25 Button Serial Keypad for Headless Printing Im not sure if anyone else will be interested in this. But I have recently finished making a 25 button keypad that sends serial commands to my ramps. I made it because im really not a fan of needing a computer to print, but like the controls you get by using a computer. So I made this [attachment 26476 Keypad.jpg] It is really very simple. Its just an Attiny85, some push buttons and a load of resistors. The resistors make are used to create a voltage divider when pressed that is read by an ADC pin on the tiny. Half the buttons are connected to 1 ADC pin the other half to another. The far left and far right buttons, when pressed together shut of the power supply. [attachment 26477 Keypad-Buttons.jpg] If anyone is interested (im sure your not) I can post the pcb layout and code. https://reprap.org/forum/read.php?1,307988,307988#msg-307988 Sun, 13 Sep 2026 19:54:31 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,307988,612660#msg-612660 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,612660#msg-612660
Thanks!]]> karltinsly General Wed, 20 Jan 2016 06:13:19 -0500 https://reprap.org/forum/read.php?1,307988,582563#msg-582563 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582563#msg-582563 deaconfrost General Tue, 10 Nov 2015 07:25:39 -0500 https://reprap.org/forum/read.php?1,307988,582343#msg-582343 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582343#msg-582343 dc42 General Mon, 09 Nov 2015 17:59:03 -0500 https://reprap.org/forum/read.php?1,307988,582236#msg-582236 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582236#msg-582236 deaconfrost General Mon, 09 Nov 2015 13:33:08 -0500 https://reprap.org/forum/read.php?1,307988,582199#msg-582199 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582199#msg-582199 miscsolutions.wordpress.com].

I have shipped around 170 of these so far, and I am about to commission manufacture of another batch.]]> dc42 General Mon, 09 Nov 2015 12:16:07 -0500 https://reprap.org/forum/read.php?1,307988,582188#msg-582188 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582188#msg-582188 deaconfrost General Mon, 09 Nov 2015 11:55:25 -0500 https://reprap.org/forum/read.php?1,307988,582177#msg-582177 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582177#msg-582177
Quote
fabrice974
Does it works with marlin and ramps?

It currently works with RepRapFirmware, and support for it is being added to Smoothieware. There are a couple of issues with using it with Arduino/RAMPS/Marlin:

- Marlin doesn't support some of the gcodes it uses. Specifically, the M408 S0 and M408 S1 status commands (needed to get good status information from the printer), the M20 S2 command, and the M36 code used to provide file information. See [reprap.org] for the definitions of these codes.

- Arduino/RAMPS can't supply enough 5V power for a colour touch screen backlight, or even a mono graphics LCD backlight in many cases. Although you can power the screen separately from a 5V USB power supply instead.

A colour touch screen of this size (i.e. 4.3, 5 or 7 inch) is also rather an expensive option for anyone using budget electronics such as RAMPS.]]> dc42 General Mon, 09 Nov 2015 11:27:45 -0500 https://reprap.org/forum/read.php?1,307988,582119#msg-582119 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582119#msg-582119 fabrice974 General Mon, 09 Nov 2015 09:03:29 -0500 https://reprap.org/forum/read.php?1,307988,582106#msg-582106 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582106#msg-582106 deaconfrost General Mon, 09 Nov 2015 08:41:51 -0500 https://reprap.org/forum/read.php?1,307988,582032#msg-582032 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,582032#msg-582032




See [miscsolutions.wordpress.com] for more and [github.com] for the design files.[Full disclosure: mentioned stuff that I sell.]
]]> dc42 General Mon, 09 Nov 2015 06:25:48 -0500 https://reprap.org/forum/read.php?1,307988,581985#msg-581985 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,581985#msg-581985
can you help me on a easy conversion

( i want to avoid all the soldering side)
if i take an arduino mega, can i assign 25 button to inputs

what change need to be done on the software side

thanks]]> fabrice974 General Mon, 09 Nov 2015 04:40:38 -0500 https://reprap.org/forum/read.php?1,307988,472760#msg-472760 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,472760#msg-472760 It does need the computer to run , But is way simpler to implement !


