20pcs HX711 Dual-channel 24-bit A/D Conversion Pressure Weighing Sensor Module with Metal Shied

Features Two selectable differential input channels On chip active low noise PGA with selectable gain of 32 64 and 128 On chip power supply regulator for load cell and ADC analog power supply On chip oscillator requires no external component with optional external crystal On chip power on reset Simple digital control and serial interface pin driven controls no programming needed Selectable 10SPS or 80SPS output data rate Simultaneous 50 and 60Hz supply rejection Specifications Current consumption including on chip analog power supply regulator normal operation1 5mA power down1uAOperation supply voltage range 2 6 5 5VOperation temperature range 40 85Size 2 9x 1 7x0 4 cmMore document click to download HX711 Module Detection Method 1 Preliminary quick judgment disconnect all modules of the module only supply the module 5v that is vcc is connected to 5v gnd ground then short the modules ck port to ground and then measure the out to ground voltage which should be 4 5 v around then measure the DO RX port to ground voltage should be about 0v if the voltage is consistent the module is 99 normal 2 Complete test judgment use the test circuit diagram provided by the shop to build a circuit give the 89c51 single chip computer into the hex test program provided by the store then connect the computer with the serial cable run the serial port assistant on the computer you can receive the test circuit The reading is reported and the rea