vincent asked 4 years ago
Hello i have 2 Boards like this https://randomnerdtutorials.com/ttgo-lora32-sx1276-arduino-ide/ The Chip on it is ESP32-D0WDQ6 | 042019 | UB00PKUK57 on the Pinout overview on the left down is Pin 21 SDA and on the right in the middle Pin 22 witch SCLon this SDA/SCL are connected aSparkFun LiPo Battery Manager – Battery Babysitterconnected like SDA -> SDA and SCL to SCLdo i have to activate on my ESP32 this pin somehow? or should this be useable? have a nice day vinc
Sara Santos Staff answered 4 years ago
Hi.
As those are the ESP32 default I2C pins, there should be no need to “activate” the pins.
However, you need to check if you need to pass any SDA and SCL parameters on the library you’re using for the Battery Manager.
Regards,
Sara
vincent answered 4 years ago
ok Thank you
i did not find a information about that in
https://learn.sparkfun.com/tutorials/battery-babysitter-hookup-guide
have a nice day
vinc
Sara Santos Staff answered 4 years ago
Hi.
It uses the default I2C pins.
See line 38: https://github.com/sparkfun/SparkFun_BQ27441_Arduino_Library/blob/master/src/SparkFunBQ27441.cpp
It uses Wire.begin() –> default I2C pins
Regards,
Sara
vincent answered 4 years ago
Hello Sara
thanks for your feedback, it helps at least it helps i have not done something wrong!
Another question same
as i did it right with my Pin on the TTGO
so also the Power is correct pins?!
Do i have to config something spezial to power it over the PINS?
What will happen it Power is connected over the PINS and also on the USB to conect it to the Computer USB?
have a nice day
Vinc
Sara Santos Staff answered 4 years ago
Hi.
You don’t have to configure anything on the code to use the power pins.
If the board is powered through USB, you SHOULD NOT connect another power source to the power pins. If the board is powered through USB, the power pins output 3.3V or 5V depending on the power pin.
Tell me if this answers your question.
Regards,
Sara