Détection de fumée => mise à l’arrêt de l’imprimante 3D
thingiverse
The smoke detector connected to my Anet A8, so that the 220v power supply is cut off when there's a release of smoke. The basic design: - The smoke detector generates a high signal (2.5v at pin number 7 of the microprocessor). - This signal is reversed (using components like diodes/transistors/condensers/resistors) so that after this signal makes the relay switch to "standby" mode and cuts off the 220V power supply from the printer. - For startup: a pushbutton will short circuit the relay contacts to start up the power supply. - Another pushbutton is integrated into the smoke detector to act as an "OFF" button. (The other solution is to press the test button on the smoke detector to cut off the power, but there's the strident alarm beep so not cool. lol) - The signal transformation part is mounted in the smoke detector, on a vero board - The relay and pushbutton "ON" parts are installed under the Anet power supply. The tests have been conclusive: https://youtu.be/LmlGzvOPnBY
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