Based on the Arduino Uno and an LCD shield, an application of http://www.thingiverse.com/thing:845415 , this design is a weight display for load cells (using strain gauges). As interface, I use the HX711, which is a 24-bit AD converter made for the purpose.
The HX711 are available on inexpensive small interface boards like this one: http://www.banggood.com/HX711-Weighing-Pressure-Sensor-24-Bit-Precision-AD-Module-For-Arduino-p-918228.html
The design has room for two HX711 boards, i.e. supporting two cells. It runs on a 9V battery which also fits in the case.
A library for the HX711 is available here: https://github.com/bogde/HX711 To install, download the zip file and add as library in the Arduino IDE.
I have included a very simple piece of Arduino code to implement a basic weight display.
| arduino_uno_lcd.scad | 17.0KB | |
| arduino_uno_lcd_button.stl | 62.6KB | |
| arduino_uno_lcd_extra_bottom.stl | 591.9KB | |
| arduino_uno_lcd_extra_top.stl | 766.6KB | |
| weight_display.ino | 1.0KB |
