Installation & Troubleshooting
Code Failing to upload on a (official) Uno
Topic: Code Failing to upload on a (official) Uno
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? < This is a question. Try to answer
Re: Code Failing to upload on a (official) Uno
Aug 02, 2019, 01:23 am
SO you are saying your LCD does not work ?
Check the schematic carefully against your LCD screen wiring.
They are pretty much all the same but there are one or two out there where pins may be swapped over.
My very first LCD some years ago was one such. Wasn't until I carefully checked that I found the mistake.
Also breadboards can on occasion be slightly out causing a missed connection.
Double check each connection with a multimeter for continuity with the Arduino powered down.
If you are using DUPONT cables they too can on occasion go bad so check those too.
DO NOT push stranded wire into a breadboard as that can be a recipe for disaster instead make sure any stranded wire is tinned before use.
It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google (who would have thunk it ! ) or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball.