The current paper deals with the use of open source, low cost solutions for the development of educational seismic networks. The contribution of the current research is the minimization of sensors' and accompanying hardware costs through newly implemented devices as well as their coupling to custom and public available software. Our effort is to deploy plug-n-play devices with initial cost under 10€ in their basic versions that can be easily operated by school teachers without the need of complicated instructions. Two solutions based on different microprocessors (with the accompanying software) along with preliminary guides for inquiring students into seismology are presented.