The idea behind the datenGarten is to document and accompany the growth process of a wildflower bed by collecting data and creating visual representations. The datenGarten provides insights into the plants' well-being while offering a fascinating glimpse into the habitat of many insects.

The core of the dataGarden is an ESP32, which collects various data and transmits it to a web server. On the lid, you'll find sensors for temperature, humidity, and UV levels. Inside the device, a microphone is positioned near a drilled hole to capture outdoor sounds without interference. A camera module (ESP-Cam) on the side offers a “point of view” perspective of the datenGarten, while a soil moisture sensor hangs below and is inserted into the earth.

The system is installed by anchoring its four legs into the ground. Once a connected power bank is switched on, the data and images are transmitted to two web servers via an active internet connection.

A Processing code accesses this data and provides an update on the flower bed in the form of a greeting card. Depending on the values, corresponding graphics are displayed. The numbers are omitted, allowing the bed to indicate its current state in a way reminiscent of a Tamagotchi. The microphone captures the sound of rain, enabling it to detect and represent the intensity of the rainfall. With a click, the exact sensor values can also be retrieved.

Insects are finding it increasingly difficult to survive as their habitats disappear. Creating a wildflower bed is a direct and effective way to help insects. Here’s how to do it <3

Before sowing, it’s important to prepare the soil. Start by removing any roots and vegetation, then thoroughly loosen the earth. Wildflowers thrive in poor soil, which mimics their natural conditions and reduces competition from other plants. If the soil is heavy or moist, mix in plenty of sand to improve its structure. Finally, smooth the surface evenly with a rake.

Choose seeds that are native to your region, as they’ll be best adapted to the local climate and soil. Distribute 5 to 10 grams of seed per square meter evenly across the prepared soil. For seeds that germinate in light (light-germinating seeds), press them gently into the soil without covering them. Seeds that require darkness to germinate (dark-germinating seeds) should be lightly covered with soil to shield them from sunlight.

Light-germinating seeds dry out quickly and need regular moisture for up to two months. Dark-germinating seeds, on the other hand, should not be overwatered as they could rot. During dry periods, provide additional watering, while in rainy seasons, less watering is required.

It’s worth checking on your wildflower bed regularly to ensure conditions are just right. Over time, a wildflower bed can sustain itself and grow beautifully.