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Lcd ds3231 arduino uno pinout install#
Lcd ds3231 arduino uno pinout code#
Lcd ds3231 arduino uno pinout download#

Pin 3 to GND through a 1k ohm resistor and to 5v through a 10k ohm resistor.

Once you are able to connect it to your breadboard, it’s time to wire it all up as per the illustration and instructions below: The first thing you will need to do, more than likely, is solder the headers to the JHD162A module, as typically they do not come ready soldered together.

A breadboard and a bunch of jumper cables.

The checklist of things we’ll need for this are: Note: Although this guide has been written with the JHD162A in mind, any LCD display controller that is compatible with the Hitachi HD44780 interface will work which is the majority of small display controllers like this. The JHD162A display controller is a monochrome LCD module which you can find bundled with various Arduino starter kits or on their own usually in the price range of around $10. If ((now - prev > interval) & (Serial.Using a JHD162A LCD Screen with an Arduino Uno The loop function displays the time and temperature on the LCD after querying the DS3231 module. The next thing after this is to move into the loop function. The device does not come with time preset but after setting it once, the action will no longer be needed.

You can change this to match your current date when setting the time. The time is set using this line under the setup section.

Lcd ds3231 arduino uno pinout code#

The first thing we will be doing with the code is setting the time of the ds3231. The code is a modified version of the example found in the arduino library. The next thing is to declare the LCD pins and move into the setup function The Libraries include wire.h to enable I2C communication, Ds3231.h and rtc_ds3231.h to enable the RTC to work and the Liquidcrystal.h which makes it easy for us to work with the LCD. To do a break down of the code, the first thing we do in the code is to include the libraries that carry some of the dependencies needed for our code to run. Launch the Arduino IDE and copy in the Attached code.

Lcd ds3231 arduino uno pinout install#

Rename the library to “RTC” and install it, by copying and pasting into the Arduino libraries folder. The library can be found here and is also attached at the end of this project.

Lcd ds3231 arduino uno pinout download#

The first thing we need to do is to download the arduino library for the ds3231 RTC. With the connections done, lets jump into writing the code. Pin 3 - Middle pin of the Potentiometer(check Schematics) If not then you can connect it as described in the schematics and illustrated below. If you are using the screen and keypad shield whose link is attached above, all you will just need to do is plug it in to your arduino as shown below. Next connection is between the LCD and the Arduino. Since the DS3231 is going to communicate via I2C then its I2C pins will be connected to the arduino’s I2C (SDA and SCL) pins which on the mega are located on pin A0 and A1 or pin 20 (SDA) and 21 (SCL) of the arduino mega. Potentiometer (if not using an LCD shield)Ĭonnect all components as shown in the Fritzing schematics below, kindly note the LCD connection will not be needed if using the shield. They can be purchased via the links attached.ĥ. The following components will be needed for this tutorial.

The collected temperature and clock data is then displayed on the 16×2 LCD via the Arduino. The module also comes with a quite accurate temperature sensor which we will be using to get temperature readings. This module has the ability to communicate via I2C or SPI but for this tutorial we will be using the I2C mode for communications between our arduino and the DS3231. The DS3231 is a very low power RTC chip, it has the ability to keep time with incredible accuracy such that even after power has been disconnected from your product, it can run for years on a connected coin cell battery. One of the most important things everyone wants to keep track of daily is, time and with easy to use platforms like the arduino it is very easy to create your own timepiece and in the case of this tutorial add a temperature monitor to it.įor this tutorial, we will be creating a real-time clock and temperature monitor using the simple and easy to use DS3231 module.