One more to go! D&T! Ahhhh going crazy because of electronics chapter and i got 4/20! LOL. And also sketching lah! I dont know perspective drawing T.T Structures is alright, i got 22/30. Structure just need understanding and memorising but electronics i cant like even remember.

ignore this part please, i want to test myself for dnt.
555 circult, 3909 circuit, moisture-sensing circuit, temperature-sensing circuit, light-sensing circuit,
Thyristor, transistor, light dependent diode, light emitting diode, potentiometer, variable resistor. thermistor, photodiode, capacitor, semi-conductor diode.
555 circuit have more accurate timing. moisture-sensing circult, LED lights up when damp. Temperature sensing circuit, bulb lights up during warm conditions (adding a potentiometer can vary the resistance), light-sensing circuit ( turn on voltage must be above o.7V for the transistor to work) ( add a resistor to it to change the sensibility) ( change the place of the LDR and resistor so that it can work in the dark)
Thyristor stays on until it is manually reset. Capacitor acts as a rechargeable battery, current flows through it and 'charges it' ( used in time delay circuits )

And thats only 1/4 of it omg.

Zebra never changes its stripes LOL.
i found out..so yeah..!