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 →
SIM900-based GSM/GPRS shield that stacks straight onto your Arduino. Give any project the ability to send and receive SMS, make and take calls, and pull data over GPRS. Handy when WiFi isn't around.
GPRS class B, so it runs one service at a time. A call or SMS pauses the GPRS session and it resumes once you're done.
Specs
| Chip | SIM900, quad-band 850/900/1800/1900 MHz |
| GPRS | Multi-slot class 10/8, mobile station class B (one service at a time) |
| Control | AT commands (GSM 07.07, 07.05 + SIMCOM extended) |
| Supply | 3.1V to 4.8V |
| Sleep current | ~1.5mA |
| Operating temp | -40C to +85C |
| Extras | 2-in-1 headset jack |
Pop in a SIM and it does most of what a basic phone does. Good base for a DIY phone, remote alerts, or an SMS-controlled build.
FAQ
Will this ship from Manila?
Yes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J&T or LBC.
Do you ship nationwide?
Yes. Metro Manila usually arrives next-day; provincial 1–3 working days.
Can I get this on a school PO or class order?
Yes — we accept Purchase Orders from accredited schools and universities. Contact us with your PO details and we'll process it.
Is this compatible with Arduino, ESP32, or Raspberry Pi?
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.
What's your return policy?
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.
Do you offer technical support?
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.
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