hello
I have an arduino and a few components to make an inductance meter.
http://hackaday.com/2011/07/24/using-an-arduino-to-measure-inductance/
parts list was small, lm339 two resistors, two capacitors and a diode. copy and paste the code and bobs your uncle, fannies your aunt!
I tried to measure the value of the inductors I have and no luck. I tried a 330uh axial. (maybe this is where I am going wrong).
the frequency used to measure it is 17857hz and for 28u seconds. is this correct.
I know current and frequency are what can affect the inductance.
I have been looking for a way to try and figure out if this is working or not and if I have to adjust the code a little so it comes out closer to the proper value.
is there a way to calculate the value at that frequency?
I just looked on the site and it says that "The output works better with a high current and uses ~33mA at 5V".
i am using electrolytic caps, which were a no-no. i didn't realise this may effect the result in some way. does anyone know how?
cheers
all the best or 73's
simon
I have an arduino and a few components to make an inductance meter.
http://hackaday.com/2011/07/24/using-an-arduino-to-measure-inductance/
parts list was small, lm339 two resistors, two capacitors and a diode. copy and paste the code and bobs your uncle, fannies your aunt!
I tried to measure the value of the inductors I have and no luck. I tried a 330uh axial. (maybe this is where I am going wrong).
the frequency used to measure it is 17857hz and for 28u seconds. is this correct.
I know current and frequency are what can affect the inductance.
I have been looking for a way to try and figure out if this is working or not and if I have to adjust the code a little so it comes out closer to the proper value.
is there a way to calculate the value at that frequency?
I just looked on the site and it says that "The output works better with a high current and uses ~33mA at 5V".
i am using electrolytic caps, which were a no-no. i didn't realise this may effect the result in some way. does anyone know how?
cheers
all the best or 73's
simon