Adjusting clock with thermometer using DS3231 on 1.8" ST7735 display

   I made a clock with manual adjust for data and hour without RTC library, just use subroutines.

   For 1.8"display with ST7735 driver I use TFT_ST7735 library adapted by Bodmer after Adafruit library.
   I use next schematic:

with TFT_DigitalClock_RTC1c.ino sketch (in sketch you will find links with original info about some soubroutines).

   If you push MENU button, enter in mode to adjust hours, then minutes, day of week, years, mounth, day, after that Arduino send data to DS3231 to store and after that clock will work normally, see in adjuting clock with thermometer using DS3231 on 1.8" ST7735 display movie:

Bibliography:
- https://github.com/Bodmer/TFT_ST7735
- http://andydoz.blogspot.ro/2014_08_01_archive.html
- http://www.goodliffe.org.uk/arduino/rtc_ds3231.php
- http://forum.arduino.cc/index.php?topic=398891.0
- http://nicuflorica.blogspot.ro/2016/11/afisaj-tft-de-18-cu-driver-st7735b-3.html

1.8" TFT display with ST7735B

   I buy an small 1.8" TFT display with ST7735B driver and I try to connect directly to Arduino Uno board as I see on net... but result was not good... display is almost white

and just disconnect accidentaly the GND I can see something...

   So, I search on Arduino forums and on net (article INSTRUCTABLES: Arduino TFT display and font library ) and I found a solution like Nokia 5110 monochrome display .. I put 1k resistor on each data pins to Arduino to display:

and I tested more Arduino library for this display with ST7735 driver (from Adafruit, TFT library, ucglib library, etc) and I made  move to see .. movie is named ST7735B display with Arduino board

NOTE: Original article is in roumanian language, see Afisaj TFT de 1,8" cu driver ST7735B !!!