Products
The Resistance Data Logger (RDL) allows you to measure multiple temperatures,
humidities, luminosity values and more at an affordable price.
Watch the incoming data
Whether you connect the RDL device to a computer or a smartphone, you can watch the data come in live through the serial monitor. Activate the logging to a text file in the background, when needed. Pretty much any operating system that you can think of has some serial monitor application.
Radiant temperature
You can build yourself a black globe for less than $C5 instead of a $C500. Commonly used to evaluate thermal comfort and heat stress, commercial black globes are usually quite expensive as they are made of custom made 6-inches copper spheres (e.g. Campbell Scientific). By compromising on reactivity, you can build a very good device from a 6-inches Christmas ball painted with black BBQ spray paint. Just insert your thermistor in the middle of the globe and you are ready to go.
All Open Source
The firmware code is licensed under GPL, the hardware is licensed under MIT and the documentation is licensed under Creative Commons (CC-BY-NC). As it is, most of the working environment is also open source: Arduino IDE (coding), KiCAD (PCB design), FreeCAD (CAD model for 3D printing) Linux (OS), Android (smartphone mode). This reduces the cost for us and the users.
High speed measurements
By many standards, thermal applications are usually slow paced. But if the often-used 1 Hz sampling is not enough, you can crank the single channel mode up to 300 Hz per second. Here, the graph shows with fine details the 5 sec experiment of a thermistor that goes in and out of a cup of tea. You can see the various phases of heat transfer as well as the end temperature plateau, which is cooler than the initial temperature because of evaporative cooling on the surface of the probe.
Product Specifications
You can download the detailed product specifications on our public Github repository.