Mini-KASCADE is the attempt to provide a high-quality, but mobile small scintillator array to detect cosmic ray air showers. In my master thesis I am recycling scintillators from the KASCADE experiment for such small modular detector array. The main goal is to replace the currently used DAQ-rack from the KASCADE era with small DAQ-cards. Focusing on miniaturization and reducing the data per event in the DAQ chain as early as possible, the data rate should be low enough to use a small single-board computer (like a Raspberry Pi) to exchange events between the detectors and the master node, which handles the data analysis.