Arduino IO Expansion

AlexMagToast wrote:

Can you please try the ino File I send you in the attachments?
 
 

That file is has different pin numbers that are not part of my keyboard for LedGndPins, am I supposed to change something?
 
I tried that file as it is, didn't do anything, doesn't print VCC and GND so I think it's not actually setting pins. I see what you were trying to do by tricking it into thinking there were 8 LEDrow pins so I corrected the LedGndPins and used the 4 correct LedRowPins + 4 unused pins to total 8 LedRowPins. Doesn't do anything either.

 

OK so me and a friend got this LED thing figured out. It was exactly what I said before, what I didn't realize is that the uncommented prints  between lines 953 and 958 were clogging the pipe everytime an LED was set. My friend will make a PR tomorrow but this:

Line 455  fixes the key matrix

and this between Line 949 and 963 fixes the LED matrix  

glad you have figured it out. Obviously I have forgotten to edit these Serial prints out, since they are for debugging only.
I'll test your suggestion and update it accordingly.
Does the keyboard and LEDs work now?

AlexMagToast wrote:

glad you have figured it out. Obviously I have forgotten to edit these Serial prints out, since they are for debugging only.
I'll test your suggestion and update it accordingly.
Does the keyboard and LEDs work now?
 

Yes, keypad and LEDs work as expected and it seems to be working well in HAL. My friend has created the PR on the git.

There should be some further improvements to the keypad code. If you hit 2 keys at once, accidentally or otherwise it winds up activating about 6 or so key inputs. That's probably just how the electrical paths work but the firmware should do something to disregard the errored key inputs. Once these key errors activate they also do not self-reset, they will stay active until you press that key.

I'll mention these to my friend, maybe he can find more time to help. I'm also thinking of doing a version that just uses I2C for the keypad as that should avoid any issues with multiple key presses and avoid the LED dimming that happens when the key pins switch from outputs to inputs. I wanted to use a Teensy initially but went with a Mega because of the lack of pins on the Teensy 4.1 and the lower voltage/current. I can get around much of that by just using I2C expanders on the keypad.

Great work, thanks for sharing.
Planning to use this in my next machine. Made a small test bench for training so far. I was able to set up almost all the functions I needed, but had a issue with one. It's about the encoder that works in mode 1. In the Arduino IDE in the monitor everything works as it should, but not in LinuxCNC. It practically does not react to the encoder rotation, it is possible to change the value after 20-30 positions of the encoder itself. Maybe I missed something or configured incorrectly? Here is a small video with this issue.

Hello,

Thank you for the work, this help me a lot in my retrofit

I run into an issue when I try to run the command loadusr arduino-connector
I get the following error : execv(arduino-connector) permission denied

I verified the chmod and it's executable. I had to modify the python path to /usr/bin instead of usr/bin/env but made no other change.

If I start halrun with sudo, I get the same issue and I don't understand why.
Linuxcnc 2.9.2 from the official iso

Thank you for your help