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 →
If you want to use the same component, sensor, or module with the same I2C address that you cannot modify, you may do so using another I2C library different from the wire library pre-installed in the Arduino IDE. The problem using this library is that you also need to revise the libraries to be used that is dependent on the wire library. Another solution is to use a hardware I2C multiplexer, that could give you more I2C busses.
This module uses TC9548A chip that enables the use of 8 channel independent I2C busses. It could be powered up using 3V to 5V power supply. It is modifiable from 0x70 to 0x71, but it is 0x70 by default. You could use 8 of this multiplexer that could control up to 64 independent I2C busses.
There are 24 pins on this breakout board; 16 pins are for the 8 channel independent I2C busses. 2 pins for the I2C communication bus from the Arduino board to the multiplexer with SDA and SCL label. 3 pins labeled A0, A1, A2 for modifying the multiplexer address. Lastly are the 2 pins for the power supply (VIN/GND).
You could use this in a wide range of applications, such as displaying different texts on multiple OLED LCDs.
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 →