Copy of Voltage Ladder Arduino 12V 9V 5V 3.3V 2.8V

12V VOLTAGE DIVIDER ARDUINO * This circuit takes 12V DC and divides it into popular voltage values such as 9V, 5V, 3.3V, and 2.8V that you can use with Arduino or other microcontrollers/sensor projects. ---------------------------------------------------------------------------------------------------------------------- VOLTAGE FORMULA: Vout = V - Vdrop = V - Vin * ( R / Rtotal ) ---------------------------------------------------------------------------------------------------------------------- EXAMPLE: VR1 = 12V - Vdrop = 12V - 12V * ( 3k/12k) = 12 - 12 * (1/4) = 12 - 3 = 9V VR2 = VR1 - Vdrop = 9V - 12V * ( 4k/12k) = 9 - 12 * (1/3) = 9 - 4 = 5V VR3 = VR2 - Vdrop = 5V - 12V * ( 1.7k/12k) = 5 - 1.7 = 3.3V ---------------------------------------------------------------------------------------------------------------------- CURRENT FORMULA: I = V / R I = 12V / 12k = 1mA ---------------------------------------------------------------------------------------------------------------------- GRAPHER: GREEN = 12V | LIGHT BLUE = 9V | DARK BLUE = 5V | PURPLE = 3.3V | PINK = 2.8V ----------------------------------------------------------------------------------------------------------------------