Animated adjusting clock with termomether and hygrometer on 7 segment led display

  After a discution with GeoMar, I decided to made a clock with few animation when change informations on 4 digit 7-segment led display.
   Last test was made be me with LFD080AAG-103 led display, who is with common anode:

    Base schematic is used in some projects

but I put control for brightness (automatic or manual)

or 

and 2 buttons for adjust clock and data

    Sketch multiplexed_scroll_clock3.ino made a clock who has next informations:

- clock, with flash led for beat seconds, about 10 seconds

- temperature, about 2,5 seconds

- relavive humidity for air, about 2,5 seconds

- data (day and mounts), about 2,5 secods

   Brightness can be control in 1024 steps when it used photoresistor or in 2 (minumum or maximum) wirh switch

   If is pushed MENU button, clock enter in adjusting mode, first for hour, so, you will see hour flashing and can be increase value by pushing + button, but if hour is 23 and + button is pushed, value for hour is 00...

   If is pushed again MENU button, clock enter in adjusting mode for minutes, so, you will see minutes flashing and can be increase value by pushing + button, but if minutes are 59 and + button is pushed, value for minutes are 00...

   Next push of MENU button go to year changes, from 2018 to 2049

After that, if push again MENU button, you can change month (1 to 12)

and if push again on MENu button you can change day of month (just day flash)

After a new push of MENU button, system enter in clock mode (normal mode).

    I made a movie for see how clock show the datas and how can be changes clock and data:

Note: Schematic work for small led display with common anode

or common cathode

   Base schematic is similar

   If you want to see in night just clock and temperature, when is day all informations (clock, temperature, relative humidity and data) you must upload sketch multiplexed_scroll_clock3a.ino !

Arduino adjusting clock with dual thermometers

original article in romanian language

   Inspired by Arduino Digital Clock & Thermometer article, I change the schematic for use 2 sensors DS18B20 instead DHT22 (DHT11) sensor:

   Bogdan Arnautu, a blog reader, test the clock:

    With uploaded clock_2ds18b20.ino sketch, Bogdan made clock with 2 thermometers video:

Matrix clock with alarm

   At begin of this year I find article Mini led clock and I test using changed sketch (mini_clock_1a.ino) and schematic

   Also, I made 2 movie:
- clock on matrix led display with MAX7219

- clock on matrix led display with MAX7219 (2)

   Now, I add alarm feature, schematic is now

   Using mini_clock_1_2.ino sketch now you can see data and if alarm is activate by pushing second button (if alarm is deactivate, on screen not apear text with them).
    I made matrix mini clock with alarm movie when you can see how clock work

  

FDS-125 display with Arduino (2)

original article

   In previous article I present you how can conect an FDS-125 display to Arduino and how mase a simple, but "static" clock style

   For made an "dynamic" clock, I use some schematic

  I write in exitting sketch to display name of day in week in 2 language (romanian who is my navitve language and in english). It easy to change in your navive language by writting name of days in one line:

  Is very important to have in same subdyrectory of sketch font75.h file like in this picture:

  So, by uploading FDS125_clock1b.ino sketch, you cand see on display new info, beside date:

   In Arduino clock on FDS-125 display (2) movie you can see on FDS-125 display all info:

   After that, I put an AM2302 (DHT22) sensor for humidity and temperature, like in next picture:

   Newest skertch is FDS125_clock_RTC1c.ino and on display you can see new situations:

like in Arduino clock on FDS-125 display (3) movie:

   Because, DHT sensor is too slow when is reading, I made some changes to see temperature and humidity in same times, also I chege font75.h file to display degree symbol instead ': 

  New sketch is FDS125_clock_RTC1c1.ino and this new style can be see it on Arduino clock on FDS-125 display (4)

Vintage HDLO-2416 display

original article

    I received from an enthusiast of wintage displays, Janos Baricz, a module with 5 HDLO-2416 displays.

   HDLO-2416 display was made by Avago Technologies and has this datasheet.

    After I talk with Janos, him made a module with 5 displays after test one display with sketch from http://gorgusgfx.se/?page_id=62 and IntMatrixDisp library.

    Module has this schematic:

and has different colour for eatch wire...

    First, I test sketch from http://gorgusgfx.se/?page_id=62 with next connexions:

and on displays I can see 5 texts identical:

   After that, I put CE1 at A0, CE2 at A1, CE3 la A2, CE4 at A3 and CE5 at A4.

   I write a sketch for test this schematic:

  Because this schematic need too much wires, I put an 74HC138 chipo like in docs from IntMatrixDisp library to have free more pins from Arduino:

or more detailled:

   Real montage is now

when use HDLO-2416_test5.ino.

   I made five HDLO-2416 display modules with Arduino movie

   Next step was to put an humidity and temperature sensor (DHT22/AM2302) at D12 pin.

 I use sketch from https://github.com/tehniq3/HDLO-2416/blob/master/HDLO2416_DHT1.ino and on display I see few seconds humidity and than temperature:

like in DHT22 temperature and humidity with Arduino on HDLO-2416 display movie:

   Further, I put an DS3231 RTC module at i2c pins and use HDLO2416_DHT_RTC1.ino sketch.

   In movie named RTC clock with DHT weather data on HDLO-2416 display you can see how animate is display (few seconds you can see temperatura, few seconds you can see relative humidity from air, more seconds you can see data and hour):