i don't think there's anything wrong with the design cause ive tried tesing each part of the design in isolation, they where working. even the driver of the motor is working. as ive said you can try it if you have spare parts. The only problem that ive encountered, ive already said, the current from the combinations of logic gates is very low. which i need to amplify. Note: it's DC not AC. Transistors can work fine even without biasing resistors when used in DC (based on my experience). I only put resistors on the junctions if i need to limit the current to avoid burning it. what i need is to amplify the current enough to shorten C and E.