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 YXT020 300pcs LED Assortment Kit is a handy LED set for electronics projects, school activities, Arduino builds, repairs, and basic circuit testing. It includes both 3mm and 5mm LEDs in common colors, packed in a plastic storage box for easy sorting.
This kit is useful for makers, students, hobbyists, and technicians who need assorted LEDs for prototypes, breadboard tests, indicator lights, displays, and low-voltage circuit projects.
This kit includes 300 LEDs in 3mm and 5mm sizes.
Note: Resistors are not included. Use the correct current-limiting resistor for each LED to help prevent damage.
| Product Type | LED assortment kit |
|---|---|
| Model / Item Code | YXT020 |
| Total Quantity | 300 pcs |
| LED Sizes | 3mm and 5mm |
| Colors Included | White, green, blue, red, and yellow |
| Listed Voltage | 2.0V to 2.5V DC |
| Listed Current | 10mA to 20mA |
| Storage | Plastic storage box |
| Best For | Arduino projects, breadboard testing, school labs, repairs, and DIY electronics |
Always connect an LED with a proper current-limiting resistor. Direct connection to a power source may burn out the LED.
LED polarity matters. The longer leg is usually positive, while the shorter leg is usually negative. Check polarity before powering your circuit.
The kit includes 300 assorted LEDs.
The kit includes both 3mm and 5mm LEDs.
It includes white, green, blue, red, and yellow LEDs.
Yes. These LEDs are useful for Arduino output projects and breadboard tests.
Yes. Use a current-limiting resistor to help protect each LED.
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.
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 →