<~Here is the first LED light blackboard in CMSIII.

On last Thursday morning, I had my first lesson of CMS III. In that lesson, we need to build up the blackboard to glow the LED light up.





These are the main materials that we need to use on building this LED light blackboard:

1. Blackboard
2. 9V battery
3. Power switch
4. LED light
5. 220 Ohm Resistor

In this workshop, it will provide three different resistance values of the resistor. Thus, we need to find out which resistor is suitable of this LED light blackboard. They are 220 Ohm 5% (Red Red Brown Golden), 470 Ohm 5% (Yellow Purple Brown Golden) and 1000kOhm 5% (Brown Black Green Golden). If the resistance values of the resistor is over than the LED light needs, the LED light will not be glowed. Finally, we find that 220 Ohm 5% resistor is suitable for the LED light. Therefore, it will be the best resistor to use in this circuit.

In Kenny tutors, we need to build up the similar circuit on the in the lab. However, because of the power cut of our lab, the circuit is incomplete. So, we will continue in next Kenny's tutor lesson.