The Davis Instruments solar radiation and UV sensors require a specific mounting plate. As far as I’m aware, there are two options available. You have the sensor mounting shelf which can be attached to the rain collector. Then you have this universal mounting bracket. It can fit one radiation sensor. It also comes with the […]
Author: meteodrenthe
Unboxing the SIAP+MICROS SMarT CELLino radiation shield
It’s Summer. A good excuse to get a new radiation shield. Earlier this month I received a new model from SIAP+MICROS: the SMarT CELLino. As the linked article mentions, the shield is created as a collaboration between the Italian company and Marcellino Salvador. That explains the name of the product. Most of it anyway. 🙂 […]
Good barometers: the BMP388 and BMP390
Barometric pressure is considered to be one of the less interesting metrics to measure with a personal weather station. As a factor in global weather predictions it is very important, but in terms of current conditions we learn a lot more from our thermometers, anemometers, rain gauges and other sensors. Especially if we are considering […]
Reading fan speed from the Barani MeteoShield Pro fan-aspirated model (FARS)
In this post, I explained how I use a Wemos D1 Mini microcontroller and a MOSFET module to control the fan speed of a wired fan-aspirated MeteoShield Pro from Barani Design. I am also testing a model with a fan powered by solar panels. Both come with two additional wires connected to a reed switch […]
Controlling fan speed on a Barani Design prototype fan-aspirated radiation shield
Recently, I was fortunate to receive a new prototype model of the fan-aspirated MeteoShield Pro from Barani Design. On this version, the solar panels are replaced with two power wires, making it possible to connect an external power source, allowing the fan to be active 24 hours a day. Varying fan rpm is possible by […]
How to use the Ecowitt Gateway (GW1000 GW1100) local API
Using Ecowitt weather sensors often means using their WiFi gateway to process sensors updates. It offers a web interface that allows you to configure several weather services like Weather Underground, Weathercloud and others. But what if you have other plans with your data, like exporting it to your own database? There are several ways to […]
The B parameter vs. Steinhart-Hart equation
In my previous post about reading thermistors with a Wemos D1 Mini, I observed resulting output seemed a bit high at lower temperatures, while readings were lower compared to other sensors at higher temperatures. (If you haven’t read that post yet, you may want to check that first in order to understand the starting point […]
Getting accurate NTC thermistor readings with a Wemos D1 Mini
A thermistor is a very common type of thermometer. They are cheap and readily available in many forms. Thermistors are are simple devices. A thermistor is basically nothing more than a resistor that changes its resistance with temperature. Very popular are 10K NTC thermistors. Negative Temperature Coefficient (NTC) means that resistance drops when temperature rises. […]
Trying out a Vaisala DTR504
I’ve pretty much settled on my current radiation shield setup. Based on personal research alongside that of others, I do not think I will find an affordable radiation shield that can outperform the Barani MeteoShield Pro. Whenever I have doubts about radiation errors, the results produced by sensors inside my actively ventilated Apogee TS-100 will […]
Active versus passive ventilation under high radiation
It’s June. An ideal month in the Northern Hemisphere to observe the effectiveness of radiation shields under high solar radiation. Two of my main sensor setups are a passively ventilated Barani MeteoShield Pro with an SHT35 sensor and the actively ventilated Apogee TS-100 with PT100 sensor. In theory, there should be situations where the Barani […]