Week 2 | Notion

Arduino IDE 1.8.19: hosted by GitHub and building code in it

voltage resistor(7805): convert 7-35V into 5V

Digital circuit:

// Analog circuit:need to code

	Digital (1 or 0)	Analog (many)
Input	buttons, on/off, switches Digital	Potentiometer, Sensor, temp.phtocell, pressure, distance A0~A7
Output	On/off Digital	LED, volume, DC Motor Digital(~)

DC: used for smaller voltage

AC:

In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically.
DC power supply: converts AC into DC

Open circuit: infinite resistance(air)

Short circuit: no resistance

IMG_1380.heic

IMG_1379.heic