Re: Spindle Relay on an Ebay 5axis Breakout Board
Originally Posted by
xuraax
Hi,
I am setting up one of these BOB's which works off the parallel port. All options seems to be responding correctly but I have an issue with the spindle relay which is driven by P1. Whilst Mach3 is in use the relay can be turned on and off as expected. However during computer power up this relay comes on for a few second. Same during Computer power down. My intent was to use this relay to turn on and off the router but it would be dangerous if the issue at power up/down is not resolved.
Has anyone faced this problem before please?
Regards
Hi,
Does the BoB have a charge pump function?
Mach3 has a charge pump output that is designed to address this exact issue.
This function in Mach3 outputs a 12.5Khz when Mach3 is up and running. Breakout boards that can use this signal, such as the MB-02V6 ( https://www.homanndesigns.com/index....products_id=59 )
disable all outputs unless this signal is present. That way when the PC boots and twiddles with the parallel port outputs there are no surprises such as the spindle turning on momentarily as the breakout board disables all outputs.
Cheers
Peter.
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