It is an arduino board and HX711 module electronic weighing machines, I'm using a 5KG weighing module with HX711 circuit, a reset button, a liquid crystal display 1602, a Arduino controller (using dfrobot DFR0282 Beetle controller). Housing parts using a 3D printer, via Micro USB interface to an external power supply Program uses https://github.com/bogde/HX711 and http://www.dfrobot.com/wiki/index.php?title=I2C/TWI_LCD1602_Module_(SKU:_DFR0063) Program is here https://github.com/xiaoyao9184/XYArduino/blob/master/HX711_LCD/HX711_LCD/HX711_LCD.ino