ESP32 with I2C OLED and Temperature Sensor

How easy is it to get a 128x64 OLED and a Si7021 temperature and humidity sensor working with the ESP32?

Interested in my new garden workshop? Follow the entire build on Julian's Shednanigans:

(We each get £50)

#ElectronicsCreators

[DustinWatts]

#include <> searches for the library in your library folders and #include "" first looks in the sketch folder. So basically the difference between local and global include.

[PetRatty]

glad you've moved onto the esp chips, to get upto date use the new esp32-s3.

[MarkMAK]

Nice to see a video on you using the ESP32 👍
I look forward to seeing your next video on this 😉

[dogastus]

I'm so pleased you're trying the ESP32. I asked if you might quite a few months ago so nice to see my wish coming true!

[postiemania]

I just ordered a few of these, some with cameras today. Lo and behold Julian makes an Esp32 video == compelled to watch as this is almost the identical project I am building.
Thanks Julian you have saved me some time.

[Magic-Smoke]

Hi Julian, for what its worth, you can use almost any pin to drive I2C. You may have to declare those pins when you call your driver library though

[km]

i designed my own esp32 board with battery management built in for wearable sensor interfaces and sensor projects :-) esp32 module is very cheap and powerfull

[grahameida]

All my esp32 sensors report back to a MQTT server, gives you loads of flexibility for control and logging.
Look up the IOTstack for the raspberry pi, very easy to set up

[ShawankumarParida]

Is it possible to connect two oled displays to esp 32 and display different data on screen

[jumadhaheri]

You can use ESPnow for point to point (not WiFi)

[TheDefpom]

To make programming the ESP32 easier, install a 1uF cap between the Enable and Ground pins, this means you don’t need to press the button to program it from the arduino IDE, you just upload and it works.

[austinskylines]

nice, i made one of these with a DHT22 the other week. i hate the cheap esp though.... never is too stable, web server always goes out

[roelskiunplugged]

Next try the inbuilt touch for a few pins!

[jstro-hobbytech]

The arduino ide keeps throwing a max7219 compilation error at me at random. Drives me nuts haha

[roby]

Dude pls tell me... Can i run machine learning in esp32 dev board... That same board... Pls tell.. Which is better arduino 33 ble something or esp32 dev board... Pls reply... Can i run tensorflow lite in esp32 dev board.. What are the basic components need to do a machine learning.. In esp32 dev board

[timothepennec]

Hi, i don't have understand why you change from ATMega 328 to ESP32, for the wifi only ? the identical value for the first screen and the second are the same from the code no ? Or ATmega 328 doesn't have much memory to control the two screen at the same time ? thank you :P

[qzorn]

now to us an esp32 master to read modbus rtu input registers from a panel-meter rs486 19200 and display the value 😎 thanks

[mickeyfilmer]

I'm still trying to get my 62 year old head around arduino code!!

[RottnRobbie]

I don't especially _like_ being that guy, but I am what I am - so I have to ask...
@1:00 - Why does the left display show 90.9 *PERCENT*, while the right display shows 90.9 *VOLTS*?
Sloppy coding perhaps?

And how did nobody else - especially Julian - not notice this?

[fredflintstone]

why not just get the info from the shed on the ESP32??