I'm doing a project that uses an LCD screen, but I've been seeing that I need to use a 10k resistor, which I don't have.
Using a 1k resistor will damage my LCD?
Before I answer your question, let's do some math.
The 1k is across 5V. How much current flows through the 1k resistor?
Given this, how much power must this 1k resistor dissipate?
Is that a 10K potentiometer (variable resistor) for adjusting the LCD contrast? If so, there is no problem using a 1K potentiometer in the place of the 10K potentiometer. A 1K pot will waste a small amount of current compared to the 10K pot, but only a few mA. I often just put a 1K fixed resistor from contrast pin (Vo) to ground.
If not, what is the resistor used for? A schematic would be welcome.
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It's the tutorial for LCD displays, I'm quite new to Arduino
So it is the contrast pot?
Yep! Thing Is I don't think I have any pot
It is oten a blue box with 3 legs. In the middle is a white circle that you can turn with a screw driver...
Potentiometers or pots, for short.
Do you have a 1K fixed resistor? It will be marked brown, black, red. Lower values will work, too Put it between the LCD Vo terminal (LCD pin 3) and ground. That should result in satisfactory contrast. You can even just connect the Vo terminal right to ground with a wire, in a pinch, but the contrast may be not be optimal.
This will appear as an issue in future projects from time to time so it’s worth buying a cheap set of resistors
When you get chance .
Have a look on eBay etc .
AI nonsense removed.
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