Arduino Projects Sale! Quick View Add to basket Arduino Projects Motor speed controller using PWM Signals (without feedback mechanism) ₹10,500.00 Original price was: ₹10,500.00.₹7,500.00Current price is: ₹7,500.00. Sale! Quick View Add to basket Arduino Projects GSM based automatic Smoke, Temperature, Humidity and Flame detector with exhaust fan ₹12,500.00 Original price was: ₹12,500.00.₹9,500.00Current price is: ₹9,500.00.