• Testing measurement

    Victor • 03/08/2018 at 18:35 • 0 comments

    Built a simple circuit for testing. 4.7K resistor with known voltage

    3.26V / 4700 Ohm = 7e-4 A = 0.7 mA

    That what I see at the graph. So I can trust to measurements. Still some deviations here. Around 0.1 mA.

  • Measuring

    Victor • 03/07/2018 at 21:04 • 0 comments

    Measuring. X-axis is in milliseconds

    Current going to negative values also. Very strange.

    Useful libraries:

    Python library for INA219

    https://github.com/chrisb2/pi_ina219

    I will share my code soon

  • Raspberry Pi has a home

    Victor • 03/06/2018 at 18:38 • 0 comments

    Using case and extension board from my old project. Extension board has i2c output. Connected INA219. Now it's time for coding