Difference between revisions of "NurdPower"

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== Intro ==
 
== Intro ==
Shows power usage (from MQTT) on a 7-segment display.
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Shows power consumption (from MQTT) on a 7-segment display.
  
 
== Hardware ==
 
== Hardware ==

Revision as of 01:22, 30 June 2019

Project NurdPower
NurdPower.jpg
Power usage display
Status In progress
Contact bertrik
Last Update 2019-06-30

Intro

Shows power consumption (from MQTT) on a 7-segment display.

Hardware

Wemos D1 mini connected to a TM1637 4x 7-segment display.

Connections:

  • display 5V to Wemos 5V
  • display GND to Wemos GND
  • display DIO to Wemos D4
  • display CLK to Wemos D3

Software

Source code is on github.

Basically it subscribes to the MQTT stream, receives power updates and displays them on the 7-segment display.

Uses the following libraries:

  • TM1637 driver to set the digits.
  • WifiManager
  • PubSubClient