Taking regular readings with a sensor and storing the results are a common task for microcontrollers, but it usually requires some programming and soldering. However, thanks to WipperSnapper Offline and STEMMA QT, we can get everything up and running without programming or soldering.

In this project, you create a temperature and humidity monitor that can record values as bread dough rises (the process known as proofing). However, you can use this for any situation where you want to record the temperature and humidity over time. It's not just temperature & humidity, you can connect a wide variety of sensors to record other things. There's a list of supported hardware at https://learn.adafruit.com/no-code-offline-data-logging-with-wippersnapper/supported-hardware.

Parts

The SHT45 sensor is available with and without a PTFE filter. In this case, I recommend the version with the filter as it will help keep contaminants out of the sensor.

WipperSnapper offline can work with any MicroSD card under 32 GB. If you don't already have one, I recommend the following:

Optional components

The above components will let you record data at regular intervals, but won't keep track of the time that readings were taken. If you want to record the actual time of readings, then you'll need the real-time clock (RTC) below and another STEMMA QT cable.

You might also need:

You'll also need a way of connecting the RP2040 Adalogger to a computer and a power supply.  The RP2040 Adalogger has a USB-C port, so depending on your computer, you'll need one of the following if you don't already have them.

You'll also need a way of reading the data off the MicroSD card. Many laptops have SD cards built in, though you might need a MicroSD to SD adapter, which is included with the MicroSD card above. If you don't have one already, you'll need something like the following (which needs a USB-C port)