to a digital GPIO input. Check whether the module uses active-high or active-low logic in your code.
1 × Conductivity Sensor Switch Gravity
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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.
view thread →