Assignment : Redraw the Echo-Hello-World Board
I don't understand about electricity very well.
So I studied and filled out some words about electricity.
Then I made some circuit using a breadboard for understanding electric behavior.
- Glossary
- Capacitor : Capacitor is a passive two-terminal electrical component used to store energy in an electric field.
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Resonator : Resonator is a device that exhibits resonance, that is,
It naturally oscillates at some frequencies, called its resonant frequencies, with greater amplitude than at others. - Inductor : Inductor is a passive two-terminal electrical component that stores energy in its magnetic field.
- Inductor : Inductors are one of the basic components used in electronics where current and voltage change with time, due to the ability of inductors to delay and reshape alternating currents.
- Vcc : Vcc is place where supply voltage to circuit. Vcc is written when Bipolar is used, vdd is written when unipolar is used.
- GND : GND is standard electric potential. Voltage of some parts are calculated compared with GND.
- SMD : SMD is Surface Mount Device.
I made circuit using a breadboard.
At the beginning I connected a LED and power supply directly, therefore broke some LED.
I learned that I need to put some resistor between LED and the Power Supply.
Then I made a circuit which had cds sensor.
This circuit become luminous when get dark around the sensor. From this thing, I understood resistor's behavior.
I also made this circuit which is named multivibrator.
As I made this circuit, I understood capacitor and transistor's behavior.
Design circuit using EAGLE
After I understood electric behavior, I studied how to draw circuit using EAGLE.
-What I study-
When I use LED, I have to connect resistor.
And I can adjust brightness of LED change resistor.
Export png file and edit
I redrew png file using GIMP. I filled picture, then made the outer frame.
Milling
I was sending png data from computer to Modela using the Fab Module.
Soldering
- Parts
- 6 pin Header(1)
- Single Row 2.54smd(1)
- 20Mhz Resonator(1)
- Resistor 10KOhm(1), 1KOhm(1)
- Capacitor 1uF(1)
- ATiny44A(1)
- LED(1)
I've finished to solder my circuit board.
Put the glue using the Gluegun.
Because Header pin is unstable.
Check a LED
At the beginning when I checked a LED, LED was not working.
Because LED was broken.
So I changed LED, LED worked.
