Hi Marc, Welcome to EasyEDA. After a bit or research and model building, you can now find a couple of demonstrations of a generic DC and a specific stepper motor here: https://easyeda.com/andyfierman/Motor_models-yVJx7HgQ2 You will find a list of all the spice models and subcircuits currently available for EasyEDA here: https://docs.google.com/spreadsheets/d/1KM28xzXwgQeUUj3zRMlth9BN-vs6Q98KBk1FHXmf58U/pubhtml You can enter these model names into any approriate symbol from the EasyEDA Libs and then set the spice prefix to the prefix approriate for the model (Ngspice model types: https://docs.google.com/document/u/1/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.3hv69ve) You will find all other available spice symbols here: https://easyeda.com/component/user/spicesymbol or separated into those for models and those for subcircuits here: https://easyeda.com/component/user/model https://easyeda.com/component/user/subckt