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NOT DISPLAYING RIGHT VOLTAGE #5

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ALJAZHERO opened this issue Jul 12, 2022 · 3 comments
Open

NOT DISPLAYING RIGHT VOLTAGE #5

ALJAZHERO opened this issue Jul 12, 2022 · 3 comments

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@ALJAZHERO
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Hi @swolebro , I have build your THC. It seems to be working fine for the most just 1 thing is off. It displays wrong voltage. For example 11.0V instead of 110.0V. Do you have a sugestion what is wrong. Thanks
@swolebro
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I got a hunch the value for SCALE I provided here in thc.ino doesn't match your setup. What's the ratio on your voltage divider?

@ALJAZHERO
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Ratio is 50:1, the program is working fine just display is wrong

@swolebro
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Hm, any chance the wires for the LCD are mixed up? That's a longshot, but you might be getting "110" backwards.

What do you get if you hook the analog read pins up to a simple 1.5V battery? Or if you hook up a USB cable and do some debugging serial prints of the ADC counts?

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@swolebro @ALJAZHERO