I have the older Arduino and gShield combo and have an issue with my touch plate all of a sudden. It will not work at all and I have tried different software. I also eliminated my touch plate from the mix and made a closed loop to see if it would be detected by Easel or PicSender. None of them even can tell the plate is attached. It’s showing open when my $6=1 and closed when $6=0. I tried to check voltage coming from the #5 port on the Arduino and I get nothing. Any thoughts or is this thing dead? I looked and an Arduino Uno Rev 3 is only $23 but hate to spend money if that is not the issue.
I’m not quite sure what voltage I should be getting and if there is any other testing I can do to check the board.
Thanks for all your help on this!
With #6=0, A5 should measure 5v compared to ground.
Hey Neil- so most times I don’t get any voltage coming from that line. One time I did get some and it was poor .032 - not even 1 volt. Could that Arduino have an issue?
That’s with nothing connected?
Sounds like it might.
If you feel comfortable doing it, you could change the CPU_MAP so that you’re using a different pin. You’d have to recompile grbl to do that.
Any good articles or videos on doing it? I’m a computer programmer so I should be able to figure out. Hopefully…otherwise it’s a new Arduino.
I don’t know, but there’s nothing to it if you can reflash the arduino.
I’d recommend you use the Arduino IDE to reflash it.
Get the repository from here
.
In any text editor, open “cpu_map.h”.
You’ll just want to change a couple values in this section.
For example, if you’re not using Mist Coolant, you could change:
#define PROBE_BIT 5 // Uno Analog Pin 5
to
#define PROBE_BIT 4 // Uno Analog Pin 4
AND
#define COOLANT_MIST_BIT 4 // Uno Analog Pin 4
to
#define COOLANT_MIST_BIT 5 // Uno Analog Pin 5
Save, compile, and upload to the Arduino.
Note: That will give you the most recent version of grbl. If you want a different version for some reason, check the releases page for the source.
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Neil - I can’t thank you enough!!! I was able to flash it and all is working now on Pin 4 for my probe. I really do appreciate it and thank you!!! Have a good one and stay safe.
Jay
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