Powering ntc thermistor by gpio from nrf52832

[lawalan]

Hello all,

As i want to lower the power consumption, may i know if its possible to connect the supply voltage of ntc thermistor to any gpio of nrf52832 instead of directly to the battery?

Thanks.

[Håkon Alseth]

Hi,

 

Are you thinking about doing something like this?

 

If that is what you're asking, then yes: you can use a GPIO output as the voltage source for such a circuit. Just note that if your NTC is of a very low resistance (less than 1k), you may have to configure the GPIO_OUTPUT as "HIGH_DRIVE" in NRF_GPIO->PIN_CNF[GPIO_OUTPUT], field "DRIVE".

 

Best regards,

Håkon