I am working on a small science project, and need assistance with the electronics part.
I have not been succesful finding an appropriate schematics.
It's actually very simple: I want to measure the drop time of different objects through a vertically mounted metallic tube (copper).
The objects will vary from a stone, an ordinary magnet to the strongest possible neodymium magnet.
At the top and end of the tube I want to mount IR-detectors that will respectively start and stop the counter, which result should be shown on a (old-fashioned) LED-display.
The fun part is that the droptime for the neodymium magnet is much longer (6-10x?) than for the other objects, which can be used to demonstrate some scientific principles.
I have some schematics that in part show the direction in which I want to go, but not completely. If someone could modify these?
You can get more detailed info send to your personal email address.
Any help is appreciated!
Ronald Werner
Norway
I have not been succesful finding an appropriate schematics.
It's actually very simple: I want to measure the drop time of different objects through a vertically mounted metallic tube (copper).
The objects will vary from a stone, an ordinary magnet to the strongest possible neodymium magnet.
At the top and end of the tube I want to mount IR-detectors that will respectively start and stop the counter, which result should be shown on a (old-fashioned) LED-display.
The fun part is that the droptime for the neodymium magnet is much longer (6-10x?) than for the other objects, which can be used to demonstrate some scientific principles.
I have some schematics that in part show the direction in which I want to go, but not completely. If someone could modify these?
You can get more detailed info send to your personal email address.
Any help is appreciated!
Ronald Werner
Norway