Differences in i2c between esp8266 and esp07?

Other Hardware General Electronics
1

Hello i am in kind of a server conundrum the kind that make you go crazy and make you question your life choices taking up electrical engineering.

anyways is anyone aware of any differences in wiring with i2c between the standard nodemcu style esp 8266 and the bare esp07 chip? (they are both esp8266 but with different board)
particularly with the location of sda and scl pins?
ive checked both pinout sheets and havent seen anything notable when i upload my code to the nodemcu it works fine,when i use my esp with the programer in the same pins it works but when i put it on my pcb board ive printed nothing works ive checked my traces could anyone point me to a few avenues that i may have over looked when trying to figure out the issues? its not a power issues before thats brought up.

thanks in advance

2

But no-one else has. :thinking:

3

There are many ESP modules, but the ESP-12 has AFAIK the same pinout as the ESP-07.
I have used both on the same board I designed.
ESP-12E
ESP-12F (improved aerial trace)
ESP-07 (chip aerial and external aerial connector)
ESP-07S (only external connector)

The ESP8266 module has no hardware I2C on fixed pins. Almost any pin can be used.
The preferred pins are mentioned in the datasheet. I have used
Wire.begin(2, 14); // SDA = GPIO 2 and SCL = GPIO 14
Leo..

4

True i can upload a screen shot here shortly