ESP8266 Community Forum

- Fri Oct 09, 2015 3:18 am #30934 JP, thanks for the posting.
I've been trying to talk from my ESP-12 to HX711, but DOUT never comes HIGH.
[I tested that the bit-banging works by forcing the DOUT to GND or 3.3V, I do read 0x00FFFFFF or 0x00000000]

So, my question is if you powered HX711 with +3.3 or with +5? Then you need a level shifter, right?

[Otherwise I have to re-double-check my wiring or declare my HX711 as dead...]

Thanks for any info on the matter!

Greg

- Fri Oct 09, 2015 3:32 am #30935 In my own bathroom scale I use only 3.3v with 4 sensors. You can see a shematic here.

I can speak French or Spanish, but my English can be a little funny

- Fri Oct 09, 2015 1:12 pm #30962

JP, thanks for the posting.

So, my question is if you powered HX711 with +3.3 or with +5? Then you need a level shifter, right?

Thanks for any info on the matter!

Greg

Hi Greg,

HX711 is powered safely between 2.7 and 5.V.

So I simply power it with 3.3V . So no need for a level shifter !

JP

- Fri Oct 09, 2015 3:59 pm #30975 Hello JP,

Thanks for your reply, good to know that it should work with 3.3V...

I tried with another HX711 of different origin and I still can't get DOUT to go up, not sure why.

Greg