Circuit Documentation
Summary of the Circuit
This circuit is designed to interface with a Raspberry Pi 4B to control three LEDs of different colors: yellow, red, and green. Each LED is connected to a 3.3V power supply through a 200 Ohm resistor to limit the current. The cathodes of all LEDs are tied together and connected to the 3.3V pin on the Raspberry Pi, while the anodes are connected to ground through their respective resistors. This configuration ensures that the LEDs are turned on when the Raspberry Pi is powered up.
Component List
Raspberry Pi 4B
- Description: A powerful microcomputer with multiple GPIO pins.
- Pins: 3V3, 5V, multiple GPIOs, GND, and others.
- Purpose: Acts as the central controller for the circuit.
LED: Two Pin (yellow)
- Description: A yellow LED with two pins: anode and cathode.
- Purpose: Provides yellow light indication when powered.
LED: Two Pin (red)
- Description: A red LED with two pins: anode and cathode.
- Purpose: Provides red light indication when powered.
LED: Two Pin (green)
- Description: A green LED with two pins: anode and cathode.
- Purpose: Provides green light indication when powered.
Resistor (200 Ohms)
- Description: A resistor with a resistance of 200 Ohms.
- Purpose: Limits the current flowing through the LEDs to prevent damage.
Wiring Details
Raspberry Pi 4B
- 3V3: Connected to the cathodes of the yellow, red, and green LEDs.
LED: Two Pin (yellow)
- Cathode: Connected to the 3V3 pin of the Raspberry Pi.
- Anode: Connected to one end of a 200 Ohm resistor.
LED: Two Pin (red)
- Cathode: Connected to the 3V3 pin of the Raspberry Pi.
- Anode: Connected to one end of a 200 Ohm resistor.
LED: Two Pin (green)
- Cathode: Connected to the 3V3 pin of the Raspberry Pi.
- Anode: Connected to one end of a 200 Ohm resistor.
Resistor (200 Ohms)
- One end: Connected to the anode of the yellow LED.
- Other end: Connected to the GND pin of the Raspberry Pi.
Resistor (200 Ohms)
- One end: Connected to the anode of the red LED.
- Other end: Connected to the GND pin of the Raspberry Pi.
Resistor (200 Ohms)
- One end: Connected to the anode of the green LED.
- Other end: Connected to the GND pin of the Raspberry Pi.
Documented Code
There is no code provided for the microcontrollers in this circuit. The Raspberry Pi 4B can be programmed using various programming languages and tools, but specific code for controlling the LEDs in this circuit has not been included in the input.