arduino tft display clock pricelist

Time is a critical element of our existence that will never get old, and with technology, we can find better and more intuitive ways to measure it. In one of our past tutorials, we looked at how the DS3231 real time clock module can be used with Arduino to display time on a 16×2 LCD display. Today, we will build an upgrade to that project using an Arduino Due, the DS3231 RTC module and a 3.2″colour TFT display in place of the 16×2 LCD display used in the previous project.

At the heart of today’s project is the DS3231 real time clock module which we will use to obtain the current time, date and temperature of the environment. The DS3231 real time clock module is one of the most popular real-time clock chips among makers and DIY enthusiasts. It is a low-cost, highly accurate, I2Cbased real-time clock (RTC) with a temperature-compensated crystal oscillator (TCXO) and crystal integrated into it.  The module integrates a coin cell battery input which helps it retain date and time even when the main power to the device is interrupted. It maintains seconds, minutes, hours, day, date, month, and year information, automatically adjusting the date for months with fewer than 31 days, including corrections for leap year. It can be set to operate either in the 24-hour or 12-hour format with an active-low AM/PM indicator. It has been used in several projects on this website mostly, due to its accuracy, and its low power requirements which help it keep time accurately, for a longer period of time compared to other real-time clocks (RTC) modules.

Another key part/component that we will use in today’s tutorial is the Arduino Due. One of the important things, when designing electronic systems that have displays is ensuring, that there is no flicker or lag when updating information on the screen and one of the best ways to ensure that, is to use a fast enough micro-controller. Putting this into consideration, for this project, we will use the very fast Arduino Due board. The Arduino Due has one of the fastest CPU in the Arduino family. The Due runs on an 84MHz CPU compared to the 16MHz CPU speed of the Arduino UNO, and as such, it is able to update the screen without any visible flickering.

The most important update to the previous project, however, is the 3.2″color LCD display being used. The display gives us the ability to create a better, bigger and colourful user interface for our clock at a cheap price as it costs about 7$ on banggood.

The goal for this project is to build a real-time clock with a user-friendly interface capable of displaying (without lag or flickering) the current time, date, temperature including the minimum and maximum temperature recorded in a particular environment over time.

The 3.2″ TFT, like most other TFT displays, comes as a shield which can be easily mounted on the Arduino Due. This, however, makes it difficult to access the IOs of the Arduino after the display has been mounted, as it tends to cover the front face of the board. To solve this, so that the DS3231 module can be connected, male headers are used (after bending them as shown in the picture below) to connect the RTC module to the Arduino.

To easily write the code for this project, we will use two libraries: the Bodmer TFT HX8537  library for the TFT display and the Sodaq DS3231 library to easily interface with the DS3231 module. Both libraries can be downloaded via the links attached to their names above. The Bodmer library is a version of the UTFT library specially modified for the Arduino Due as this particular display is incompatible with the UTFT library.

Next is the void setup function. We initiate communication with the RTC module and Initialize the display, setting our preferred orientation for the display and print the UI to the display.

With this done, we move to the void loop function. Under this function, we write the code to update all the parameters (after specific intervals) on the display including the min temperature, the max temperature, time and the date.

That’s it for this tutorial guys, there are several useful projects that can be built using this tutorial as a foundation. You could decide to add a buzzer to the project to create an alarm clock or make a to-do list based project, all out of this.

Above the group head there is a display that allows baristas to monitor parameters such as brewing time and weight of the cup. This combined with Gravitech gives baristas the highest level of consistency and control over the coffee brewing process giving maximum precision.

The VA388 “talks” to the barista and shares all the information provided by the T3 and gravimetric systems. The TFT display gives the barista all data in real time to offer the customer the best espresso. The display for each group shows the barista the temperatures of the steam boilers, the coffee and the group, the delivery time and the amount of liquid in the cup.

When you are using DS1302, DS1307 or DS3231 RTC in your real time clock project, You may have observed it’s library works on 24 hours format clock. If you are like me who don’t like to see clock in 24 hour format, this tutorial is for you. we will learn how to set 12 hour clock in RTC (Real Time Clock) using DS1302 with TFT Display. It is simple to convert from 24 hour format to 12 hour format clock by using any of DS1302, DS1307 or DS3231 RTC. In short we are subtracting 12 hours from 24 hours. So let’s get started.

Download library for Real Time Clock library from Rinky-Dink Electronics  OR you can download it from here because library may change by the time or it may not work.