How can i make a digital weighing scale?
The short answer, is you need a force sensor of some kind, an analog to digital converter, a microcontroller, and some kind of digital readout. Connect them all together using the data sheets that came with each as a guide, and then program the microcontroller to take readings from the sensor and drive the readout. The long answer probably will not fit in a Yahoo! answer. If you have never programmed a microcontroller before, there are books and on-line tutorials, and maybe classes that you can take at your local college. Oh, and, you’ll need to calibrate it of course. Use a set of known weights for that. Also, I would suggest that for a sensor, you might want a strain guage applied to a metal beam that flexes under the sample weight. And, um, there are some tricks to suspending the weighing platform in such a way that the same force will give the same readout no matter where it is applied to the surface of the platform. If you know some physics (statics), and you spend some time takin
