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OK, so let's go ahead and run this experiment, the first experiment that I run involves the P2P file,

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which is going to execute, which can you run when I power the to from the external power supply and

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it's going to put the authority into deep sleep for ten seconds and they will give me enough time to

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take a reading of its current control from my amp meter here.

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And I'm going to repeat the same experiment.

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But instead of deep sleep, I'm going to go for light sleep, give me the opportunity again to take

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a current draw measurement at that state.

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OK, so I'm going to go ahead and disconnect the USB cable and I'm going to connect the red cable coming

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from the positive lead of my benchtop.

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Power supply can connect it to five volts, five or ten.

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And then the other lead, the black lead is going into the AMP meter comes out and I've already connected

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the lead from the AMP meter into the ground, powering all of the breadboard.

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I'm going to turn on the power supply.

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I've already calibrated it to five volts since it's going into the five volt pen.

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And while I'm taking a look at the AMP meter is going to zoom into it that I'm going to turn on the

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power supply.

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All right.

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So we have about 10 million amps of Catedral.

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Give a few more seconds.

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And out of deep sleep, back into normal operation, 36 million amps, you'll get about 10 million amps

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when it's in deep sleep versus around 36, a little bit more than 36 million amps when it's in normal

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operation with no other peripheral connected.

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All right.

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So that's a first step.

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I'm going to turn it off and plug the leads and connect my computer.

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I can make a change to the pipe program.

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All right.

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So back into Thorney, it's going to.

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Reset the board so I can access a bit of profile, here is what I'll do next is I am going to change

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deep sleep into the light sleep.

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Like that.

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And as per my previous test, I believe that the when the E it comes out of light, sleep is still going

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to report.

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Before we said cause I'm going to leave their cities here safe with a P y and let's try it out and plug

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USB, connect the red lead from the power supply to the fireboat, pin on the battery too, and the

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other one to ground.

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Close the circuit and turn on the power supply.

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Still can barely defy votes.

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And then 10 year old.

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Right.

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So that is the light sleep, you can see slightly more consumption, no control, maybe just one million

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additional.

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And back to normal, 36 Wiliams.

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So interesting that they can draw a difference between deep sleep and light sleep is just about one

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million.

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Which has the benefit of preserving your ram so your program can continue from where he left off.

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It's not doing a hard research, the soft reset that may be important in some cases, but it's less

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than I thought it would be.

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OK, that concludes this lecture and these two experiments.

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So, again, to recap, you now have two methods of controlling the oil, extending the battery life

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of hospitality, battery powered gadget.

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You can use the frequency control method, reduce the speed of the C.P.U.

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That will have a consequence of the current rule, and the second method is to use deep sleep or light

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sleep to preserve it and better than.