On HX711 datasheet a very important parameter is missing.
>From 24 bits, how many are noise free (ENOB)?

For example, TI 32bit ADC has 24bit noise free only.
http://www.ti.com/lit/ds/symlink/ads1262.pdf

So, you have 24bit resolution and  perhaps 16 useable or even less?
<https://www.avast.com/sig-email?utm_medium=3Demail&utm_source=3Dlink&utm_c=
ampaign=3Dsig-email&utm_content=3Dwebmail>
This
email has been sent from a virus-free computer protected by Avast.
www.avast.com
<https://www.avast.com/sig-email?utm_medium=3Demail&utm_source=3Dlink&utm_c=
ampaign=3Dsig-email&utm_content=3Dwebmail>
<#-1901437057_DDB4FAA8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

On Mon, May 18, 2015 at 6:36 AM, RussellMc <apptechnz@gmail.com> wrote:

> Just met this IC + PCBAs for the first time.
>
> AVIA semiconductor HX711 - Low cost dual channel 24 bit sigma delta IC
> targeted at digital-scale applications (+/-20 - 80 mV FSD)
> Overall "goodness" unknown.
>
> IC and PCBAs available
> HX711
> Dual channel 24 bit Delta Sigma ADC
> Channel 1 +/1 20mV or 40 mV FSD
> Channel 2 80 mV FSD.
> 1,25V bandgap ref.
> *NO accuracy etc specs given *(not auspicious)
> Serial out
> 5V 1.5 mA optg. < 1 uA power down.
>
> *Data sheet  http://www.dfrobot.com/image/data/SEN0160/hx711_english.pdf
> <http://www.dfrobot.com/image/data/SEN0160/hx711_english.pdf>*
>
> Modules (IC + glue on PCB) from under $US1
>
> *Modules*
>
> $US5.70/1 free shipping
>
> http://www.aliexpress.com/item/5pcs-lot-Weighing-Sensors-AD-Module-for-Mi=
crocontroller-FZ0728/1509340309.html
>
> $17.95/20
>
> http://www.aliexpress.com/item/Free-Shipping-20PCS-Goose-electronic-hx711=
-module-weighing-sensor-24-ad-module-pressure-sensor/2043679721.html
>
> $7.90/10 free shipping
>
> http://www.aliexpress.com/item/10pcs-HX711-Weighing-Sensor-Dual-Channel-2=
4-Bit-Precision-A-D-Module-Pressure-Sensor/32276373968.html
>
> With metal shield and "extra IC" - use unknown
>
> http://www.aliexpress.com/item-img/HX711-Dual-channel-24-bit-A-D-Conversi=
on-Weighing-Sensor-Module-with-Metal-Shied/2054843273.html
>
> *ICs from under $US0.50*
>
> $44.55/100
>
> http://www.aliexpress.com/item/HX711-SOP16-100pcs-lots-Original-authentic=
-and-new-in-stock-Free-Shipping-IC/32217444789.html
>
> $13.20/20
> http://www.aliexpress.com/item/new-hope-HX711-HX711-SOP16/1847929061.html
>
> ________________
>
>
> Gargoyle says:
>
> https://www.google.co.nz/search?q=3Dhx711&biw=3D1280&bih=3D789&tbm=3Disch=
&tbo=3Du&source=3Duniv&sa=3DX&ei=3D6FJZVfKrDtjU8gX37ICAAw&sqi=3D2&ved=3D0CC=
IQsAQ
>
>
>
> Ali Express many
>
> http://www.aliexpress.com/wholesale?SearchText=3Dhx711&origin=3Dy&catId=
=3D0&initiative_id=3DSB_20150517190542
> --
> http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
> View/change your membership options at
> http://mailman.mit.edu/mailman/listinfo/piclist
>
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.