LED Pixel Clock (Clock, alarms, temperature, humidity, atmospheric pressure, and remote monitoring)

thingiverse

The LED Pixel Clock is a four-digit display that showcases precise time, thanks to its synchronization with NTP servers. This device uses 30 WS2811 addressable LEDs (8 mm) arranged in a 7-segment format and operates on an ESP8266 microcontroller and real-time clock DS3231 (optional). The BME280 or DHT22 sensor provides accurate measurements of indoor temperature, humidity, and barometric pressure. Features include precise time synchronization with NTP servers, indoor climate measurement, data transmission via MQTT protocol or Thingspeak.com server, no physical buttons for control, high display brightness, seven color options, brightness adjustment, two alarm clocks, firmware update via Wi-Fi, information display in three languages (English, Russian, Bulgarian), and the option to install alternative Open Source firmware. The device is powered by USB and features hackable open-source hardware and firmware. Specifications include a Tensilica L106 32-bit processor (ESP8266) CPU, WiFi 802.11 b/g/n connectivity, UART peripherals, WS2811 addressable LEDs, BME280 sensor (temperature, humidity, barometric pressure), or DHT22 (temperature and humidity), UART pins, a button, three slots for I2C sensors, and a buzzer. Required parts include the Wemos D1 Mini, RGB LED with WS2811 8mm, BME280 Digital Sensor (Temperature, Humidity, Barometric Pressure) 5V, TTP223B digital touch capacitive sensor, DS3231 AT24C32 IIC Module Precision Clock, and an Active Buzzer. The LED Pixel Clock can provide remote monitoring of your home or office by transmitting data from embedded sensors via MQTT or HTTP protocols. This data can be received on your smartphone and PC using MQTT-clients or transmitted to the popular monitoring service Thingspeak.com for graphical output. All clock management is performed using a web browser, with the device serving a hotspot called LW-Clock upon first power-up. Within this hotspot, you can manually override time and date, set color, set timecodes of messages output, and update software. For Wi-Fi network connection, input its SSID and password; after successful connection, LW-Clock will begin to receive and transmit information over the Internet using NTP servers for accurate time. To transmit temperature, humidity, and barometric pressure data, use the MQTT server at https://www.cloudmqtt.com/ and the server at https://thingspeak.com. The control center of the device is the ESP8266 microcontroller, which coordinates Wi-Fi, display, real-time clock (via I2C), tap sensor, and buzzer to run everything smoothly. Arbitrary code can be uploaded from your choice of development environment using the same micro USB cable. A power supply with 5V at a capacity of 2 A or more is required for operation. The enclosure's 3D model is available at https://a360.co/2QVDo4q.