Wiring of BMP180 ?
Posted: 19 Aug 2017, 09:55
Hi
I bought these modules https://www.aliexpress.com/item/15969-F ... 8e01df20d4 but forgot to check if there were 3.3V or 5V: I have wired it on GPIO-4 (D2), GPIO-5 (D1) and also powered in 3.3V, it's declared as device in Devices tab but I have no vajue showing up in Web interface of ESP !!
I have read that pins of ESP are not 5V compatible but sensor being in I2C I guess there is no harm to power sensor board in 5V no ? as I2C are standard levels not depending of Power supply voltage on electronic right ?
Thanks for clarification
Vincèn
I bought these modules https://www.aliexpress.com/item/15969-F ... 8e01df20d4 but forgot to check if there were 3.3V or 5V: I have wired it on GPIO-4 (D2), GPIO-5 (D1) and also powered in 3.3V, it's declared as device in Devices tab but I have no vajue showing up in Web interface of ESP !!
I have read that pins of ESP are not 5V compatible but sensor being in I2C I guess there is no harm to power sensor board in 5V no ? as I2C are standard levels not depending of Power supply voltage on electronic right ?
Thanks for clarification
Vincèn