Circuit Documentation
Summary
This circuit integrates an Arduino Mega 2560 microcontroller with a Raspberry Pi 4B, an Adafruit DotStar LED Strip, and a resistor. The Arduino Mega 2560 serves as the primary controller, interfacing with the LED strip and the Raspberry Pi 4B. The Raspberry Pi 4B is connected to the Arduino and a resistor, which may be used for pull-up/pull-down or current limiting purposes. The Adafruit DotStar LED Strip is powered by the Arduino and receives data signals from it. The ground connections are shared among all components, establishing a common reference point for the circuit.
Component List
Arduino Mega 2560
- Microcontroller board based on the ATmega2560
- Offers a large number of IO pins, including digital, analog, and PWM capable pins
- Provides various power options, including 3.3V, 5V, and VIN
Adafruit DotStar Strip 60M_B
- An LED strip with individually addressable RGB LEDs
- Requires a 5V power supply and data and clock inputs for controlling the LEDs
Raspberry Pi 4B
- A powerful single-board computer with GPIO capabilities
- Provides a variety of digital IO pins
- Can be powered via 5V pin and has multiple ground pins for interfacing with other components
Resistor
- A passive component with a resistance of 10,000 Ohms
- Typically used for current limiting or as a pull-up/pull-down resistor
Wiring Details
Arduino Mega 2560
- GND connected to the common ground net
- 5V connected to the Adafruit DotStar Strip 60M_B +5V pin
- D30 connected to one end of the Resistor and Raspberry Pi 4B GPIO12
- D6 PWM connected to the Adafruit DotStar Strip 60M_B DI pin
Adafruit DotStar Strip 60M_B
- +5V connected to Arduino Mega 2560 5V
- DI connected to Arduino Mega 2560 D6 PWM
- GND connected to the common ground net
Raspberry Pi 4B
- GND connected to the common ground net
- GPIO12 connected to one end of the Resistor and Arduino Mega 2560 D30
Resistor
- pin1 connected to the common ground net
- pin2 connected to Arduino Mega 2560 D30 and Raspberry Pi 4B GPIO12
Documented Code
Arduino Mega 2560 - sketch.ino
void setup() {
// put your setup code here, to run once:
}
void loop() {
// put your main code here, to run repeatedly:
}
Arduino Mega 2560 - documentation.txt
(No additional documentation provided for this file)
(Note: The code provided for the Arduino Mega 2560 is a template and does not contain any functional code for controlling the circuit. Additional code would be required to initialize the GPIO pins and to control the Adafruit DotStar LED Strip.)