TYPE 3- ESP32 based 4 Digits Digital Objects Counter with Relay, 4 Channels RF remote control, WiFi Support

This product is NOT for sale in AUSTRALIA. Australians can purchase counters without a relay.

Overview

This ESP32-powered 4-digit digital counter is a smart and versatile device designed to count objects automatically or manually. It can display values from 0 to 9999 using a bright, colorful LED matrix display. The system uses a photoresistor–laser beam mechanism to detect passing objects and increment the count with precision.

With built-in WiFi, you can access a browser-based control panel directly from your phone or computer—no app installation required. Simply connect to the ESP32’s WiFi access point and manage the counter wirelessly.

Common Features:

• Automatic Object Counting:
  A laser beam constantly shines on the photoresistor. When the beam is interrupted (object passes through), the counter increases by one. Users can restrict photoresistor from counting via web interface.

• Manual Controls and RF remote control
  Three onboard buttons let you control the counter easily:

  • UP: Increase count manually

  • DOWN: Decrease count manually

  • RESET: Reset the counter to zero

  • Includes RF remote control module
    Supports RF remote control for wireless count up and count down

• WiFi Access & Web Control:

  • Connect to WiFi network: SSID and password details will be given to customers.

  • Open browser and visit http://192.168.4.1

  • Access an intuitive web interface to:

    • Increment or decrement the count remotely

    • Set a specific count value, for example, 453

    • Automatically turn ON a relay once the set count value is reached. Connect your device to the relay in normally CLOSED mode and when the count value is reached the relay will be turned ON and your connected device will be turned OFF.

• • • Stop further counting after reaching the target value

    • Enable or restrict photoresistor-based counting when required

    • Change display color

    • Integrated relay output for automation or external device control

• Customizable Display Colors:
  Choose from five vivid colors — Yellow, Red, White, Green, and Blue — for the 4-digit display. Use web interface for changing colors. Colors are saved even power is turned off.

• Data Memory (Power Loss Protection):
  The ESP32 automatically remembers the last count and color settings, even after power disconnection.

• Display Options:
  Can be used with two display sizes,

  • P3 Display (3-inch digits)-192mm x 96mm Included

  • P5 Display (5-inch digits)- 320mmx160mm- you can choose to purchase separately
    Both use 64×32 LED matrix panels for clear, high-contrast numbers.

• Power Supply:
  Works with 5V 4A power adapter (not included).

• Plug-and-Play Design:
  No assembly required. Comes fully pre-wired and tested. (Enclosure not included.)

• Includes Laser Module:
  High-quality laser emitter included for reliable photoresistor detection.

• Communication with a separate TM1637 Mini Objects Counter:

• Includes a dedicated HC-12 communication header

• Supports connection to a TM1637 mini objects counter via HC-12 wireless module

• Mini counter can be placed anywhere within up to 200 meters range

• Counted values from the mini counter are wirelessly transmitted to the main unit

• Main unit displays the received count on a 64×32 dot matrix display

• Ideal for distributed counting systems, long-distance counting, and automation setups

Applications & Uses

This counter is suitable for a wide range of industrial, commercial, and hobby projects, including:

• Factory or workshop production lines – count items as they pass on a conveyor.

• People counters – monitor entries or exits through a doorway.

• Event or game scoring systems – track scores or hits.

• DIY electronics projects – educational or experimental use.

• Inventory or packaging lines – automatic quantity tracking.

• Exhibition and display counters – show live object or visitor counts.

General Specifications

Package includes:

• 1 x Objects Counter Module with relay and enclosure
• 1 x Laser Module
• 1 x P3 INDOOR 64×32 dot matrix display- 192mm x 96mm display- DEFAULT

5V 4A power supply is not included.

What's not included:

You need to purchase these separately:

1. 5V 4A power supply(essential)
2. RF remote control(Optional)
   
3.  P5 INDOOR 64×32 dot matrix display- 320mmx160mm display- OPTIONAL
4. 433Mhz RF Remote Control
5. TM1637 mini objects counter and HC-12 receiver and transmitter set