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# Arduino-Matrix-Clock v1.4
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# Arduino-Matrix-Clock v1.5
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Simple Arduino Clock with LED matrix display 32 x 8 pix. In this sketch is LedControl library (https://github.com/wayoda/LedControl) used.
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Simple Arduino Clock with LED matrix display 32 x 8 pix.
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In this sketch are used some external libraries. You have to download and instal them:
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LED CONTROL: https://github.com/wayoda/LedControl
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IR REMOTE CONTROL: https://github.com/z3t0/Arduino-IRremote
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For more info and discussion see https://www.mylms.cz/arduino-hodiny-s-maticovym-displejem/ You can use forum there. Please write in english.
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See video: https://youtu.be/HDweqN9cDNA
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In version 1.4 you can use clock verticaly and show some short messages (you can use two inputs). If you connect input 10 and/or 11 to GND you can show one of them. You can upgrade text of message only in code, see row around 420 (look for '//show some message or time'). More information in code.
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In v1.5 it's possible to invert display and control clock by a IR remote control. You have to change IR Remote control codes in sketch to your codes. You can use...
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You can control clock by the buttons, Serial port and/or IR remote control.
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Menu:
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- H: Hour
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- r: Font turning 2 (turn all diplay; 00 = off, 01 = on)
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- U: Turn font UpsideDown (00 = off, 01 = on)
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- v: Vertical mode (00 - standard horizontal, 01 - vertical mode)
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- i: Invert display (00 - no invert, 01 - invert display)
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- Strt: Reset second (set to 0) after release the button and show actual time
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You need:
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- Arduino Nano
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- DS3231 module
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- 4x LED matrix with MAX7219 driver (used LedControl library)
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- 2x button
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- 2x button (
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For use external power supply (no USB) you need:
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![alt Arduino Matrix Clock](https://www.mylms.cz/wp-content/uploads/2018/06/arduino-matrix-clock-1.jpg)
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![alt Arduino Matrix Clock - Schematics](https://www.mylms.cz/wp-content/uploads/2018/06/arduino-matrix-clock-9.png)
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![alt Arduino Matrix Clock - Schematics](https://www.mylms.cz/wp-content/uploads/2020/01/arduino-matrix-clock-v1-5.png)

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