Hello guys, I use my stm32 F4 board to connect with adafruit ina 260, but Vbus is so high, i have no idea why.
get voltage:10984
get current: 148
get power:: 560
this is also without load, still Vbus is so high, is this module broken?
adafruit ina260 Vbus is too high
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- Tooot
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adafruit ina260 Vbus is too high
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- adafruit_support_bill
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Re: adafruit ina260 Vbus is too high
Your photo does not show all of your connections. Also please post the code you are using.
- Tooot
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Re: adafruit ina260 Vbus is too high
i'm sorry , this is the whole circuit, i measured the Vbus always 11v. i dont understand where this comes from......
Thank you!
Thank you!
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- adafruit_support_bill
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Re: adafruit ina260 Vbus is too high
I don't see a ground connection between the INA260 and the circuit under test. Voltage is measured relative to ground. So without a ground connection to the circuit under test, the voltage readings are meaningless.
- Tooot
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Re: adafruit ina260 Vbus is too high
the white cabel with read red "G", that is ground. also you can see it from 2.png
- adafruit_support_bill
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Re: adafruit ina260 Vbus is too high
That is the ground from your processor to the INA260. The voltage you are trying to measure is on the red board and you do not have a ground connection to it.
- Tooot
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Re: adafruit ina260 Vbus is too high
thank you so much for help, i did it!!! thank you again!
- adafruit_support_bill
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Re: adafruit ina260 Vbus is too high
Good to hear. Thanks for the follow-up.
Please be positive and constructive with your questions and comments.