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  |Picture=NurdPower.jpg
  |Picture=NurdPower.jpg
  |Omschrijving=Power consumption display
  |Omschrijving=Power consumption display
  |Status=In progress
  |Status=Stalled
  |Contact=bertrik
  |Contact=bertrik
}}
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== Hardware ==
== Hardware ==
Wemos D1 mini connected to a TM1637 4x 7-segment display.
Wemos D1 mini connected to a TM1637 4x7-segment display.


Connections:
Connections:
* display 5V to Wemos 5V
* display VCC to Wemos 5V (3.3V also works with red LEDs)
* display GND to Wemos GND
* display GND to Wemos GND
* display DIO to Wemos D4
* display DIO to Wemos D4

Huidige versie van 11 mei 2020 13:19

Project NurdPower
Power consumption display
Status Stalled
Contact bertrik
Last Update 2020-05-11

Intro

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

TODO:

  • put it in a case
  • mount it somewhere

Hardware

Wemos D1 mini connected to a TM1637 4x7-segment display.

Connections:

  • display VCC to Wemos 5V (3.3V also works with red LEDs)
  • 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