Is the input on all character LCDs range from zero to 3.3 ?

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theresa.waters
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Joined: Sun May 02, 2021 7:07 pm

Is the input on all character LCDs range from zero to 3.3 ?

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Is the input on all character LCDs range from zero to 3.3 ?
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keeling.jefferey
Posts: 2
Joined: Sun May 02, 2021 7:25 pm

Re: Is the input on all character LCDs range from zero to 3.3 ?

Post by keeling.jefferey »

No, most character LCDs range from zero (ground) to 3.3V or 5V. There are old lcds that have a negative voltage for a wider voltage sweep. This extra voltage range is necessary to adjust for colder temperatures.
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