I have a weight scale (only the sensor) connected to an INA125P to measure money, and to my Arduino analog pin 0.
I followed this tutorial: http://www.instructables.com/id/Arduino-Load-Cell-Scale/
The good news is that it is working! I can put a dollar note on the scale and it will give me a good reading. However, I have a question about weighing coins as well. The scale should read like 100 coins, but the scale of the analog system seems to be only small enough to take in like 10 coins. After that it goes off the scale.
* The analog number ranges from 422 (me not touching it) to 900 (me pressing down on it)
Can anyone recommend any suggestions? I have thought of the following ideas if someone could share some light that would be great:
1. Chanding the 10hm resistor when counting coins on the INA125P
2. I heard that the Ardunio has some software syntax that you can change analog inputs, but I'm not sure about that.
Also, can anyone recommend how to stop ripples in the weight system? For example, the reading I get is:
421..422, 425, 421, 421, 421, 423
Any suggestions would be appreciated.