On 10/4/2016 10:29 AM, Sag ich Dir nich wrote:
> so i want to use pin 4 (SCK) and 6 (MOSI) of P503 for eQEP encoder inputs A 
> and B. If i read correctly, those are pins P9.31 for SCK and P9.30 for MOSI.
> I set them to input like so: config-pin 931 input
>                                        config-pin 930 input
> 
> but how do i connect those pins to p9.92 and P9.27?

You will have to physically connect the pins on the BBB (or CRAMPS) P9
header:

Connect P9.42 to P9.30
Connect P9.27 to P9.31

Once you do this, make sure you NEVER set more than one of the pins
wired together to be an output.

> do i need to make sure the voltage don“t go above 3.3v? Because it says 
> SCK-5V and  MOSI-5V

If you connect the pins on the header-side, and hook your encoder
signals to the P503 pins, you can make use of the protection chip on the
CRAMPS board and you can have 5V encoder signals.

-- 
Charles Steinkuehler
[email protected]

-- 
website: http://www.machinekit.io blog: http://blog.machinekit.io github: 
https://github.com/machinekit
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