Cards for electronic circuits; microcontrollers; printed circuit boards; computer hardware component sub-assemblies for assembling custom electrical and electronic devices; wireless transmitters and receivers; printed circuits for LED; instruments for making software; computer hardware kits for carrying out electronic projects, formed by cables, wires, resistors, buttons, temperature and humidity sensors, tilt sensors, light emitting diodes (LEDs), servo motors, piezoelectric sound components, capacitors, transistors, electric resistors, batteries (cells), connectors and electronic hardware and circuit boards for recording, organizing, transmitting, manipulating, reviewing, and receiving downloadable text, data, image and audio files; electronic devices for use in relation to teaching, testing, prototyping, measuring, scientific experiments and any field requiring conversion of physical properties into electrical signals, also for processing and/or communicating the results and/or for operating electric triggers; electronic devices for teaching purposes