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 1-Slot AA Battery Holder Without Cover is a simple power holder for one standard AA battery. It is useful for small electronics, science projects, circuit testing, toys, LED projects, and basic DIY builds.
The open design makes it easy to insert and remove the battery. Metal contacts on each end help hold the battery securely while creating a stable electrical connection. Attached wires can be connected to a circuit board, motor, LED, switch, or other compatible device.
The holder is made from black plastic with metal contact parts. Its compact size makes it easy to fit inside small project boxes, models, and custom enclosures. The listed dimensions are about 58 × 16 × 16 mm.
A single AA battery usually provides about 1.5V, depending on the battery type. Always check the voltage and power needs of your project before making a connection. Follow the correct positive and negative wire polarity to prevent circuit problems.
Since this model has no cover, the battery remains easy to access. It is best installed in a dry area where the battery will not be exposed to water, dirt, or loose metal objects.
This battery holder is a practical choice for students, makers, repair work, and quick circuit tests. It provides a clean and simple way to connect one AA battery without soldering directly onto the battery terminals.
Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.
Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.
Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.
Most parts work with common maker boards — check the description for specific pinout / voltage notes. If you're unsure, send us a message before ordering.
7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used / installed parts are not returnable unless faulty.
Yes — questions land on our forum or via email, weekday or weekend. We've actually wired up most of what we sell.
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 →