temp.hofkoh.de

This project measures the outdoor temperature in Hofkoh. Results are published and visualized in the web.

2013 - 2016

It ran from 2013 to 2016 and collected data of lower Saxony.

Detailed description in software.

Documentation 2013

I created a pdf document that documents all building and programming steps for this project. It can be found in the documentation folder.

Update 2020

The history function was finally made to work.

… picture and link follow

New station in Ho Chi Minh City

In 2020 it was updated to Ho Chi Minh City. And with an ESP8266 and LM35 the station costs only 3.77 € compared to 53.39 € for WR703N and DS18S20 with DS9490R OneWire USB adapter.

Hardware

In 2013:

• TP-Link WR703N (at aliexpress 2020 for 34.25 USD
• DS18S20 (DS18B20 for 22.000₫ = 0.95 USD)
• DS9490R OneWire USB adapter DS9490R USB:1-Wire RJ11 Adapter for 27.50 USD

In 2020:

• ESP8266 (Arduino ESP8266 NodeMcu Lua WIFI V3 for 78.000₫ = 3.38 USD)
• LM35 (LM35DZ/NOPB for 20.000₫ = 0.87 USD)