I wanted to open source it anyways. But only after completing it. Now it seems I can't complete it. There is a lot of maths and timing problems that I can't do. Only the led and diode and resistor testing part works but that too needs user to calculate stuff on a sheet of paper.
Now i'm like. Here's the schematic, here's the idea. complete it and it'll be yours to reap benefit from.
I don't even know if someone has already done it.
So here's the concept-
it's like a curve tracer.
a,b,c are the pins of a microcontroller,like attiny85
pin a,b alternate between 5v,0v and 0v,5v for all components (except for polorized capacitor) respectively at certain speed
the arrows are probes.
the characteristics of the device are determined by making multiple readings at pin c, thus essentially turning the resistor at pin b, into a current shunt.
a little math is used to see what kind and value of component will consume current in manner the device is consuming.
the result is sent to another device like an oled, using the remaining pins of microcontroller.
The hardness tester concept is as follows-
We have a tube,transparent to IR.
to it,we affix 2 ir source and receiver that will send signal when ball passes in-front of them,
We place it on an object who's hardness we want to test.
We drop a bearing ball into it.
We record, at what speed it was, just before it hit the surface.
after it hits, and bounces back up, we record the speed it went upwards.
Some brainwrecking physics later, we get to know the hardness of the object.