LCD not showing display

Projects General Guidance
1

i am trying to angle measure by mpu6050

but lcd is blank

please need guide

thank you

2

Try adjusting the contrast pot. The little blue square component on the I2C backpack.

LCD
LCD1600×1200 309 KB

3

first thing.. power down, get some electrical tape..
you gonna make smoke.. :frowning:

~q

1 Like
4

how can i do this ?

5

its not moving either clockwise or anti clockwise

6

Do what? Adjust the contrast pot or insulate those bare wires?

To adjust the contrast pot, use a small screwdriver or similar instrument to turn the slotted bit in the center of the pot while observing the display. Text or blocks should appear. Keep adjusting till you can clearly see the blocks or text.

1 Like
7

got it thank you
does the connection and code is fine?

8

I cannot tell if the connections are good by the photos. I cannot see where all of the wires go. If you draw a schematic or wiring diagram it would be more useful. Draw the schematic by hand, photograph and post it is fine.

In the interest of getting the display to work I would recommend that you forget about your code for the moment and run the "Hello World" example from the LCD library that you have installed.

2 Likes
10

The diagram looks correct.

1 Like
11

Weixin Image_20230617220151
Weixin Image_202306172201511280×1704 385 KB

HEello word not coming , i install libraries

12

here's your project simmed..
UNO_LCD_MPU
had to change LCD address to get sim working..

good luck.. ~q

1 Like
13

thank you very very much going to try this

but this hello word not coming to check display

14

try to adjust final limit this appear

Weixin Image_20230617221407
Weixin Image_202306172214071280×1704 315 KB

15

So adjusting the contrast had no effect? The display should show the blocks with just the power connected (SDA and SCL not connected at all). If the blocks are not showing and the contrast has been adjusted end to end the LCD is probably dead.

image
image1920×971 104 KB

LCD with only power connected, SDA and SCL disconnected

Until you see the blocks there is no use trying any programs.

1 Like
16

:frowning: :frowning: :frowning: :frowning: :frowning: i will ask that shop about this

17

sa
sa1280×1704 206 KB

sv
sv1280×1704 241 KB

i have this also please can you tell how to make connection now no SDA and SCL

18

That display is missing the I2C backpack. You could buy one and solder it in place. Or you could solder a header to the LCD and wire and use it in the 4 bit (or 8 bit) parallel mode.

1 Like
19

cvd
cvd1080×1920 234 KB

i can see little little , now fix little move box .Thank you very very very much

20

You are very very welcome. Glad to be of help.

What did you do to make it work? It may help the person that finds this thread on the future.

Does that mean the potentiometer (pot)?

1 Like
21

OK...now back it off a bit as you have turned the pot too far.

1 Like