WIFI Print Start/Stop Sensor - Botcan3D

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There are two parts of the system (both designed for Ender 3/ Ender 3 Pro):- Sensor Box to push-fit on X axis stepper motor- Magnet Case Frame to push-fit on hotend box.I also put a slider/handle on the magnet case frame which is also very useful to move the hotend box during manual bed leveling movements (of course, when the steppers are disabled).HOW IT WORKS:When you turn on your printer (Ender 3/ Ender 3 Pro and may be some others), the hotend is at Home position. In this position the magnet on the Hotend Frame is close enough to the sensor which is mounted on the X stepper motor. So, the sensor is not activated. However, when the printing starts, as the Hotend will depart from its home position, the sensor will get activated and send a notificaiton to your mobile, wherever you are.Same for print end; when the printing finishes, the Hotend box will return to its Home position once again, activating the sensor box which will again send a notification to your mobile.The frame length is extremely important to keep the proper distance between the sensor and the corresponding magnet. If it's too long, the hotend frame will hit and force pushing the sensor box which may harm your printer. On the other hand, if the frame length is too short, the magnet will be far away from the sensor and cannot activate it even at Home position. In this respect, 80mm frame length (end to end) is very accurate.In order to avoid using supports, I have designed the sensor box with 45 deg (or…