My team consists of four people. This time, the project is about prototyping a calculator using keypad and LCD. The Arduino that used is Arduino Uno. This project began on Feb 23 and ended on Feb 23 (only one day). During project development, as usual, we have some obstacles. The processes will be shown below.
Jessica, Eveline, Alicia, and Asta (from left to right)
Team members
We were testing the keypad first, then the LCD.
Picture 1. Gathering the equipments
We succeeded testing the keypad in one go! yeay!
Picture 2. Testing the keypad
At first, the LCD won't show any letter, but after working hard for about 30 minutes, we succeed to make the LCD showing the word 'hello world!' and counting the time. We were using the LCD that has been joined with potentiometer and shield.
Picture 3. LCD won't work for half an hour
Picture 4. Success in making the LCD work
After that, we tried to combine the LCD and keypad. At first, the result that shown to LCD while the keypad was pressed is wrong. Something's wrong about the circuit. Then we tried to figure it out and succeed.
Picture 5. The display shown was still wrong
Picture 6. We can do it!
After taking a break, we start to code the calculator program and upload it to the arduino, and we tried and tried untill we succeed.
Picture 7. We mark the keypad according to the function we coded
Picture 8. We succeed!
Also, we tested the calculations with different numbers.
Picture 9. We're done!
The testing video will be shown below.
Testing Video
The code link will be told in the description of the testing video. That's it, we're done. Thank you and have a good day guys :)
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