ESP8266 Community Forum

Hi.
I am making a small project with NodeMCU v3 module, and i have problem with power supply. The device will be power by four AAA bateries, which give 6V. And now, how i should connect hx711 module with esp8266, because NodeMCU v3 has only 3,3V pin, and i need 5V to power load cell by hx711. Can anyone help me? Maybe i should use 5V and 0,1A regulator?

Hello,

According to the datasheet, the HX711 is happy from 2.6 to 5.5 volts... perhaps you could just run it from the 3.3V source supplied to the ESP8266?

http://www.aviaic.com/uploadfile/hx711_brief_en.pdf

Jon

I know i should use logic level converter too, but i dont know how.

hunterwc wrote:I know i should use logic level converter too, but i dont know how.

no, if you supply HX711 with 3.3v, then there's no need for any level converters, HX711 will output ~3.3v level