SLAA220A November   2004  – August 2018 MSP430F423 , MSP430F423 , MSP430F423A , MSP430F423A , MSP430F425 , MSP430F425 , MSP430F425A , MSP430F425A , MSP430F427 , MSP430F427 , MSP430F427A , MSP430F427A

 

  1.   MSP430F42xA Single-Chip Weight Scale
    1.     Trademarks
    2. 1 Introduction
    3. 2 Hardware Description
    4. 3 Software Description
    5. 4 Application Schematic
    6. 5 References
  2.   Revision History

MSP430F42xA Single-Chip Weight Scale

This application report describes how to implement a single-chip pocket weight scale using a resistive full-bridge sensor and a fully integrated MCU solution using low-power design practices. The included software obtains the measurement results using the MSP430™ on-chip sigma-delta analog-to-digital converter (ADC) and displays them on an LCD. A 3-V battery powers the portable device. The design includes a two-point calibration mechanism for offset and gain calibration. The sample code described in this document can be downloaded from www.ti.com/lit/zip/SLAA220.