The "ground rail", and the "power rail" are the line of holes / contacts that run along the edge of the breadboard. The holes next to the blue line in the diagram would normally be the "ground rail",/ 0 volts / GND or negative terminal of the battery. The row of holes next to the red line would normally be the 5V, / VCC / "power rail" / positive terminal of the battery. All the points in each row are connected together and are designed to make it easy to route the power supply around your circuit.freaky1310 wrote: ↑Fri Jun 15, 2018 5:11 pmHi, thank you for the answer. About the wiring: since I'm a newbie to the breadboard wiring (and also a newbie to RasPi in general), can I ask you to explain in a very basic way what "ground rail of the breadboard" means?
About the photos: I just thought the were useless since they would be identical to the scheme. Anyway, later I'll take and post them.
Finally, about the motors: they're two DC motors, 4.5V. Don't really know what the precise model is, because there's nothing written on them. If it can help, they're just like the models in the picture, but with (respectively) a blue (front motor, left/right) and a white (rear motor, backward/forward) stripe, instead of the yellow one.
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