Quad Alphanumeric Display displaying gibberish

Other Hardware Displays
1

Hello, I am working a project to make a scale using a strain sensor.

I have everything connected, soldered as outlined in the guide but the displays do not display as expected. They just display nonsense.
Is there another library I need to use for these displays. Does anyone have any ideas?

IMG_7130
IMG_7130480×640 124 KB

2

Not enough information in your post. Could be bad soldering, bad connections or a wiring error.

You are more likely to get informed help on the Adafruit forum.

3

The displays are I2C, connected to the same controller. They have the same data on them (displaying the same thing). Have you checked their address?

Alphanumeric Display I2C Jumpers
    Alphanumeric display 1 (on the left): A0, A1 and A2 open (0x70)
    Alphanumeric display 2 (on the right): A0 closed, A1 and A2 open (0x71)

projects_nau7802_scale_fritzing_bb
projects_nau7802_scale_fritzing_bb800×608 106 KB

4

Thanks, Yes I am getting all the correct addresses after soldering A0,
I think that I might be missing software.
The Sparkfun Displays are not the exact same the displays in the project.

These are my current imports

import time
import board
from digitalio import DigitalInOut, Direction, Pull
from adafruit_ht16k33.segments import Seg14x4
from cedargrove_nau7802 import NAU7802
from calibration import calibration

Is there something else I need to add to make this one work?

I found this

but I am I am not sure if this is what I need or how to install it. I am using circup to push files to the ESP32-S2

5

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