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https://github.com/kinghowler/nodemcu-attendance-system
https://github.com/kinghowler/nodemcu-attendance-system
Last synced: about 2 months ago
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- Host: GitHub
- URL: https://github.com/kinghowler/nodemcu-attendance-system
- Owner: KingHowler
- License: mit
- Created: 2024-09-04T16:37:00.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2024-09-12T19:19:52.000Z (4 months ago)
- Last Synced: 2024-09-13T09:02:54.690Z (4 months ago)
- Language: C++
- Size: 9.77 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
# NodeMCU based Attendance System
## Arduino Program
```mermaid
flowchart TD
A(["Start"]) --> B["Connect to Internet"]
B --> C["Start MFRC522 module"]
C --> D["Check for Card"]
D --> E{"Card Detected?"}
E -- Yes --> F["Read UID"]
E -- No --> D
F --> G[["Mark as Present"]]
G --> H["Check Reply from 'Mark as Present'"]
H --> I["Display Indicator"]
I --> J["Reset Indicator"]
J -- Available for next read --> D
style A stroke:#2962FF
style B stroke:#2962FF
style C stroke:#2962FF
style D stroke:#2962FF
style E stroke:#2962FF
style F stroke:#2962FF
style G stroke:#2962FF
style H stroke:#2962FF
style I stroke:#2962FF
style J stroke:#2962FF
```
```mermaid
flowchart TD
subgraph A["Mark as Present"]
B["Connect to host"]
C["Open PHP file with Parameters"]
D["Store Reply"]
E["Close Connection to host"]
F["Return Reply"]
end
B --> C
C --> D
D --> E
E --> F
style A stroke:#2962FF
style B stroke:#2962FF
style C stroke:#2962FF
style D stroke:#2962FF
style E stroke:#2962FF
style F stroke:#2962FF
```
## PHP / Server Side Code
```mermaid
flowchart TD
A["Connect to Database"] --> B["Get Parameters"]
B --> C["What is value of $mode"]
C -- mark-attendance --> D["Recognize Card"]
C -- new-card --> G["Recognize Card"]
G -- Recognized --> Z["Exit"]
D -- Not Recognized --> Z
G -- Not Recognized --> H["Register"]
D -- Recognized --> E["Check if already present"]
E -- Not Present --> F["Mark as Present"]
E -- Already Present --> Z
H --> Z
F --> Z
style A stroke:#2962FF
style B stroke:#2962FF
style C stroke:#2962FF
style D stroke:#2962FF
style E stroke:#2962FF
style F stroke:#2962FF
style G stroke:#2962FF
style H stroke:#2962FF
style Z stroke:#2962FF
```