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vitotai / BrewManiacEsp8266

BrewManiac on ESP8266. Only ESP8266 needed.
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Buttons without (second) PCF8574 #61

Open Karteesi opened 4 years ago

Karteesi commented 4 years ago

I built a simple 4-button "keyboard" and had the idea of connecting it directly to the NodeMCU board. That is, without the intervening PCF8574. There seem to be just enough available pins: D3, D4, D5, D9, and D10. Even if a pump takes up D5, 4 pins for 4 buttons should still be left.

Can you give any pointers to the source code for reading the buttons? I think it should be rather simple to get the values - but I'm not sure...

vitotai commented 4 years ago

pins.h

Karteesi commented 4 years ago

Thank you! Awesome – the code was already there!

vitotai commented 4 years ago

I forget to mention that I've tried TX/RX and failed for some unknown reason. If you failed to use them, I won't be able to help.

Karteesi commented 4 years ago

I failed at first. but then I realized they were used by the USB connection. Once I unplugged the USB, D9 was good for the ENTER button. (Of course, I then had to add a separate PSU...)