CHAPTER 3

WEEK 10

1. RC Helicopter

2. Circuit Development

   a) Relay
          Step 1 – make sure all the component that want to use is completed
          Step 2 – use the printed circuit which is circuit driver relay
          Step 3 & Step 4 – insert the 1kΩ resistor to the selected hole
          Step 5 – solder the resistor gently and make sure the soldering work is in the proper way.
          Step 6, Step 7, Step 8 & Step 9 – insert the diode, transistor, relay and LED in the selected hole
          Step 7 - solder the components nice and tidy.

   b) Microcontroller

          Step 1 – insert the IC base and resistor  in the selected hole

          Step 2 – insert the crystal and capacitor 18pF to the selected hole

          Step 3 & Step 4 – insert the LED and capacitor

          Step 5 & Step 6 – insert the voltage regulator and pin i/o in the selected hole

          Step 7 – make sure all the steps above are finish by soldering the component.