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 CD800A Digital Multi Tester is a compact and reliable digital multimeter for daily electrical testing. It is made for checking low-voltage circuits, small appliances, batteries, lighting voltage, and small communication equipment. It gives users a handy way to measure common electrical values with one easy-to-use tool.
This tester features a 4000-count digital display with clear, high-contrast readings. It can measure AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, continuity, and diode status. This makes it useful for repair work, electronics projects, school labs, and basic troubleshooting.
The CD800A supports up to 600V AC/DC voltage measurement and has a best accuracy of ±0.7% for DC voltage. It also includes auto range and manual range options, so users can choose between fast setup or more control while testing.
Its solid body cover helps protect the meter during use and storage. The cover can also work as a tilt stand, letting you place the tester upright while reading values. This is helpful when both hands are needed for test probes or circuit work.
Display: 4000-count LCD
DC Voltage: 400mV / 4V / 40V / 400V / 600V
AC Voltage: 4V / 40V / 400V / 600V
DC Current: 40mA / 400mA
AC Current: 40mA / 400mA
Resistance: 400Ω to 40MΩ
Capacitance: 50nF to 100μF
Frequency: 5Hz to 100kHz
Battery: R6P 1.5V x 2
Size: H176 x W104 x D46mm
Weight: Approx. 340g
Use this tester within its rated limits only. Always follow the instruction manual before testing live circuits.
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 →