Difference between revisions of "NurdPower"

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(Intro)
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== Hardware ==
 
== Hardware ==
Wemos D1 mini connected to a TM1637 4x 7-segment display.
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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

Latest revision as of 12:04, 3 July 2019

Project NurdPower
NurdPower.jpg
Power consumption display
Status In progress
Contact bertrik
Last Update 2019-07-03

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