25 Button Serial Keypad for Headless Printing
Posted by lazzymonk
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25 Button Serial Keypad for Headless Printing February 08, 2014 05:52AM |
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
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.
If anyone is interested (im sure your not) I can post the pcb layout and code.
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
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.
If anyone is interested (im sure your not) I can post the pcb layout and code.
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Re: 25 Button Serial Keypad for Headless Printing February 08, 2014 10:08AM |
Thanks 
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.
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.
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Re: 25 Button Serial Keypad for Headless Printing February 11, 2014 01:21PM |
Below is the pcb design for the keypad
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.
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.
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Re: 25 Button Serial Keypad for Headless Printing February 11, 2014 05:26PM |
Now has a faceplate too. stl files attached
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Re: 25 Button Serial Keypad for Headless Printing November 09, 2015 06:25AM |
Nice idea; but I prefer soft buttons on a touch screen, like this:
See [miscsolutions.wordpress.com] for more and [github.com] for the design files.[Full disclosure: mentioned stuff that I sell.]
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
See [miscsolutions.wordpress.com] for more and [github.com] for the design files.[Full disclosure: mentioned stuff that I sell.]
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
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Re: 25 Button Serial Keypad for Headless Printing November 10, 2015 07:25AM |
ah thats cool, I have my mind set on duet
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