BTT Pi - GPIO Numbering

Configs
1

SOLVED !

Message form facebook BTT group

PG19 is definitely a GPIO pin. It may not be on the 40 pin GPIO header but any input / output pin on the BTT Pi and CB1 is GPIO.

The formula to convert from PG19 to GPIO is:

[(PG - PA)*32] + {Pin Number}

Where PA = 1, PB =2….so PG = 7

So [(7-1)*32] + 19 = 211

Try using GPIO211

The BTT documentation on this is rubbish and lacking.

result :

image

Thanks again and happy FAST printing

2 Likes
2

Push on GitHub with more explanation.

3

Is there any way to make that GPIO211 pin a PWM one rather than just voltage?

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Each pin can work as software PWM pin which usually is the better choice anyway.
If you aim for hardware PWM then the answer is no.

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@Jfml :

Could you please put your code snippet between code braces.

Format

The way you did it, information like spaces get lost.

1 Like
7

Any idea what the error could be?

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Put inside printer.cfg

[mcu host]
serial: /tmp/klipper_host_mcu

Remove from fan…cfg

1 Like
9

thanks I will try

10

I have gotten it to work, I needed to create the MCU but I see that it spins slowly. I have measured voltage and it is approximately 3 v

If I set the value in klipperscreen to 0, the rest of the values ​​stop spinning very slowly with only 3 v and the fan It is 5v

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4 posts were split to a new topic: Error “Unknown pin chip name host’.”

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2 posts were split to a new topic: Printer object already created