I made a bullet hell web-game that the character could be controlled by the joystick and buttons. The HP of the character will be displayed on the seven segment display, the score of the player will be showed on the 4 digit seven-segment display. I will use P5.js to make a bullet hell game and use Firebase to store the player's score of each game.

1. I have first calculated the appropriate resistance for the seven segment display. According to the datasheet, the DC forward current for red LED is 15mA, the voltage drop is 3.0V. With these data, I have calculated the resistance value.

2. Then with the value of resistor, I have drew the schematic for the circuit.

According to the schematic, I have built the circuit with Arduino on the breadboard.