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AirGradient Forum

DIY Mini Display directly on PCB

Components
#1

Hi everyone,

yesterday I finished my first DIY Air quality sensor with the air gradient PCB. First of all thanks a lot for providing these nice PCBs!

I also build the DIY Mini Display.

Now I’m wondering how I could use the Mini Display directly on the PCB instead of the small OLED Shield.
Can someone give me advice how to change the code to make it work? I want to have a sensor with big display, but I also want to take it along with a power bank as Batterie source. The mini Display only works with wifi, so it’s not convenient on the go.

As I have absolutely zero coding skill, I have to rely on this awesome community!

Thanks a lot in advance!

Marcel

#2

there is no requirement for Wifi to be enabled. It’s only required if you want your metrics to be stored somewhere for viewing trends.

#3

The mini Display is not the mini OLED on the board. I’m talking about this:

This only works with WiFi, otherwise it cannot obtain the data, as it is only a D1 plus Display.
in addition, the small display on the sensor unit has to be set to wifi to work with this display in the link. no wifi, no data…

#4

Well, that’s different.

I don’t think the pins would be available on the board with sensors, as they are used for the sensors… I could be wrong though.

#5

@mazzel the color LCD display uses SPI for data connection that needs I think 6 pins for connection. There are not enough pins left with all the sensor modules so I think this will not work.

You can google i2c and SPI connection to learn more.

#6

ok, got it! I searched a little bit if I can use the Display with the I2C protocol, but seems not possible.

what bigger display have you tested with this setup?

thanks a lot :slight_smile:

#7

I’m unaware of any full color TFT displays that use I2C