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BigClock — the LED clock you can read across the room
Professional LED Matrix clock system with an RGB 128×32 pixel display based on ESP32-S3, a DS3231 RTC with ±2ppm accuracy and NTP v4 synchronization over WiFi.
- LED Matrix RGB 128×32
- RTC ±2ppm
- NTP v4
- OTA firmware
BigClock BC-ESP32S3-M128X32
Features
BigClock BC-ESP32S3-M128X32
- RGB 128×32 pixel LED Matrix display
- 16-bit color (65,536 colors)
- 4 configurable display modes
- ESP32-S3 dual-core microcontroller
- DS3231 RTC with ±2ppm accuracy
- Dual-band WiFi 802.11 b/g/n
- Adjustable brightness 0-255 levels
- 100W switching power supply (5V/20A)
- Firmware upgradable via OTA
BigClock is an advanced professional clock system based on an ESP32-S3 microcontroller with an RGB 128×32 pixel LED matrix display. It is designed specifically for broadcast applications, television studios and professional environments that demand maximum time accuracy and reliable display.
The system uses a DS3231 Real Time Clock (RTC) with ±2ppm accuracy to keep the exact time even without a network connection, while NTP synchronization ensures millisecond-level accuracy when connected. The integrated web interface allows full configuration of the 4 display modes, color customization and advanced WiFi network management with support for static IP and custom time zones.
What this means for you: the ±2ppm DS3231 RTC keeps the time even if the network goes down, and OTA updates add features without taking the display off the wall. Elettronica Mangione has synchronized TV studios since 1984.
Technical Specifications
BigClock BC-ESP32S3-M128X32
Display
- RGB LED Matrix 128×32 pixel (2×64×32)
- Active display area: 256×64mm
- Color depth: 16-bit (65,536 colors)
- Adjustable brightness: 0-255 levels
- 4 configurable display modes
Hardware
- Microcontroller: ESP32-S3 dual-core
- RTC: DS3231 with ±2ppm accuracy
- Enclosure: Professional PETG (370×71×56mm)
- Mounting distance: 342mm between hole centers
- Weight: 866g
Connectivity
- WiFi 802.11 b/g/n dual-band
- Integrated Access Point for configuration
- NTP v4 protocol
- Static IP configuration support
Power supply
- External switching power supply: 100W (5V/20A)
- Input voltage: 110V-220V AC with IEC connector
- Efficiency: >90% at rated load
- Protections: overvoltage, overcurrent, short circuit, overtemperature
Display Modes
- Layout 0: Standard Mode (HH:MM + seconds + date + indicators)
- Layout 1: Time Only Mode (HH:MM, maximum contrast)
- Layout 2: Time + Seconds Mode (HH:MM + seconds + reduced date)
- Layout 3: Extended Data Mode (all time information)
Software
- Configuration through the web interface
- Automatic daylight saving time synchronization
- Customizable time zone (POSIX)
- Firmware updates via OTA (Over-The-Air)
- Integrated Access Point for initial setup
Installation
- Wall mounting through two upper holes
- Enclosure dimensions optimized for professional installations
- Automatic startup sequence (15-25 seconds total)
- Factory reset through buttons P1 and P2 (4 seconds)
Compliance
- CE, RoHS compliant
- EMC Directive 2014/30/EU
- Low Voltage Directive 2014/35/EU
- Intended for professional use in controlled environments
Frequently asked questions
Frequently Asked Questions (FAQ)
If your question is not here, send it to us directly: the people who design the product will answer.
What is the BigClock?
It is a professional clock system with a 128x32 pixel RGB LED matrix display based on an ESP32-S3 microcontroller, designed for broadcast studios and professional environments.
What time accuracy does it guarantee?
A DS3231 RTC with ±2ppm accuracy keeps the exact time even offline, while NTP v4 synchronization ensures millisecond-level accuracy when the device is connected.
What display features does it have?
It has a 16-bit color RGB display (65,536 colors), 4 configurable display modes and brightness adjustable across 0-255 levels.
How is it configured and powered?
It is configured through an integrated web interface with dual-band WiFi 802.11 b/g/n and OTA-upgradable firmware. It is powered by a 100W switching power supply (5V/20A).
Is it suitable for professional television studios?
Yes. The RGB LED matrix display offers high visibility and strong contrast, with display modes designed for the needs of TV studios and broadcast environments.
Related Products
Other ways to bring the time into the room
Let's talk
Where does the time need to be readable?
Tell us about the room and the reading distance: we help you choose format and configuration before you ask for a quote.