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Artículo: AMZ-B079LVMC6X
SparkFun
SparkFun Load Cell Amplifier - HX711 Small Breakout Board Read Load Cells to Measure Weight Four-Wire Wheatstone Bridge Configuration Connect to sensors Build Scale Process Control Presence Detection
Detalles del producto
Disponibilidad
En stock
En stock
Peso con empaque
0.20 kg
0.20 kg
Devolución
Sí
Sí
Condición
Nuevo
Nuevo
Producto de
Amazon
Amazon
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USA
USA
Sobre este producto
- The SparkFun Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight. By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell, and with some calibration you’ll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control or simple presence detection. This version of the SparkFun Load Cell Amplifier features a few changes that you specifically asked for! We have separated the analog and digital supply, as well as added a 3.3uH inductor and a 0.1uF filter capacitor for digital supply. The HX711 uses a two-wire interface (Clock and Data) for communication. Any microcontroller’s GPIO pins should work, and numerous libraries have been written, making it easy to read data from the HX711. Check the hookup guide below for more information. Load cells use a four-wire Wheatstone bridge configuration to connect to the HX711. These are commonly colored RED, BLK, WHT, GRN and YLW. Each color corresponds to the conventional color coding of load cells: Red (Excitation+ or VCC) Black (Excitation- or GND) White (Amplifier+, Signal+ or Output+) Green (A-, S- or O-) Yellow (Shield) The YLW pin acts as an optional input that is not hooked up to the strain gauge but is utilized to ground and shield against outside EMI (electromagnetic interference). Please keep in mind that some load cells might have slight variations in color coding.
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$32,74
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$16,79
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HX711 IC: Weight items accurately; Note: Some calibration required Separated analog and digital supply: VCC analog voltage to power the load cell; VDD digital supply voltage used to set the logic level Two-wire interface (Clock and Data): communication with a microcontroller GPIO pins; Numerous libraries written: for easy-to-read data from the HX711 Operation Voltage: 2.7V--5V: Allows wide range of microcontroller compatibility; Operation Current: < 1.5mA Connect using Wheatstone bridge configuration: Mostly standard Four-wire connection to load cells; Selectable 10SPS or 80SPS output data rate; Simultaneous 50 and 60Hz supply rejection
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