cptplastic/Arduino-Trigger
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
No description
2 commits 2 branches 0 tags 54 KiB
  • C++ 100%
Find a file
Exact
Jason Johnson 3a7033cc47 Implements button-controlled power outputs 
Implements a system to control two power outputs with a button.
The outputs run while the button is held (up to a maximum duration),
followed by a pause before re-arming. The system includes a status LED
for ready/busy indication and provides serial monitor output for
debugging.
2025-07-20 23:38:08 -05:00
README.md Implements button-controlled power outputs 2025-07-20 23:38:08 -05:00
SprayMotor-NoStopOnButtonRel.ino Implements button-controlled power outputs 2025-07-20 23:38:08 -05:00

README.md

Arduino Power Control with Button Trigger

Controls two power outputs using a button with the following behavior:

  • When the button is pressed and held, both power outputs run for a maximum of 3 seconds
  • If the button is released before 3 seconds, the power outputs stop immediately
  • After the power outputs stop, there is a 7-second pause before the power outputs can be started again
  • The built-in LED indicates when the system is ready (LED on) or busy (LED off)

Pin Configuration

Component Arduino Pin Notes
Button Pin 2 Active LOW (pressed = LOW, released = HIGH)
Power 1 Pin 4 Digital output
Power 2 Pin 8 Digital output
Status LED LED_BUILTIN (Pin 13) Built-in LED for ready indication

Wiring Setup

Button Connection

  • Connect one terminal of the button to Pin 2
  • Connect the other terminal to GND
  • The internal pull-up resistor is enabled in code, so no external resistor is needed

Power Output Connections

  • Power 1: Connect to Pin 4 (through appropriate driver circuit)
  • Power 2: Connect to Pin 8 (through appropriate driver circuit)

Important: Do not connect high-power loads directly to Arduino pins. Use appropriate driver circuits (like relays, MOSFETs, or transistors) to handle power requirements for your specific application.

Status LED

  • Uses the built-in LED on Pin 13 (LED_BUILTIN)
  • LED ON = System ready/idle
  • LED OFF = Power outputs running (busy)

Operation

  1. Ready State: LED is ON, system waits for button press
  2. Button Press: Power outputs start, LED turns OFF
  3. Running: Power runs while button is held (max 3 seconds)
  4. Stop: Power stops when button is released OR after 3 seconds
  5. Pause: 7-second pause with LED OFF before returning to ready state

Configuration

You can modify these constants in the code:

const uint32_t K_MAXIMUM_DURATION = 3000ul;  // Maximum power run time (ms)
const uint32_t K_PAUSE_DURATION = 7000ul;    // Pause duration after stop (ms)
const uint32_t K_BTN_READ_TIME = 20ul;       // Button debounce time (ms)

Serial Monitor

The code outputs status messages at 19200 baud:

  • "Button pressed"
  • "Button released"
  • "Power running"
  • "Power halted"
  • "Armed"