Dio
You are still confusing amperes and ampere-hours. The way to measure the current in a circuit is to plug in your multimeter in series with the battery (as if it was a battery). If you are struggling with a power supply providing enough current, it's usually better to measure the voltage, which is done by connecting the multimeter in parallel with the power supply. If the voltage drops sharply when the load is active (you are running the servos or whatever), then either the servo is trying to pull more than intended or the power supply isn't strong enough.
To measure voltage, you plug the leads on the multimeter to the ground (black) and the voltage measurement connector. To measure current, you have to move the red plug to the current measurement connector. If you have the plugs in the wrong connectors, the readings will be pretty much nonsense.
There's no fast way to measure the ampere-hours that a battery can provide, but then you usually don't need to know and you just read it from a spec sheet somewhere. The slow way is to fully charge the battery, then attach a reasonable load and observe how long the battery lasts (measure the voltage and plot it on paper, for example).
To measure how a battery behaves when loaded, you can use a resistor and measure the voltage across the resistor and compare that with the voltage of the battery when it's not connected to anything.
If you currently have a whole bunch of AAs and use a regulator, you might be OK. Remember though that regulators also have ratings and that the way they work is to just burn the excess voltage as heat, so if you plug in 12V and the regulator is 5V and you are using 1A current, the regulator is being heated with (12V-5V) * 1A = 7W power. If it's small and doesn't have much of a heat sink, it might get pretty hot and burn out if you use it for a long time.
I'm not going to try to troubleshoot the servo circuit or capacitors - those are well outside my range of knowledge.
You are still confusing amperes and ampere-hours. The way to measure the current in a circuit is to plug in your multimeter in series with the battery (as if it was a battery). If you are struggling with a power supply providing enough current, it's usually better to measure the voltage, which is done by connecting the multimeter in parallel with the power supply. If the voltage drops sharply when the load is active (you are running the servos or whatever), then either the servo is trying to pull more than intended or the power supply isn't strong enough.
To measure voltage, you plug the leads on the multimeter to the ground (black) and the voltage measurement connector. To measure current, you have to move the red plug to the current measurement connector. If you have the plugs in the wrong connectors, the readings will be pretty much nonsense.
There's no fast way to measure the ampere-hours that a battery can provide, but then you usually don't need to know and you just read it from a spec sheet somewhere. The slow way is to fully charge the battery, then attach a reasonable load and observe how long the battery lasts (measure the voltage and plot it on paper, for example).
To measure how a battery behaves when loaded, you can use a resistor and measure the voltage across the resistor and compare that with the voltage of the battery when it's not connected to anything.
If you currently have a whole bunch of AAs and use a regulator, you might be OK. Remember though that regulators also have ratings and that the way they work is to just burn the excess voltage as heat, so if you plug in 12V and the regulator is 5V and you are using 1A current, the regulator is being heated with (12V-5V) * 1A = 7W power. If it's small and doesn't have much of a heat sink, it might get pretty hot and burn out if you use it for a long time.
I'm not going to try to troubleshoot the servo circuit or capacitors - those are well outside my range of knowledge.
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