Ender-3 Additional Sensors and Voltage/Current Monitoring
thingiverse
This is a work-in-progress, more detailed description to follow. This mod for the Ender-3 (and other similar 3d printers) allows real-time monitoring of voltage and current, power, and energy used. It also allows adding additional sensors that will trigger a 24v relay to remove power from the printer. This can be used for auto power-off and even a filament runout sensor that works with the stock firmware! (since it will trigger the resume-after-power-loss function) **Requirements:** * PZEM-031 Voltage/Current/Power/Energy Meter (can be found at banggood.com) * 24v relay for in-car usage * Rotary on/off switch (I used one from "Hqrp") * LED and 1200 ohm dropping resistor (optional, but recommended when using the Hqrp switch) * Breadboard, some wires, and three 2-pin connectors with 2.54mm contact spacing * Closing micro switches * Hammer head nut + screw * Soldering skills
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