Time utilities for Arduino UNO

Device features:

Device control

Press the E button to switch utilities.

Stopwatch:
- A - start / stop / reset
Timer and Watch:
- A - start / stop
- B - set seconds
- С - set minutes
- D - set hours

Circuit diagram of the device made in Proteus 8:

Open the source.ino file in Arduino IDE.

Select Arduino UNO in the board selection menu.

Open the Sketch menu in the top panel > Export Compiled Binary.

The firmware file will be compiled to source/build/source.ino.hex.

Open the TimeUtilitiesScheme.pdsprj file in Proteus.

Double-click on the Arduino board.

Click the Program File button.

Select the file source/build/source.ino.hex.

Run the simulation.