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 →This is a standard LED Current Meter 50A. The biggest feature is that the LED Current Meter have reversed connection protection to prevent from being burnted out. It measures 0-50A with 2% error. Best suitable for current display in the circuit. Just apply four wires without any extra circuit or components, you will get the readings displayed straight away. Easy to use, and good company with robot applications. It has two color LED display to select, green/red.
Warnings: Please carefully follow the instructions for wiring. The power supply terminal and measurement terminal of this Current Meter are using the same common-ground connect. So, the measurement terminal of current meter must be cascaded after load. The measurement terminal must be link to the ground side, Do NOT link it to positive side, it will damage the meter permently.
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Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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 →