Datasheet

VCC: 2.7-5.5V
VBG = 1.25V
AVDD = VBG(R1+R2)/R2
Default: Closed - Data rate set to 10SPS
Open jumper to set to 80SPS
Increases noise per read
E+
E-
A-
A+
Red
Black
White
Green or Blue
Common Load
Cell Colors:
IO: 2.7-5.5V
ShieldYellow
VDD: 2.7-5.5V
VCC vs VDD:
VCC is the main supply voltage, while VDD sets the
digital logic voltage reference and should be
connected to microcontroller supply voltage, or
shorted to VCC.
HX711
MMBT4403
GND
100
100
10uF
10uF
GND
VCC
GND
VCC
VCC
GND
8.2K 20k
GND
VCC
10K
VCC
GND
0.1uF
0.1uF
0.1uF
VCC
GND
0.1uF
GND
GND
VDD
VDD
3.3uH
VDD
GND
0.1uF
VSUP
BASE
AVDD
VFB
AGND
VBG
INA-
INA+ INB-
INB+
PD_SCK
DOUT
XO
XI
RATE
DVDD
U1
Q1
R3
R4
C6
C7
R2 R1
R5
C1
C5
C2
1
2
JP2
SJ2
1
2
3
4
5
JP4
C3
1
2
3
4
5
J1
L1
C4
DAT
SCK
A-
A+
B+
B-
AVDD
Alex Wende
N. Seidle
v11
Released under the Creative Commons
Attribution Share-Alike 4.0 License
https://creativecommons.org/licenses/by-sa/4.0/
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