SMALL- 3 digits digital object counter DIY learning kit
Works with laser light and infrared
This is the most popular digital object counter. More than 10,000 copies have been sold in 70+ countries since 2012. It is a popular kit among electronics beginners and hobbyists.
You can use this 3 digit digital object counter for counting objects or people entering in a room. It can be used by engineers for learning about digital counters.
This DIY digital object counter works with VS1838 infrared receiver and photoresistor and there are 3 seven segment displays displaying numbers from 0 to 999. An IR transmitter is directed towards the VS1838 infrared receiver of the counter module and objects are moved between the two modules.
How does it work ?
Each time an object passes between the two modules, the seven segment displays show increment in numbers from 0 to 999.
If you are using the laser light, direct it towards the photoresistor and the pointed light should hit the photoresistor so that whenever the light is block, the counter starts counting.
1 digit 2.3 " common cathode display tester- UP counter
Test your 2.3" common cathode 7-segment display
This is a simple tester or driver for 2.3″ common cathode seven segment displays. Simply place your display on the board and solder it. You can instantly use the top tactile switch to test the count and it counts well without any false triggering.
Use as a 2.3″ common cathode seven segment display tester.
It works as an UP counter. You can instantly test the up count of the display.
Works with Arduino or NE555 or whatever that gives pulse.
You can concatenate as many drivers as you want.
It works with object counter trigger module. You can build a photoresistor or infrared based object counter also.
CD4029 based up and down counter module for Arduino users
CD4029 is a presettable binary/decade up and down counter chip. Scoreduino app has a feature to control the CD4029 based up and down counter module. You can connect the CD4029 counter module to Arduino and send up and down signals via Bluetooth. It is the most basic and simplest up and down counter for Arduino enthusiasts.
It works with Arduino, NE555, and even a flashing LED.
How to connect to Arduino? Fritzing diagram and images.