SparkFun Load Cell Amplifier – HX711



  • SparkFun
Availability: Low Stock - Only 1 Remaining


SKU: SEN-086 Manufacturer: SparkFun Mfg Part Number: SEN-13879 Categories: , Tags: , , ,


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 load cell amplifier 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 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.



  • Operation Voltage: 2.7V-5V
  • Selectable 10SPS or 80SPS output data rate
  • Operation Current: < 1.5mA
  • Simultaneous 50 and 60Hz supply rejection




May We Also Suggest…

40 Pin Breakaway Male Header – Standard
Price: $0.95
Load Cell – 10kg, Straight Bar (TAL220)
Price: $9.95
Load Cell – 1kg, Straight Bar (YZC-131)
Price: $7.00
Load Cell – 20kg, Straight Bar
Price: $12.95


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Intermediate
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 4 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


There are no comments yet.

Be the first to comment on “SparkFun Load Cell Amplifier – HX711”

Your email address will not be published. Required fields are marked *