https://github.com/tharindu714/charging-timer-unit-simple-sketch
A simple Arduino-based timer that indicates charge status via an LED and enforces a cooldown period.
https://github.com/tharindu714/charging-timer-unit-simple-sketch
arduino cpp iot
Last synced: 2 months ago
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A simple Arduino-based timer that indicates charge status via an LED and enforces a cooldown period.
- Host: GitHub
- URL: https://github.com/tharindu714/charging-timer-unit-simple-sketch
- Owner: Tharindu714
- Created: 2025-06-12T08:49:43.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2025-06-12T09:05:20.000Z (about 1 year ago)
- Last Synced: 2025-06-12T10:23:56.009Z (about 1 year ago)
- Topics: arduino, cpp, iot
- Language: C++
- Homepage:
- Size: 2.93 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
## **README.md for Timer Project**
# ⏲️ Timer Charging Unit
> A simple Arduino-based timer that indicates charge status via an LED and enforces a cooldown period.
---
## 📖 Description
When powered on, the **LED** glows continuously for **1 minute** to indicate startup.
After this initial period, the unit enters a **1-hour charging** cycle; during this time the LED remains on.
Once charging is complete, the LED turns off automatically, and the system locks out for **24 hours**, during which the LED remains off and charging is disabled.
---
## 📂 Project Files
```
Timer_Project/
├── Timer.ino # Arduino sketch implementing LED timing logic
└── README.md # This documentation file
```
---
## ⚙️ Hardware Setup
* **Arduino UNO** (or compatible board)
* **LED** with appropriate resistor
* **Power supply** (e.g., USB or battery pack)
---
## 🚀 Installation & Usage
1. **Open** `Timer.ino` in the Arduino IDE.
2. **Connect** your Arduino board via USB.
3. **Select** the correct board and port under **Tools**.
4. **Upload** the sketch.
5. **Power cycle** the unit to start the timing sequence.
---
## 📷 Circuit Diagram
> *Insert your circuit schematic here*
---
## 🔧 Configuration
Within `Timer.ino`, you can adjust the timing constants near the top of the file:
```cpp
const unsigned long STARTUP_DELAY = 60000UL; // 1 minute in milliseconds
const unsigned long CHARGE_DURATION = 3600000UL; // 1 hour in milliseconds
const unsigned long COOLDOWN_PERIOD = 86400000UL; // 24 hours in milliseconds
const int LED_PIN = 13; // On-board LED pin
```
Modify these values to change durations or LED pin assignments.
---
## 🛠️ How It Works
1. **Power On** → waits `STARTUP_DELAY`, LED on
2. **Charging Phase** → runs for `CHARGE_DURATION`, LED on
3. **Cooldown Phase** → runs for `COOLDOWN_PERIOD`, LED off
4. **Cycle Reset** → repeats from step 1 after cooldown
---
## 📜 License
MIT © 2025 Tharindu Chanaka
---
> Built with Arduino and 💡 by \Tharindu Chanaka