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I am powering an Arduino using a 5v battery (3.7v to a step-up module), and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power UsageMonitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

I am powering an Arduino using a 5v battery (3.7v to a step-up module), and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

I am powering an Arduino using a 5v battery (3.7v to a step-up module), and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

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Ahmed Farid
Ahmed Farid
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I am powering an Arduino using a 5v battery (3.7v to a step-up module), and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

I am powering an Arduino using a 5v battery, and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

I am powering an Arduino using a 5v battery (3.7v to a step-up module), and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.

Source Link
Ahmed Farid
Ahmed Farid
  • 169
  • 2
  • 2
  • 8

Measuring an Arduino's power source voltage using Analog In

I am powering an Arduino using a 5v battery, and I need to measure the voltage. Let's say the battery delivers high current, is it safe to measure the voltage via Analog In? As in this:

enter image description here

The reason I'm asking is that I don't know much about the Arduino's ADC architecture and limitations. So normally, I'd do so for safety:

enter image description here

Are the connections in the first diagram safe for the ADC? Thanks in advance!

Note: A similar question was asked here: (Monitor DC Power Usage), but it doesn't answer the question of high current loads on the battery.