This is an inline power meter i built to monitor and track the usage of my server rack. It was built with an Adafruit Feather HUZZAH ESP8266 and an NCD.io current monitor. In its current design (pun), there is only enough room for the 97% single channel or 95% dual channel. When ordering these units, you can specify the current range. It is highly recommended to use a current rating as close to the amount of amperage that will be used. The fasteners used were 12 stainless steel 6/32 x 1/2 inch (can be longer) and 12 stainless steel nyloc nuts. The box is designed to allow the nuts to fit into sockets only requiring a screw driver to tighten each one down. Nuts and fasteners were purchased at a local hardware store. I would recommend the same as they are far more expensive on Amazon. I have also included the json file from Grafana.
Edit: There is now a single and double version of the lower box.
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