Sampling HX711 24-bit AD chip, dual-channel differential input. Full SMD machine welding, with metal shielding, distribution of straight and curved pins, to meet various installation and welding types, the board uses two 47uF capacitors, the material is very sufficient!

Built-in pull-up resistor, and pre- Leave the CPU welding position, very suitable for secondary development of various sensor-related applications.

Using 24-bit high-precision A/D converter chip HX711 is specially designed for high-precision electronic scales.

It has two analog channel inputs, and the internal integrated 128 times gain can programming amplifier.

The input circuit can be configured to provide bridge voltage (such as pressure, load) sensor mode, which is an ideal high-precision, low-cost sampling front-end module

Red Board

●With metal shield, strong anti-interference, reserved cpu (STC1
5F104) position, you can upgrade the secondary development by yourself.
Two-way selectable differential input 98.(On-chip low noise programmable amplifier with selectable gain of 32, 64 and 128
The on-chip voltage regulator circuit can directly connect to external sensors and chips
On-chip A/D converter provides power
The on-chip clock oscillator does not require any external devices, it must be External crystal oscillator or clock can also be used if necessary
●Power-on automatic reset circuit
●Simple digital control and serial communication: all control
Input by pin, on-chip registers do not need to be programmed
●Selectable 10Hz or 80Hzo output data rate
Simultaneous suppression of 50Hz and 60Hz power disturbances
●Power consumption (including regulated power supply circuit)
Typical operating current: < 1. 7mA, power-off current:
<1μA
●Operating voltage range: 2.6 ~ 5. 5V
●Operating temperature range: -20 ~ +85°C

Green Board
This module adopts a 24-bit high-precision A/D converter chip hx711, which is specially designed for high-precision electronic scales.

It has two analog channel inputs and integrates a 128-time gain programmable amplifier.

The input circuit can be configured as a bridge type (such as pressure, weighing) sensor mode that provides bridge voltage, which is an ideal high-precision, low-cost sampling front-end module;

Blue Board

AB dual channel design, each channel has 2 working modes
It can be chosen by customers to meet the needs of different users.
Default baud rate: 9600bps... parity bit: no stop bit: 1 bit
Total length of the protocol: 40 bytes
●Volume: length 3. 3cm*width 2cm*height 0.3cm.
The new increase 47uf black large capacitance tantalum capacitor, stable
Sex has improved significantly.
(built-in single-chip microcomputer, tare, calibration and other N instruction control,
Powerful. Save low-level development time.
●HX711 in-chip voltage regulator circuit can directly apply pressure to the external
The force sensor provides power.
●Simple serial communication, can connect TTL to USB
Brain for data transmission, very convenient, 50Hz and 60Hz power interference.
The power consumption is very small, the typical working current is 12mA.
●Operating voltage range: DC457~5.5V.
●Operating temperature range: -20 °C, +85 °C

Weighing electronic scale module digital tube display (excluding HX711 module)
①: This board is an integrated module of the pressure sensor test board.
There is no relevant information such as drawings and procedures. please don't tell us request.

This is just a pressure sensor test board or It's called a pressure sensor display.
②: The module is designed for wide voltage, and the power supply range is DC 3~5.5V.

There are 2 power supply methods. USB cable powered or
Wiring by yourself (leave the interface)

Purple Board

Two optional differential inputs On-chip low noise programmable amplifier with selectable gain of 64 and 128.

On-chip voltage regulator circuit can directly supply external sensor and chip
On-chip A/D converter provides power
The on-chip clock oscillator does not require any external devices, it must be
External crystal oscillator or clock can also be used if necessary
●Power-on automatic reset circuit
Simple digital control and serial communication: all controls
Input by pin, on-chip registers do not need to be programmed
Selectable output data rate of 10Hz or 80Hz
Simultaneously suppress 50Hz and 60Hz2 power supply interference 9 in Power consumption (including regulated power supply circuit) 2: typical job
Current: ( 1. 7mA. Power off current: < 1 μA
Operating voltage range: 2.6 $5.5V
Operating temperature range:- -20+85°C
16-pin S0P-16 package