first commit
This commit is contained in:
Lucca Pirovano
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#!/usr/bin/env python3
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from flask import Flask, render_template, jsonify
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import serial
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import serial.tools.list_ports
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import threading
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import time
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app = Flask(__name__)
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# --- Auto-find Arduino ---
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def find_arduino():
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for p in serial.tools.list_ports.comports():
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if 'Arduino' in p.description or 'ACM' in p.device or 'USB' in p.device:
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return p.device
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return '/dev/ttyACM0'
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PORT = find_arduino()
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BAUD = 115200
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# Global serial object
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ser = None
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serial_lock = threading.Lock()
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def init_serial():
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global ser
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try:
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ser = serial.Serial(PORT, BAUD, timeout=0)
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time.sleep(2) # wait for Arduino reset
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print(f"Connected to {PORT}")
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except Exception as e:
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print(f"Serial error: {e}")
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ser = None
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init_serial()
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# --- Send command safely ---
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def send_command(cmd):
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with serial_lock:
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if ser and ser.is_open:
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try:
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ser.write(cmd.encode())
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ser.flush()
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except:
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print("Serial write failed")
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else:
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print("Serial not open")
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# --- Background reader (optional: show live feedback) ---
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def serial_reader():
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while True:
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if ser and ser.in_waiting:
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line = ser.readline().decode(errors='ignore').strip()
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if line:
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print(f"Arduino: {line}")
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time.sleep(0.01)
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threading.Thread(target=serial_reader, daemon=True).start()
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# --- Routes ---
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@app.route('/')
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def index():
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return render_template('index.html')
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@app.route('/cmd/<key>')
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def command(key):
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if len(key) == 1 and key in '0123456789fFsS':
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send_command(key)
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return jsonify(status="ok", key=key)
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return jsonify(status="invalid"), 400
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if __name__ == '__main__':
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# Allow access from your phone/tablet on same WiFi
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app.run(host='0.0.0.0', port=5000, debug=False)
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@@ -0,0 +1,67 @@
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#!/usr/bin/env python3
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"""
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Ultra-responsive fan control – every key press is sent instantly.
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Uses raw stdin + select() with zero timeout.
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"""
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import serial
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import sys
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import select
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import termios
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import tty
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import serial.tools.list_ports
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# -------------------------------------------------
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# Auto-detect Arduino port
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# -------------------------------------------------
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def find_arduino():
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for p in serial.tools.list_ports.comports():
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if 'Arduino' in p.description or 'ACM' in p.device or 'USB' in p.device:
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return p.device
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return None
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PORT = find_arduino() or '/dev/ttyACM0'
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BAUD = 115200
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# -------------------------------------------------
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def raw_stdin():
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"""Put stdin into raw mode and return old settings."""
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fd = sys.stdin.fileno()
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old = termios.tcgetattr(fd)
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tty.setraw(fd)
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return old
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# -------------------------------------------------
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def main():
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# --- open serial -------------------------------------------------
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try:
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ser = serial.Serial(PORT, BAUD, timeout=0) # non-blocking
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except Exception as e:
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sys.exit(f"Cannot open {PORT}: {e}")
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print(f"Connected to {PORT}")
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print("Keys: 0-9, f=full, s=stop, q=quit (every press is sent immediately)")
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old_term = raw_stdin()
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try:
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while True:
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# ---- non-blocking read from keyboard (0-second timeout) ----
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rlist, _, _ = select.select([sys.stdin], [], [], 0)
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if rlist:
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key = sys.stdin.read(1) # exactly one char
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if key.lower() == 'q':
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print("\nBye!")
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break
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ser.write(key.encode()) # send raw byte
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print(f" → {key}", end='', flush=True)
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# ---- echo any reply from Arduino (non-blocking) ----
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if ser.in_waiting:
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reply = ser.read(ser.in_waiting).decode(errors='ignore')
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print(reply, end='', flush=True)
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finally:
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termios.tcsetattr(sys.stdin.fileno(), termios.TCSADRAIN, old_term)
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ser.close()
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if __name__ == '__main__':
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main()
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@@ -0,0 +1,14 @@
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const int FAN_PIN = 9; // Pin connected to the FAN
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void setup() {
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pinMode(FAN_PIN, OUTPUT); // Set the FAN pin as an output
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}
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void loop() {
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digitalWrite(FAN_PIN, HIGH); // Turn the FAN on
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Serial.print("Fan-High");
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delay(2000); // Wait for 1 second
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digitalWrite(FAN_PIN, LOW); // Turn the FAN off
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Serial.print("Fan-Low");
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delay(2000); // Wait for 1 second
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}
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@@ -0,0 +1,68 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<title>Fan Speed Control</title>
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<style>
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body { font-family: Arial; text-align: center; padding: 2rem; background: #f4f4f4; }
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.btn {
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font-size: 1.5rem; padding: 1rem 1.5rem; margin: 0.5rem;
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background: #007bff; color: white; border: none; border-radius: 8px;
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cursor: pointer; width: 80px;
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}
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.btn:hover { background: #0056b3; }
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.btn.stop { background: #dc3545; }
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.btn.stop:hover { background: #b02a37; }
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.btn.full { background: #28a745; }
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.btn.full:hover { background: #218838; }
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#status { margin-top: 1rem; font-size: 1.2rem; color: #333; }
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.keys { margin-top: 2rem; font-size: 1rem; color: #666; }
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</style>
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</head>
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<body>
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<h1>Fan Speed Control</h1>
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<p>Click buttons or press keys: <strong>0–9, f, s</strong></p>
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<div>
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<button class="btn stop" onclick="send('s')">S<br>Stop</button>
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<button class="btn" onclick="send('1')">1<br>~11%</button>
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<button class="btn" onclick="send('2')">2<br>~20%</button>
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<button class="btn" onclick="send('3')">3<br>~30%</button>
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<button class="btn" onclick="send('4')">4<br>~40%</button>
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<button class="btn" onclick="send('5')">5<br>50%</button>
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<button class="btn" onclick="send('6')">6<br>~60%</button>
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<button class="btn" onclick="send('7')">7<br>~70%</button>
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<button class="btn" onclick="send('8')">8<br>~80%</button>
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<button class="btn" onclick="send('9')">9<br>~90%</button>
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<button class="btn full" onclick="send('f')">F<br>Full</button>
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</div>
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<div id="status">Ready. Press keys or click buttons.</div>
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<div class="keys">Keyboard: 0–9, f = full, s = stop</div>
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<script>
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function send(key) {
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fetch(`/cmd/${key}`)
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.then(r => r.json())
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.then(data => {
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if (data.status === 'ok') {
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document.getElementById('status').textContent = `Sent: ${key.toUpperCase()} → Fan updated`;
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}
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})
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.catch(() => {
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document.getElementById('status').textContent = 'Error: Is Arduino connected?';
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});
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}
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// Keyboard control
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document.addEventListener('keydown', (e) => {
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const k = e.key.toLowerCase();
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if ('0123456789fs'.includes(k)) {
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e.preventDefault();
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send(k);
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}
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});
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</script>
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</body>
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</html>
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