gt; us...@lists.sourceforge.net]
> Sent: February-02-19 4:56 PM
> To: Enhanced Machine Controller (EMC)
> Cc: Gregg Eshelman
> Subject: Re: [Emc-users] Latching Output multiplexing in HAL
>
> Any chips on the control panel, especially directly on the keyboard or one
> the keyboar
e.net]
> Sent: February-02-19 4:56 PM
> To: Enhanced Machine Controller (EMC)
> Cc: Gregg Eshelman
> Subject: Re: [Emc-users] Latching Output multiplexing in HAL
>
> Any chips on the control panel, especially directly on the keyboard or one
> the keyboard is connected to via
Any chips on the control panel, especially directly on the keyboard or one the
keyboard is connected to via a multi-wire cable? Somewhere in there may be a
matrix encoder and RS232C chip. If you have RS232C then it should be possible
to tap into that to feed character data into a modern control
HC573 I had planned to use initially. I was not thinking straight when I
>> considered using a 74HC154 because those would only let me turn on one LED
>> at a time.
>>
>>
>>
>> Thaddeus Waldner
>>
>> ________
>> From: C
ruary 2, 2019 1:49 AM
> To: Enhanced Machine Controller (EMC)
> Subject: Re: [Emc-users] Latching Output multiplexing in HAL
>
> I had not seen the 7i73.
>
> I'm slowly putting together a pendent but I'm using a generic STM32F type
> development board. One advantage is that t
using a 74HC154 because those would only let me turn on one LED at a time.
Thaddeus Waldner
From: Chris Albertson
Sent: Saturday, February 2, 2019 1:49 AM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Latching Output multiplexing in HAL
I
I had not seen the 7i73.
I'm slowly putting together a pendent but I'm using a generic STM32F type
development board. One advantage is that these cost about $13, can
connect back to the PC using USB and have a lot more IO.
But to tell the truth, the project is stalled because I don't know what
> On Feb 1, 2019, at 10:48 PM, Chris Albertson
> wrote:
>
> One plan would be to use a purpose designed keyboard scanner chip. This
> would have a serial I2C output that sends data when a button is pressed.
> There are MANY such chips available.
>
I didn’t think of that. How would I connect a
One plan would be to use a purpose designed keyboard scanner chip. This
would have a serial I2C output that sends data when a button is pressed.
There are MANY such chips available.
On Fri, Feb 1, 2019 at 7:05 PM Thaddeus Waldner wrote:
> I am in the process of installing a manual control panel
I am in the process of installing a manual control panel on my router, using a
MESA 7i73 pendent card. The panel has a 5x6 button matrix and 16 LED
indicators. I am driving the LED indicators with a pair of 74HC573 8-bit latch.
I had initially planned on wiring each buffer input to a correspondi
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