My oscilloscope will be build in a Hammond 1455K1201. More later.
Thank you very much for your commnets.Oh - I am allready using a soundcard and Windows 10 app for the job.B U T ......I am facinated by the the Arduino concept. I use the Arduino for small monitors on the test equipments - which is the application for me of your Oscilloscop.Thats why a spectrumanalyzer will be of interest.I have the knowledge to make a really usefull design out of Arduino.I my daily works these small OLED monitors are so usefull.Frede(Living in Denmark)
I am building your exelent project right now.One questionHave you considered to design a spectrum analyzer?Measuring the spectrum of freq. up to 20kHzPerhaps measuring distortion and signal to noise of a sine signal.
Solved !I have solved the challange.ATtiny85 - OLED 96x128 (1306 display) - 2xINA219I have used the Tiny4kOLED and TinyWireM libraries.ATtiny85 storage use: 6985b / 85% - 145b / 28%
Ok, yes - I actually allready ordered the INA3221 but I have not received it yet. So the INA3221 only needs one I2C address? and if yes - your drivers for ATtiny85 can be used?
I found this information re. INA3221:"That module doesn't bring out the 3 pairs of sense pins separately, it cannot be used as a high-sidecurrent sensor, only low-side. Ground is used as the return for all channels."And the INA3221 is not possible for my project. (sad :( )
Yes of course.The application:A DC powersupply delivering 0 to 12V positive and negative with a common ground. This is for my daily work developing small modules for my own test equipment.I woild like to be able to monitor the current in the positive part of the powersupply and the negative part of the power supply.I also like to monitor the output voltage.All of this can be done with two INA219. Actually I have the system running now on Arduino UNO. everything is fully working as I intend.I also have your application running with one INA219 and ATtiny85 - great.But it would be an elegant solution with two INA219 and ATtiny85. This could be a very nice little monitor module. :)
Thank you very much for replying. I am looking for the very nice solution of ATtiny85 and 2 x INA219 for a monitor for a powersupply 0 -> +/- 12 V dc.monitor for the current in each line (positive and negative) and voltage monitor.Monitoring on OLED 1306 display.Your tailor made project supports all but one more INA219.Therefore I hoped for a changed / updated tailor made INA219 lib for addressing 2 INA219.Do you have any plans to make this possible in the future?