Have a look

[sites.google.com]]]> tijeff General Wed, 18 Feb 2015 23:12:55 -0500 https://reprap.org/forum/read.php?1,307988,310037#msg-310037 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,310037#msg-310037 lazzymonk General Wed, 12 Feb 2014 13:15:37 -0500 https://reprap.org/forum/read.php?1,307988,310020#msg-310020 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,310020#msg-310020
Quote
jbernardis
I'm looking at this idea as a nice enhancement to my shapeoko rather than to my 3d printers. The LCD/encoder on my printers gives me somewhat clumsy control over local movement, etc, so the need is less there.

xpix has been working on this exact issue over on the shapeoko forums.
[www.shapeoko.com]
[www.shapeoko.com]]]> akhlut General Wed, 12 Feb 2014 12:39:43 -0500 https://reprap.org/forum/read.php?1,307988,309996#msg-309996 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309996#msg-309996
I'm looking at this idea as a nice enhancement to my shapeoko rather than to my 3d printers. The LCD/encoder on my printers gives me somewhat clumsy control over local movement, etc, so the need is less there.]]> jbernardis General Wed, 12 Feb 2014 12:03:10 -0500 https://reprap.org/forum/read.php?1,307988,309664#msg-309664 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309664#msg-309664 lazzymonk General Tue, 11 Feb 2014 17:39:41 -0500 https://reprap.org/forum/read.php?1,307988,309661#msg-309661 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309661#msg-309661 IanJohnson General Tue, 11 Feb 2014 17:35:57 -0500 https://reprap.org/forum/read.php?1,307988,309655#msg-309655 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309655#msg-309655
Now has a faceplate too. stl files attached]]> lazzymonk General Tue, 11 Feb 2014 17:26:06 -0500 https://reprap.org/forum/read.php?1,307988,309606#msg-309606 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309606#msg-309606 lazzymonk General Tue, 11 Feb 2014 15:10:34 -0500 https://reprap.org/forum/read.php?1,307988,309603#msg-309603 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309603#msg-309603
The firmware looks simple enough - just read in a single value from two ports and branch based on the voltage seen.]]> jbernardis General Tue, 11 Feb 2014 15:02:31 -0500 https://reprap.org/forum/read.php?1,307988,309540#msg-309540 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309540#msg-309540
[attachment 26679 KeypadPCB.jpg]

attached is the firmware. It is very basic and the ranges for each button are very wide. If you have a better selection of resistors than I have you should be able to work work out if more than one button is being pressed at the same time.]]> lazzymonk General Tue, 11 Feb 2014 13:21:11 -0500 https://reprap.org/forum/read.php?1,307988,309353#msg-309353 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309353#msg-309353 lazzymonk General Tue, 11 Feb 2014 05:10:37 -0500 https://reprap.org/forum/read.php?1,307988,309349#msg-309349 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309349#msg-309349 sdavi General Tue, 11 Feb 2014 05:05:07 -0500 https://reprap.org/forum/read.php?1,307988,309326#msg-309326 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309326#msg-309326
I will post the firmware tonight. Im at work at the moment.]]> lazzymonk General Tue, 11 Feb 2014 03:58:23 -0500 https://reprap.org/forum/read.php?1,307988,309271#msg-309271 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309271#msg-309271 cat.farmer General Mon, 10 Feb 2014 21:55:13 -0500 https://reprap.org/forum/read.php?1,307988,309270#msg-309270 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309270#msg-309270 jbernardis General Mon, 10 Feb 2014 21:50:51 -0500 https://reprap.org/forum/read.php?1,307988,309225#msg-309225 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,309225#msg-309225 lazzymonk General Mon, 10 Feb 2014 18:32:51 -0500 https://reprap.org/forum/read.php?1,307988,308112#msg-308112 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,308112#msg-308112
I have not tried it with the USB connected but there are no firmware changes needed for it to work so it should do. Only limitation is the attiny85 has a max serial baudrate of 115200.

It does work along side an lcd, I use it with an rrd LCD with encoder.

The functions are simply gcode sent to D0 pin on the ramps which is the USB serial pin. So you could make each button do what you like.]]> lazzymonk General Sat, 08 Feb 2014 10:08:42 -0500 https://reprap.org/forum/read.php?1,307988,308076#msg-308076 Re: 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,308076#msg-308076 Does it work along side usb,lcd?
Can you give more detail in it's functions?
Nice work..]]> cat.farmer General Sat, 08 Feb 2014 09:06:54 -0500 https://reprap.org/forum/read.php?1,307988,307988#msg-307988 25 Button Serial Keypad for Headless Printing https://reprap.org/forum/read.php?1,307988,307988#msg-307988
I made it because im really not a fan of needing a computer to print, but like the controls you get by using a computer. So I made this

[attachment 26476 Keypad.jpg]

It is really very simple. Its just an Attiny85, some push buttons and a load of resistors. The resistors make are used to create a voltage divider when pressed that is read by an ADC pin on the tiny. Half the buttons are connected to 1 ADC pin the other half to another.

The far left and far right buttons, when pressed together shut of the power supply.

[attachment 26477 Keypad-Buttons.jpg]

If anyone is interested (im sure your not) I can post the pcb layout and code.]]> lazzymonk General Sat, 08 Feb 2014 05:52:39 -0500