I am now Selling masks also: https://www.ebay.com.au/str/buildcircuitstore/Masks/_i.html?_storecat=30945276010. You can pick up from St. Marys, NSW. Place the order and I will give pickup details

This product is shipped from Sydney, Australia. Worldwide shipping available- we ship to USA, Canada, New Zealand, UK, EU and Non-EU countries.

Watch this video to know how it works: https://youtu.be/npsZ3hi_f0E

We are now selling a fully assembled and tested kit. It comes with a laser module. This is 3 digits digital objects counter learning kit for electronics beginners and hobbyists. You can use this 3 digits digital object counter for counting objects or people entering a room. It can be used by engineers for learning about digital counters. This DIY digital object counter works with a photoresistor and there are three seven segment displays displaying numbers from 000 to 999. The kit is based on CD4026 and NE555. The kit works accurately with laser module and photoresistor. There is no false counting.

Turn on the laser module and direct it towards the photoresistor and hit the photoresistor with the laser beam so that whenever the laser is blocked, the counter would count. The counter module works with 5V. You just need to power up the kit using a 5V mobile charger or any other power adapter.

Features:

The distance between the laser module and photoresistor can be 10cm-10 meters. Make sure the laser hits the photoresistor.

The counter module can be reset to 000 at any time and restart the counting.

What's NEW ? 

The output of the kit is highly stable, there is no false triggering/count at all.  It is 100% accurate.

Package Includes:

• 1 x 3 digits counter module
• 1 x laser module