.

Insert wires into breadboard and let the toy car move

.

..\rune\








what fact influence resistance ?

.

Ohm's law

.

How current flow on Breadboard

.

How capacitor store electricity

.

The charge and discharge of capacitor

.

The speed of discharge of capacitor

.

Light Sensor--CdS don't conduct at night

.

Parallel and series of resistors

.

Electromagnet

.

How relay works

.

Relay used in Letry robot kit

.

NO Contact in Relay

.

NC Contact in Relay

.

Control the Rotating Direction of Motor

.

Three Basic Logic Gates

.

The Combination of Logic Gates

.

Make logic circuit with Logic IC's

.

Invertor do not obey input

.

LED on automatically at night

.

More dark , higher voltage

.

More dark , lower voltage

.

Transistor is similar to hydrant

.

Shadow to Run

.

Transfer Infra-red signal to voltage signal

.

Stop before obstacle

.

Turn before obstacle

.

LED on...off...on...off

Example of AND Gate

.

Example of OR gate

.

Turn the transistor by shadow

.