lcd character display i2c

area515 / Photonic3D

Control software for resin 3D printers

http://photonic3d.com

GNU General Public License v3.0

133 stars 112 forks source link

lcd character display i2c #144

Open nerginer opened 8 years ago

nerginer commented 8 years ago

Did you think about a character LCD on the machine. It can handle the below functions

On start up when rasp-pi on, ready an connected it can display a "Printer ready" message with its IP address
After file upload a "Upload done" message
While printing something like "Slice 235 of 555"
After Job compilation "Job completed" message
Other error messages
some debug messages for developers

What do you thing about implementing this functionality? I can provide you the circuits and the connection diagram also the hardware itself.

kloknibor commented 8 years ago

I like it :)!

WesGilster commented 8 years ago

Sounds great. Are these connected directly to ramps and controlled through gcode? If so, I know I can do that. Otherwise, I'll need to understand a bit more about how you plan on interfacing with the LCD before we get started.

WesGilster commented 8 years ago

Sorry, I didn't see that you said i2c in your subject line... We've got an API for that. I'd like to see the specs next.

nerginer commented 8 years ago

My plan is to connect an I2C LCD to raspi GPIO I2C bus. But I am open to any other or better way. How can I reach to the i2c API?

In the other way how to control the LCD through gcode?

WesGilster commented 8 years ago

That's why I was asking you about how you were planning on wiring this.

Here are two ways it could be done...

Firmware must support it AND motor driving hardware must support it Apparently some 3D Firmware are already designed to do this: Checkout GCode M117 on: https://github.com/MarlinFirmware/Marlin/wiki/G-Code-in-Marlin Then, all you would do is add the gcode in our GUI and you are completely done. Very simple...
Direct from Raspberry Pi GPIO I2C bus in CWH. You include these in your build:

pi4j-core.jar
pi4j-device.jar
pi4j-gpio-extension.jar

You write an implementation for what events you want to take place:
org.area515.resinprinter.notification.Notifier

You enable your notifier in the config.properties like this: notify.org.area515.resinprinter.notification.LCDMessageNotifier=true

After your workspace and dependencies are setup, I would say you could get a proof of concept done in a matter of minutes if you are familiar with I2C.

WesGilster commented 8 years ago

Also, I didn't mean to give the impression I didn't want to write this. I would very much like to write it and have some pretty cool ideas about the message templating we could use with FreeMarker.

Let me see the documentation and I'll let you know if I can take a crack. Most likely it's not going to be a big deal, but I don't want to make promises about hardware I don't know anything about.

nerginer commented 8 years ago

Sounds great. This will be a great enhancement. I take a look at pi4j. We need to find an I2C LCD sample code. There are some libs but can not be sure which one to use. I will build up a test hardware setup and test the libs and find the best one. Than I will write to you to implement the FreeMaker templates. People can modify the templates to use for multi language supports and for custom messages. I will be very happy to help you on the hardware side.

WesGilster commented 8 years ago

Sounds great, just send me a PR when you are ready for me to integrate FreeMarker.