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 →
Simple Numeric Output for Counters, Clocks, and Readouts
The LED Piranha Module Digital Blue Gravity is built for clear number display in counters, timers, clocks, measurement readouts, and status panels. It is a practical option when you need to show digits quickly and clearly.
These modules are commonly used in DIY timers, basic instruments, scoreboards, and simple UI projects. They are easy to fit into many classroom and workshop builds.
Why you'll love it
- Voltage: +3.3-5V
- Pin Definition : 1 - control 2 -GND 3 --- Power
- Weight: 5g
- Color: Blue
- LED light module-Blue x1
What you can build
Use it for clocks, timers, counters, dice projects, scoreboards, sensor values, and compact readout panels.
Starter bundles
Pair it with Arduino Nano, RTC modules, buttons, and breadboards for quick display projects.
Recommended add-ons
Helpful add-ons include buzzers, enclosures, and power modules for complete timer or counter builds.
Technical specifications
| Product | LED Piranha Module Digital Blue Gravity |
|---|---|
| Color / light type | Blue |
| Platform fit | Arduino |
| Voltage | +3.3-5V |
| Pin Definition | 1 - control 2 -GND 3 --- Power |
| Weight | 5g |
| Color | Blue |
| Digital Cable(SKU | FIT0011) x1 |
Pinout & usage notes
Check whether the display is common anode, common cathode, or driver-based before wiring. Driver modules can simplify pin use on your controller.
What’s in the box
1 × Numeric display module as named in the title.
Frequently Asked Questions
Can I use this for a clock?
Yes. Numeric displays are commonly used for clock and timer projects.
Do I need resistors?
That depends on the module design. Bare displays and some simple builds do need proper current limiting.
What is common anode or cathode?
It describes how the LED segments are wired internally and affects how you drive the display.
Is this good for beginners?
Yes. Numeric displays are great for simple counting and timing projects.
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 →