Hello,

when I have started the project 07 I am curious that is there a way to calculate analog read (0-1023) and resistor. For example, in this project shows that without resistor the analog read as 1023.However, if there is a resistor with 220 ohms the analog read as 1001-1002.

Is anyone know that if I want specficc analog read number how much resistance do I need. Is there a formula to calculate these values.

Many Thank,