Cheap high tech for home modders

[andyvh1959]

Some of us like to try and mix parts from other Kawwy models, maybe from other bikes and brands. These days that can require getting to know what signals you get or need to get components working. Decades past that meant you had to be a television techy with an oscilliscope. An oscilliscope is a very expensive electronic device that can see and analyze the signals generated by electronic devices.

But, these days we hold amazing power in our pocket (not THAT), our smart phone. And there are apps for turning your smart phone into an oscilliscope! I got to thinking about this because of apps to use your phone as a sound meter. The phone takes the input from the microphone and a sound meter app produces the waveforms relative to the sound input. Some persons much smarter than me took that steps further, using an input jack from a old set of headphones (the four segment jack), two resistors with a ratio of 1:10 between them, and a downloaded oscilliscope app and your smart phone now becomes an electronic analysis tool. Way cool for us home techies:



Here is a guy testing the wheel speed sensor on a car:



Here is one that includes an adjustable range controller:



In the case of, say, trying to match the speed sensor output from a VN1600 to the input required to using a VN1700 speedometer, this device will let you "see" the magnitude and frequency of the speed sensor output and determine if it is correct or can be modified as needed.

[mbarr10]

Cool, I would like to use this for tuning an amp. I am just not tecky enough for that though.

[Kawi_addict]

I feel like this is directed at me to make me get serious withy build �� amazing how phones have become super computers

[andyvh1959]

They gotta be good for something!

I just loaded a new app on my phone, it allows me to call people!

[Kawi_addict]

I want to get one of those apps! Is there one you recommend

[andyvh1959]

Probably any one of the ones listed in the youtube vids above. I don't have it loaded to my phone yet, but I eventually will.

[Sabre-t]

Personally, I would buy a cheap oscilloscope or mulit-meter with a built in oscilloscope (lots of options for less than $100) rather than risk destroying my expensive smart phone.

https://www.amazon.com/Oscilloscope-Multimeter-LIUMY-Professional-Automatic/dp/B08832JX4H/ref=sr_1_5?dchild=1&keywords=Cheap+Oscilloscope&qi d=1611167390&sr=8-5

or

https://www.amazon.com/STARTO-Pocket-Size-Oscilloscope-Protective-Assembled/dp/B07QT81M92/ref=sr_1_11?dchild=1&keywords=Cheap+Oscilloscope&q id=1611167390&sr=8-11

and a $15 10X probe

[andyvh1959]

True. But how many of us have a left over older smart phone we no longer use? I do, so it can be put into service in my shop this way.

[Sabre-t]

Originally Posted by andyvh1959

True. But how many of us have a left over older smart phone we no longer use? I do, so it can be put into service in my shop this way.

I guess I'm just cheap. My previous smart phone is so old, the latest version of Android it will run is too old to support apps like that!

[Kawi_addict]

I have an old smart phone and an old galaxy tablet that will both run those apps so I want to try it once Andy has done it so I gave a reference to go off of. I work too much and have too many little kids in my house to give this project the time it deserves