Sequent sells a HAT that can read a rotary encoder

[MGLove]

do you know if Sequent sells a HAT that can read a rotary encoder and can I stack different HATs (I am currently using a V3 ).I tried to have the encoder directly to the inputs and I think due to the speed of the encoder the PI misses pulses as the speed goes up.
Thanks<ken

 

[alexburcea]

Hi,
We have 2 HAT's that support rotary encoder: Home Automation and Four Relays Four Inputs.
Both are 8 level stackable on a single Raspberry PI. Before choosing one of them check the maximum encoder frequency you need.

Alex.

 

[MGLove]

Thank you the 4 relay/4 inputs looks prefect but will I be able to stack in on my current V3 HAT. I didnt know that you could combine different HATs

 

[alexburcea]

Sorry but I do not understand what you mean by V3 HAT. You must tell me the name then the version.

 

[MGLove]

I have the Industrial Automation 8 Layer HAT on the PI (layer 0)now and would like to add the 4 relay/4 input on top as layer 1

 

[alexburcea]

Yes, you can and because they have different I2C address, you can use layer 0 as well.
The layer or stack level does not refer at the actually level in top of raspberry but the I2C address of the card (the jumpers actually change that address)

 

[MGLove]

Thank You for your help

 

[MGLove]

Sorry to bother again but I can not install as the second board on the Pi(or stack 1) jumper in position 1
error below
>>> rel = sm_4rel4in.SM4rel4in(1,7)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python3.9/dist-packages/sm_4rel4in-1.0.5-py3.9.egg/sm_4rel4in/__init__.py", line 44, in __init__
File "/usr/local/lib/python3.9/dist-packages/smbus2-0.4.2-py3.9.egg/smbus2/smbus2.py", line 280, in __init__
self.open(bus)
File "/usr/local/lib/python3.9/dist-packages/smbus2-0.4.2-py3.9.egg/smbus2/smbus2.py", line 310, in open
self.fd = os.open(filepath, os.O_RDWR)
FileNotFoundError: [Errno 2] No such file or directory: '/dev/i2c-7'

 

[alexburcea]

You are using rock pi?