I would like to build an Ardrino unit to accurately measure small weights, specifically bullet reloading components such as projectiles and gunpowder.
So in the first instance as a learning thing I want to detect what is known as a squib round. So the completed round of ammunition weighs about 300grains (1 grain = 0.0647 grammes) or about 20 grammes. If the loaded round is a "squib" it will be missing the 45grains of gunpowder so only weigh 255grains (16.5grammes) I have been looking for a sensor to use for this to no avail, any ideas please?
In the second job I want to be able to dump 1000 projectiles into a hopper and have the ardrino separate them out by weight into batches. The nominal weight would be anything from 50grains to 230grains. (3grammes to 16 grammes). It maybe I need a second, finer sensor for this job.