and when I bring the 5v rail down to 3.3v or 3.7v and try and use that
adafruit_support wrote:and when I bring the 5v rail down to 3.3v or 3.7v and try and use that
How are you doing that?
Zener wrote:There's a little problem with doing it that way... Did you verify the 3.3V while you were doing all that? Because it probably dropped out a lot. Quiz question is: what happens when you start to draw current through the 10k of the divider?
Zener wrote:Hook a volt meter to teh 3.3V line and verify that it is still 3.3V with everything hooked up. I am guessing it is not.
Zener wrote:Put 3 diodes in series. That's not the best correct way but will work. Correct way is 3.3V regulator or bench supply.
Users browsing this forum: lyndon and 4 guests