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Wiring for buttons #50

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mikkelvp opened this issue Apr 21, 2020 · 5 comments
Closed

Wiring for buttons #50

mikkelvp opened this issue Apr 21, 2020 · 5 comments

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@mikkelvp
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Could you please provide a diagram or description on how to wire buttons?
@dumpamob
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Done. Simple wiring diagram updated.

@mikkelvp
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Thanks!

@mikkelvp
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mikkelvp commented May 5, 2020

IMG_20200505_202209
@dumpamob My LCD gets no data when going through the PCF8574. Works without PCF8574.
Am i missing something or is the PCF8574 maybe faulty?

@dumpamob
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dumpamob commented May 7, 2020

The BrewUNO display was developed on a 20x4 LCD, it is recommended to use it. Possibly your problem is the address of PCF8574. In the "src" folder, open the Lcd.h file, line 12, change the 0x20 to 0x38 and upload the firmware again. Another way to find out what the PCF8574 addresses are is by loading an i2C scanner file.

@mikkelvp
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mikkelvp commented May 9, 2020

@dumpamob 0x38 was the correct address, thanks!
Can't get my buttons working though. I'm using these AC_SL1500
Any suggestions?

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@mikkelvp @dumpamob