Is there any I/O on the tinyG V8 board? If so, is there a document which describes how to toggle this I/O in G-Code?
Also, I am not using PWM, but the red led labeled PWM is always on. Is there a way to turn this led off.
Thanks
I/O question
From the original Synthetos forum (2011–2025)
Set $p1pof=0.0
Discussed here:
https://www.dropbox.com/s/6co45i4i0woordy/Spindle%20Test%201.doc?dl=0
One or two bits, intended for other uses (coolant, spindle on/off).
How much you need?
Thank you for the response.
One bit would be a good start for me. If I understand correctly, by setting the value of:
$p1pof=0 pin voltage goes low (0.0 V)
$p1pof=1 pin voltage goes high (3.3 V)
Please tell me, for version V8, which pin on the board (maybe PWM terminal) goes high and low with $p1pof changes.
Jim
Review the document URL above.
$p1p0f sets the off (0) state duty cycle of the PWM stream.
Valid range is 0 to 100% duty cycle, 0.0-1.0.
The pwm led you mention being lit is connected across the PWM pin to ground.
Look closely, there is an intensity difference between $p1pof=0.1 (the default value) and $p1p0f=1.0
PWM is a pulse stream, at frequency $p1frq (Hz) with Duty cycle determined by GCode S variable.
There are two available output pins, if you don't uses tinyG to control a spindle.
Coolant pin is always available, follows the Gcode (M7 or M8) and M9 commands
Spin is on/off, following M3 and M5 commands
All tinyG I/O is 3.3v logic
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