Nanoshield_LoadCell

This is an Arduino library to measure weight using load cells and the ADS1230 IC from Texas Instruments.

• Source code: https://github.com/circuitar/Nanoshield_LoadCell
• Documentation: http://nanoshield-loadcell.readthedocs.org/
• Reference board: LoadCell Nanoshield from Circuitar

Library features include:

• Conversion to weight units, based on load cell capacity and sensitivity
• Moving average filter, with configurable number of samples
• Set zero weight point (tare)
• Get measurement in weight units or raw 20-bit value
• Continuous sampling using hardware timer (Timer 2)
• ADS1230 offset calibration

Note: this library uses Timer 2 on the ATmega microcontroller, or Timer 5 on ATmega2560 and ATmega1280. On ATmega168 and ATmega328 (i.e. Arduino UNO or similar), usage of this library will interfere with the tone() function.

To install, just click Download ZIP and install it using Sketch > Include Library... > Add .ZIP Library in the Arduino IDE.

The following examples_ are provided:

• ReadWeight_ shows how to do a simple weight measurement using a load cell.
• LcdDigitalWeightScale_ a digital weight scale using a load cell and an LCD display.
• MultiWeight_ shows how to read more than one weight using multiple load cells.
• ReadRawValue_ reads the raw 20-bit integer value from the ADS1230 IC.
• ReadWeightNoAveraging_ reads weight without averaging (default is to average the last 10 samples).
• ReadWeightLowGain_ uses low gain to measure a wider weight range.
• OffsetCalibration_ shows how to use offset calibration.

.. _LoadCell Nanoshield: https://www.circuitar.com.br/nanoshields/modulos/load-cell/ .. _Circuitar: https://www.circuitar.com.br/ .. _examples: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/ .. _ReadWeight: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/ReadWeight/ReadWeight.ino .. _LcdDigitalWeightScale: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/LcdDigitalWeightScale/LcdDigitalWeightScale.ino .. _MultiWeight: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/MultiWeight/MultiWeight.ino .. _ReadRawValue: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/ReadRawValue/ReadRawValue.ino .. _ReadWeightNoAveraging: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/ReadWeightNoAveraging/ReadWeightNoAveraging.ino .. _ReadWeightLowGain: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/ReadWeightLowGain/ReadWeightLowGain.ino .. _OffsetCalibration: https://github.com/circuitar/Nanoshield_LoadCell/blob/master/examples/OffsetCalibration/OffsetCalibration.ino

Copyright (c) 2015 Circuitar All rights reserved.

This software is released under an MIT license. See the attached LICENSE file for details.