TFT based advanced data logger with graphics display and auto storing capability for Atmospheric pressure and Temperature.

Description

The kit TFT-based advance data logger, the data logger is a device that records measurements over time. The measurements could be any physical variable like temperature, pressure, voltage, humidity, etc. This project describes how to build a mini logger that records surrounding temperature values. It has the following features; it continuously reads the atmospheric pressure and temperature. There is a real-time clock for timing information. The TFT-based display is for the time display and data display.

In the kit TFT-based advance data logger the pressure and temperature work on I2C communication. The real-time IC also supports the same protocol; hence a single I2C bus is shared among these two devices. TFT works on SPI communication. Here we have used the hardware-based SPI for fast display on the screen. I2C is also hardware-based. All the communications are controlled by the AVR microcontroller. A power supply unit is there which is having a rectifier, filter and regulator. The rating is 12V 1A for the power supply. The whole system can be upgraded in the future such that sends the data to the PC. Also, a memory element like an SD card can be used to save the data over a period of time.