| # Button Pullup | |
| ## Project Description | |
| This is a simple ESP32 project that prints whether the button is pressed. | |
| ## Hardware Components | |
| - ESP32 DevKit v1 | |
| - 10kΩ resistor | |
| - Push Button | |
| ## Circuit Description | |
| Circuit is designed to use a pull-up resistor. When the button is not pressed, the pin4 pin is connected to 3V3 through a 10kΩ resistor. When the button is pressed, the pin4 pin is connected to gnd2. | |
| ## Expected Behavior | |
| When the ESP32 powers up, it should: | |
| 1. Initialize serial communication | |
| 2. Configure the specified button pin as INPUT | |
| 3. Continuously check the button value, and print "Button pressed" if the value is LOW, or print "Button not pressed" if the value is HIGH. | |
| ## Success Criteria | |
| The test is successful when: | |
| 1. "Button pressed" is printed when the button is pressed | |
| 2. "Button not pressed" is printed when the button is not pressed | |
| ## Notes for Implementation | |
| - Use Arduino.h library for arduino core. | |
| - The pin number used should match the circuit diagram | |
| - When the button is not pressed, pin1.l is connected to pin1.r and pin2.l is connected to pin2.r. When the button is pressed, all the pins are connected together. | |
| ## Variants | |
| This project may have different variants with the pushbutton connected to different pins. | |
| ## Attributes | |
| - To use 10kΩ resistor, set the property name "value" to "10000 ohm". |