Hello,
Very new to using my digital oscilloscope and may be asking for something that is not possible on an Oscope.
I am testing a 6v LED lamp light (Orbitec LE-G4 3w)using two different battery types - Nimh and Lipo. With the Nimh I am using 4 AAA battery (rechargeable Eneloop) to get the required 6v and for the 4.7v Lipo I am using a Polulu Booster to up the 4.7v to 6v. While I can perform the calculations to determine the amount of time the 3w lamp should remain on I am also interested in measuring the drop in brightness the lamp shows when running on the Nimh batteries. I have set up a test using a light sensor breakout and an Arduino and from the time stamped results appearing in the IDE monitor I will create a graph of the brightness variation/decrease - I expect it might be a straight line but not sure what I will actually get. I would also like to measure the voltage drop as a component of that brightness decrease (again probably a straight line graph) and while it is easy to take a voltage measurement with the oscope or Multimeter and see it decrease over time I cant see how to record the decrease over time so I can graph it or if that is even possible? The Polulu and Lipo arrangement in theory should not show any decrease in lamp brightness until input voltage from the Lipo powerpack drops below a threshold for the booster at which time the lamp will simply go out.
Long winded explanation but hope an outline of what I am trying to achieve will allow some comments and advice about my process as well as any advice on recording the voltage drop over time. OR is all of the measurement unnecessary and two straight lines on a graph is all I am going to get anyway
Thanks in advance for any assistance.
Very new to using my digital oscilloscope and may be asking for something that is not possible on an Oscope.
I am testing a 6v LED lamp light (Orbitec LE-G4 3w)using two different battery types - Nimh and Lipo. With the Nimh I am using 4 AAA battery (rechargeable Eneloop) to get the required 6v and for the 4.7v Lipo I am using a Polulu Booster to up the 4.7v to 6v. While I can perform the calculations to determine the amount of time the 3w lamp should remain on I am also interested in measuring the drop in brightness the lamp shows when running on the Nimh batteries. I have set up a test using a light sensor breakout and an Arduino and from the time stamped results appearing in the IDE monitor I will create a graph of the brightness variation/decrease - I expect it might be a straight line but not sure what I will actually get. I would also like to measure the voltage drop as a component of that brightness decrease (again probably a straight line graph) and while it is easy to take a voltage measurement with the oscope or Multimeter and see it decrease over time I cant see how to record the decrease over time so I can graph it or if that is even possible? The Polulu and Lipo arrangement in theory should not show any decrease in lamp brightness until input voltage from the Lipo powerpack drops below a threshold for the booster at which time the lamp will simply go out.
Long winded explanation but hope an outline of what I am trying to achieve will allow some comments and advice about my process as well as any advice on recording the voltage drop over time. OR is all of the measurement unnecessary and two straight lines on a graph is all I am going to get anyway
Thanks in advance for any assistance.