[The_Boss]

Hi i am building a dash for my R1 how do i convert ie o2 147 to 14.70 for my nextion i can read the val and print on lcd but want to get 14.70 not 147 please help thanx

[NickZ]

Im stuck on that one too.

[dazq]

With the value saved in a float variable, if you divide by 10 then the variable should now hold 14.7 or is that not what you meant?

[NickZ]

The Nextion doesn't like displaying Decimals.

[dazq]

Ah I see, I have this fun to come yet
Did the other chap in the nextion thread manage to do it?

I thought it was an odd request

[NickZ]

i think so, it is possible just need extra code and ive been too lazy to search it up. My dash is all up and working but im having trouble with one of my cars, so thats taking all my time.
It would be great to get the serial on the teensy working so i can use my dash on my current project:)

[ric355]

Hi i am building a dash for my R1 how do i convert ie o2 147 to 14.70 for my nextion i can read the val and print on lcd but want to get 14.70 not 147 please help thanx

If, as NickZ says, the Nextion doesn't like displaying floating point numbers then the solution is probably to convert the number to a string and then use a text field instead of a numeric field on the display. I know nothing about this device as I've never used it but that would be what I'd try if it doesn't like handling floating point numbers.

[The_Boss]

Thanx all will keep trying i am not a coder at all but copy and paste help alot

[NickZ]

Yes thats it, convert to a string and use a text field, i did try this some time ago but couldn't work it out.

[dazq]

i have been trying that issue on the simulator and this works ok.
use this in your arduino code

Serial2.print("afr.txt=");
Serial2.write(0x22);
Serial2.print(afr/10.0);
Serial2.write(0x22);
Serial2.write(0xff);
Serial2.write(0xff);
Serial2.write(0xff);

make the afr object a text object. for example a afr value of 147 this will show 14.7