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Category: Arduino

Project Apogee part 1: fan aspiration

Posted on July 20, 2021December 27, 2021 by meteodrenthe

My big project for the summer of 2021 is adding a fan aspirated radiation shield to my setup. My primary shield – the Barani MeteoShield Pro – is a superb product, but a passive shield it remains. It suffers from overheating in windless conditions. Those conditions do not occur too often at my location, but…

Tuning the AS3935 lightning detector

Posted on May 19, 2021August 13, 2021 by meteodrenthe

As I pointed out in my previous post on the AS3935 lightning detector, the AS3935MI library available through the Arduino IDE works quite alright. However, every time I boot the Wemos D1 Mini with it, I get a warning that the calibration of the resonance frequency failed. As per the datasheet, the frequency needs to…

AS3935 lightning detector with Wemos D1 Mini

Posted on May 14, 2021May 19, 2021 by meteodrenthe

Lightning detection has been on my wish list for my weather station for some time. Detectors often come as stand alone units with a display or indicator LEDs. This makes sense when the use case involves taking it along as a hand held device or installing it on your boat. However, in order to process…

Upgrade to the SHT35

Posted on February 8, 2021February 8, 2021 by meteodrenthe

Around New Year’s I took the time to finally bring a new Sensirion SHT35 temp/hygro sensor online. It’s an upgrade compared to the SHT31 sensor chip Davis uses for their Vantage Pro 2. On top of it being more precise (+/- 0,1 C in stead of 0,3 for the SHT31) it also registers an extra…

Proof of concept custom console display

Posted on December 15, 2020December 15, 2020 by meteodrenthe

The Davis Vantage Pro 2 display is quite a bulky thing. I’ve added non-Davis sensors to my setup, and included a Davis AirLink in October too, which is WiFi based and not visible on the console. Plus, my console has been partially broken for a while. 🙂 Reason enough to look at an interesting alternative:…

Switch to the BMP280 pressure sensor

Posted on December 10, 2020 by meteodrenthe

In a previous post I wrote about tests of the BMP180 pressure sensor. These were not all I hoped for, so I ordered a BMP280 sensor, which is supposedly an upgrade of the BMP180. Perhaps it would give me better results. As it turns out, it appears it does! I only ordered one sensor at…

The BMP180 barometer

Posted on November 20, 2020February 17, 2021 by meteodrenthe

I have long been unhappy with the performance of the Meteostick internal barometer. Although the values it emits are usually totally acceptable, it tends to spike inexplicably multiple times a day. So, this week I finally came around to installing a new sensor, the Bosch BMP180. Its performance compared to the Meteostick can already be…

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My personal weather station is located in a small township in the North of the Netherlands.

This blog records updates to my setup, development of components, weather reports and anything related.

Real time data generated by the weather station can be found on meteodrenthe.nl.

Some products and technologies in use:

Davis Vantage Pro 2

Davis AirLink

Davis WeatherLink Live

Barani MeteoShield Pro

Apogee Instruments TS-100

Davis 7714 radiation shield

MetSpec RAD14 radiation shield

Vaisala DRT504

Siap+Micros SMarT CELLino

Wemos D1 Mini microcontrollers

Bosch BMP280/BMP3xx pressure sensors

Sensirion SHT35 temp/hygro sensor

PT100 temperature sensor

10K NTC thermistors

Adafruit breakout boards

ADS1115 analog-to-digital converter

Light intensity sensors

Voltaic Systems solar panels

Foscam FI9900P weather cam

Raspberry Pi Zero W

Custom printed circuit boards

C++ (Arduino code)

Java (server backend)

Angular Framework

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