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 →
Add Reliable Water Pressure Sensor Analog Gravity Sensing to Your Next Build
This is a water pressure sensor adopts DFRobot Gravity 3-pin interface. It supports standard 5V voltage input and 0.5~4.5V linear voltage output. It is compatible with multiple Arduino controllers. Coordinate with a DFRobot Gravity IO Expansion Shield, the water pressure sensor can be plugged into an Arduino board, wiring-free. Put it with Solenoid Valve, Water Turbine Generator and other sensors, you can build a smart water control system.
Briefly speaking, this water pressure sensor is a stethoscope to a water pipe. It will help you to diagnose whether there is water, how strong the water pressure is. It can be widely applied to smart home control systems (SCS), Internet of Things (IoT) and device detections.
Important: Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.
Why you'll love it
- Support water pressure detection of living environmental water systems, such as houses, gardens and farms
- Support water pressure detection of outdoor environment, such as rivers, lakes and sea
- Support water pressure detection of tanks;
- Support liquid level detection in special situation detection in specified liquid;
- Medium: liquid/gas without corrosion
- Wiring: Gravity-3Pin (Signal-VCC-GND)
What you can build
This part fits monitoring, measurement, logging, alarms, and automation builds. It works well in Arduino, ESP32, and Raspberry Pi style projects where you need reliable real-world data from the water pressure sensor analog gravity.
Starter bundles
Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus sensor cables, headers, or a matching expansion shield for faster setup.
Recommended add-ons
Useful add-ons include displays, data logging modules, waterproof enclosures, and matching Gravity cables or sensor shields.
Technical specifications
| Product | Water Pressure Sensor Analog Gravity |
|---|---|
| SKU | SEN0257 |
| Brand | DFRobot |
| Interface | Analog |
| Medium | liquid/gas without corrosion |
| Wiring | Gravity-3Pin (Signal-VCC-GND) |
| Pressure Measurement Range | 0~1.6 Mpa |
| Input Voltage | +5 VDC |
| Output Voltage | 0.5~4.5 V |
| Measurement Accuracy | 0.5%~1%FS (0.5%, 0~55°C) |
Pinout & usage notes
For analog readings, use a stable reference and keep wiring short when possible for cleaner signals. If you are using Gravity connectors, align the plug correctly and avoid forcing the cable into the wrong header.
DFRobot resources
Official product page: View on DFRobot
Wiki / documentation: Open DFRobot wiki
What’s in the box
1 × Water Pressure Sensor Analog Gravity
Frequently Asked Questions
Can I use this for logging or monitoring projects? Yes. It is a good fit for data collection, automation, and alert-based builds when paired with a supported controller.
Does it work with other boards too? Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.
Where can I find wiring and examples? Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Customers also bought
Build with this board
Thumb Joystick - A Beginner's Guide
Wire a joystick to your Arduino, read X/Y, then print UP / DOWN / LEFT / RIGHT to the serial monitor.
read tutorial →Motor Drive (BTS7960 43A) - A Beginner's Guide
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 →Raspberry Pi Pico (RP2040) - A Beginner's Guide
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 →Notes from the bench
Ask the community
Project Showcase — show what you built
Share what you built. Photos, BOM, what worked, what didn't.
view thread →How to ask a good question (and actually get answers)
Symptom + what you tried + clear photo = answers within hours.
view thread →ESP32 brownout when wiring a sensor — fixes that worked
Brownout reset when adding a sensor? Notes on supply decoupling and GPIO checks.
view thread →First Arduino — sketch upload error, what to try?
Upload failing on your first Uno? Driver, COM port, board match — checklist inside.
view thread →