Letry Robot http://www.letry.com.tw
Insert wires into breadboard and let the toy car move
.
.
what fact influence resistance ?
.
Ohm's law
.
How current flow on Breadboard
.
Parallel and series of resistors
Animation for learning Letry robot
Insert wires into breadboard and let the toy car move
.
.
.
.
Letry Robot http://www.letry.com.tw
.
what fact influence resistance ?
Ohm's law
How current flow on Breadboard
Parallel and series of resistors
.
How capacitor store electricity
.
The charge and discharge of capacitor
.
The speed of discharge of capacitor
.
Light Sensor--CdS don't conduct at night
.
More dark , higher voltage
.
More dark , lower voltage
.
Transistor is similar to hydrant
.
Turn the transistor by shadow
.
Three Basic Logic Gates
.
The Combination of Logic Gates
.
Make logic circuit with Logic IC's
.
Example of AND Gate
.
Example of OR gate
.
Invertor do not obey input
.
LED on automatically at night
.
.
.
Electromagnet
How relay works
Relay used in Letry robot kit
.
NO Contact in Relay
.
NC Contact in Relay
.
Control the Rotating Direction of Motor
.
Shadow to Run
.
Transfer Infra-red signal to voltage signal
.
Stop before obstacle
.
Turn before obstacle
.
LED on...off...on...off
.
.