ESP8266 Community Forum

- Tue Dec 13, 2016 3:39 pm #59473 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?

- Wed Dec 14, 2016 12:49 am #59484 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

- Wed Dec 14, 2016 11:11 am #59497 I know i should use logic level converter too, but i dont know how.

- Thu Dec 15, 2016 6:32 am #59519

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