Differences

This shows you the differences between two versions of the page.

--- configure [2020/05/13 17:57] – adminz
+++ configure [2020/05/19 14:44] (current) – adminz
@@ Line 16: / Line 16: @@
   ( ( 3.3 * 7.0 ) / 2.6 ) - 3.3 ≈ 5.58
-So my **R1** should be 5.58K.  Now, it might be hard to find a 5.58K resistor but you at least know the neighborhood you need to be in.
+So my **R1** should be 5.58K.  Now, it might be hard to find a 5.58K resistor but you at least know the neighborhood you need to be in.  It is also important to remember that when you do select your resistor, remember that its tolerance plays a part in determining the actual trigger voltage.  So you might not hit exactly on the calculated voltage.
 Another way to wire the board for greater flexibility is to use 3.3K resistors for both **R1** and **R2** but wire **R1** inline with a 10k or 20k pot.  Combined with an adjustable power supply, you should be able to dial in a desired //vTrigger// easily.
 Lastly, note that I am //quite// bad with math, so double-check any values you get from this second formula calculation against the first one.