Smart Ironing Device for Ultimate Protection

The Smart Ironing Device operates as a wireless, motion-triggered safety automation system divided into a mobile transmitter and a stationary receiver. The transmitter unit is mounted directly onto the iron and is powered by a rechargeable 18650 3.7V lithium-ion battery, managed safely via a TP4056 module and controlled via an SPST power switch. At the heart of this transmitter is an ESP32 development board paired with an MPU6050 3-axis gyroscope and accelerometer. When the iron is in active use, the MPU6050 detects continuous motion and spatial orientation changes, communicating these movements via I2C to the ESP32. The transmitter wirelessly broadcasts this activity status. Meanwhile, the receiver unit stays plugged into a wall power supply using an AC to DC 5V power supply to run its own ESP32 development board. When the receiver detects an extended absence of movement data from the transmitter, its ESP32 triggers a switching circuit. This circuit uses a 1k resistor and a BC547 NPN transistor to safely amplify the control signal, driving a heavy-duty RAYEX-L90 30A T-type relay protected by 1N4007 diodes against inductive kickback. The relay acts as an electronic switch cutting off or supplying high-voltage power through its screw terminal blocks, thereby deactivating the iron before it can scorch garments or cause a fire.