Remote Power Down for Printer and Raspberry Pie 3 Model B+

thingiverse

Just another smoke alarm shutdown design. This is the second version of a remote shutdown system that powers off the printer and Raspberry PI remotely, along with an additional input from a smoke detector for enhanced safety features. The smoke alarm input allows the printer to be completely powered down if the smoke detector is triggered, similar to other designs. The circuit is now finalized and has been built and tested successfully. Remote shutdown and smoke detector functions are fully operational. Only one 5VDC supply for the Raspberry PI is needed to control all functions without requiring any code modifications to the Octopi image or python scripts. Additional inputs can be added for more shutdown triggers. See this YouTube video for instructions on how to modify a smoke detector to generate the trigger shutdown signal for the printer: https://youtu.be/uuOYgNMEtpU See this YouTube video for an explanation of the circuit and a demonstration of the system: https://youtu.be/fY2ti5XG_Gk The BOM includes: 1 x PA41EC1100 SWITCH PUSH DPST-NO 16A 125V 1 x PA421C1000-124 SWITCH PUSHBUTTON SPST 16A 125V 1 x G6DN-1A DC5 RELAY GEN PURPOSE SPST 5A 5V 1 x RZF1-1A4-L005 5VDC COIL, STANDARD CONTACTS 1x XSCBD23MB LED BLUE DIFFUSED ICE CUBE T/H 1x XSMOK23MB LED ORANGE DIFFUSED ICE CUBE T/H 1x XSMDK23MB LED RED DIFFUSED ICE CUBE T/H 1x PJ-039A CONN PWR JACK 2X5.5MM SOLDER 1x Qualtek 738W-X201 panel mount receptacle 1x Y.S. TECH BW05115012BH Fan 1x TE Connectivity 6609105-7 PWR ENT MOD RCPT IEC320-C14 PNL 1x Phoenix Contact 1844249 TERM BLOCK HDR 5POS 90DEG 3.5MM 1x TE Connectivity TPB11FGVRA004 SWITCH PUSH SPDT 0.4VA 20V 1x Raspberry RASPBERRY PI 3 MOD B+ BCM2837B0 with Octoprint image loaded. 5x On Semi 1N4001 diodes 1x Rectron W06M Bridge Rectifier 1.5A-600V 6x On Semi BSS123 100V mosfets 1x On Semi 2N3906 1x On Semi 2N3904 1x 475R 1x 886K 2x 22uF 4x 10K 1x 150R 1x 270R 3x 10nF 1x 10uF 1x 5.1V zener 1x SA555D Popcorn resistors can be used, and any type from surface mount to through hole will work.