WiFi controlled power strip

thingiverse

Human: I built a DIY WiFi power strip using a 3D printed case, a Sonoff WiFi switch, old outlets & some old extension cords. The total cost for each strip was under $10. Control the unit with Sonoff's mobile app, Alexa, or the onboard switch. WARNING: This project involves voltages that can cause injury or even death. You should not attempt this project if you are not experienced in working with household A/C voltage. WARNING: Do not use a 3-prong outlet unless you will be using a 3-prong plug and wiring the third/ground plug correctly. Circumventing this safety feature could result in injury or even death. NOTICE: The Sonoff module is rated for 10 Amps. I use 2-wire outlets to prevent higher load appliances/tools from being plugged in. I desolder the green connection blocks from the Sonoff and discard them. Next, I solder all connections (four in total) to the thick traces on the underside of the Sonoff board for solid connections. Make sure to get the polarity correct: The outermost (unbroken) solder line on the underside of the board is neutral. This trace should be connected to the wires leading to the 'fat' prong on the plug end and the silver screw on your outlet. Lastly, ensure that lines are knotted on the input side for strain relief, which is a main reason why I use these cases rather than the cheap small boxes provided by Sonoff. These do not allow for proper protection from someone pulling the leads from the box when yanking on the cord. The retainer sits atop the middle post, clamping down on the end of the Sonoff board. You can find the Sonoff modules on Amazon: http://a.co/hxCqS5Y. If you do not have a 3D printer, check out my Etsy page for the WiFi-controlled power strip case: https://www.etsy.com/HowlingCorgiDesign/listing/633002419/wifi-controlled-power-strip-case