Hello
I have a circuit that uses an esp32, some external sensors (ie, temp, moisture) and an RTC (I2C) connected via an I2C splitter.
All is good, but when I add an INA219 to the splitter, the RTC no longer functions correctly.
If I load an I2C tool code, the RTC address is listed (0x68), but when I connect the INA219 data (SDA) pin, the tool then does not list the expected address (0x40) and in fact shows 'no I2C devices'.
I've rechecked wiring so now not sure what could be the issue.
INA219 connection issue
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Please be positive and constructive with your questions and comments.
- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: INA219 connection issue
Post a photo showing your hardware and connections and we'll take a look. 800x600 images usually work best.
- jax200
- Posts: 16
- Joined: Sat Dec 17, 2011 7:48 pm
Re: INA219 connection issue
I found when using an esp32 it required adding pullup resistors. All good now.
- adafruit_support_mike
- Posts: 67454
- Joined: Thu Feb 11, 2010 2:51 pm
Re: INA219 connection issue
Ah.. yeah, that's a gotcha. Glad to hear you got it working!
Please be positive and constructive with your questions and comments.