Battery adc read HTCC-AM01

#1

Hi,

I’m making my own Lora board using a HTCC-AM01 module (for arduino).
The question is:

To read battery voltage is necessary use this scheme or I can connect directly the battery to adc pin?

image

1 Like
#2

hi,

The ASR6501’s ADC pin can bear MAX Voltage is 2.4V.

#3

Hi,

I understood, but if I want to check the battery voltage without GPIO pin (without mosfet). What is the most simple circuit?

This is the battery ADC read in HTCC-AB01:

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image.png752×419 11.6 KB

If I remove the mosfet and GPIO 7, can I use this circuit to check the voltage of battery?

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image.png729×393 15.3 KB

Thanks,
XCO

#4

hi,

yes ,the anwser is Yes.

but This will affect low power consumption

1 Like
#5

Hi,

Ok very clear, I checked the source code and I understood the function of GPIO 7.
I’ll use se same schema of HTCC-AB01 (ADC battery) for make my HTCC-AM01 board (but i’ll remove the R13).

Thanks,
XCO