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### Author Topic: Understanding Mach3 pulses  (Read 1309 times)

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• 16
##### Re: Understanding Mach3 pulses
« Reply #10 on: May 22, 2018, 06:29:02 AM »
Let us hope that the next 15 years are just as 'unproductive'

#### BluePinnacle

• 304
##### Re: Understanding Mach3 pulses
« Reply #11 on: May 22, 2018, 07:43:19 AM »

• 16
##### Re: Understanding Mach3 pulses
« Reply #12 on: June 01, 2018, 06:10:02 AM »
Going back to Ger21's post,  I fully understand that the pulses will probably not be 'clean' pulses, but as you say, the pulse width can be set in Mach3.  So, assuming that a 20 uS pulse is selected, that 'dirty' pulse may consist of several square wave oscillations followed by a low voltage level before the next pulse is sent?  Also, assuming that the pulse is read only on the first rising wave form, would it be advantageous that the first rising pulse as well as incrementing the count also initiates a 'wait' sequence of, say 18 uS before it attempts to read the next pulse?

#### joeaverage

• 5,333
##### Re: Understanding Mach3 pulses
« Reply #13 on: June 01, 2018, 06:26:22 AM »
Hi,
have you looked at the pulse stream with a scope? Its not a perfectly regular pulse train like you'd get from a signal generator
but neither do you have to go to such lengths to recover it. Provide you amplified and limited to 0-5V TTL levels then a Schmitt Trigger will retrieve
the signal without difficulty.

Unless your dead set keen on using logic ICs I'd use an Arduino as your counter and binary to BCD and 7-seg decode/latch.

Craig
My wife left with my best friend...
and I miss him!