analog pin not stable for reference


Author Message
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5186
Posted: 08:10am 28 Jun 2011      

Hi Sparky

You might need to add a capacitor across the pin to settle it down a bit. Try a 1uF or 10uF cap. Erratic analogue inputs are a common problem, but there is usually a solution, you need to find the right combination of caps, resistors and software to give the results you expect.

How much is it jumping around, what are the voltage extremes, millivolts or volts.

Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