ESP8266 Community Forum

- Thu May 30, 2019 1:47 pm #82566 I had the problem, and i was trying to do the same thing, i found that in the SSD1306Wire.h, in the connect() function, the Wire Clcock is set to 700khz Wire.setClock(700000); if you comment that line it should work fine.

- Tue Dec 31, 2019 5:14 am #85114 Hi,

I use ESP8266-12E board, but only 3 I/O port pin already free.
But I would like yet use INA219, DHT22, HX711 and DS18B20 sensors on one I2C bus.
Is possible on one I2C bus ?
Can you help me ?

Thanks.

zsolt

- Thu Feb 06, 2020 6:15 am #85562

Can you help me ?

YUP!
From a quick look at datasheets all these devices have a different interface. only the INA219 has a i2c interface.

- Wed Aug 19, 2020 12:50 pm #88384 Hi. I am new here.
I want to connect ESP12E as master communicate i2c with Arduino Uno as slave and i2c with OLED 0.96.

But I can only connect 2 of them each time. Either ESP with OLED or ESP with UNO. Any idea how I can do this? I want to capture data with UNO and send to ESP( and other calculation) and display values.

Any help will be very much helpful. Thanks in advance.