Control your OCtoprint Enabled 3d printer through an LCD and buttons!

This uses Octoprint's REST API to interface with Octoprint, Modern Device serial LCD, some buttons, and some leds, and a relay board.

• Monitor current print status and time remaining
• Start / Stop / Pause / Restart prints
• Turn the power to the printer and a sperate outlet on and off through relays
• List files stored on the Pi and the printer's sd card
• Load, Print, and Delete files
• Monitor and set bed and tool temperatures (Even for multiple tools!)

Requires

• [Modern Device serial LCD] (https://moderndevice.com/product/lcd117-serial-lcd-kit/)
• 6 buttons (Up, down, left, right, enter, back)
• 2 LEDs with resistors
• 2 Relay board for printer and outlet power(Optional)
• Wiring
• 3d printed mount (will be on Thingiverse)

Wire the LCD to +5v, ground, and serial TX on the Pi

Wire each of the buttons from their GPIO pin to ground as follows:

• up: 15
• down: 21
• left: 19
• right: 12
• enter: 13
• back: 16

Wire the LEDs through the resistors from their GPIO pin to ground, and wire the relay like this, but to the following pins:

• led1: 22
• led2: 18
• printer relay: 7
• outlet relay: 11

All pins can be changed in Hardware.py

Install dependancies:

sudo ~/OctoPrint/venv/bin/pip install hurry

Clone from github

cd ~
git clone https://github.com/chickenchuck040/OctoPrint-LcdController

If it is not installed in /home/pi/OctoPrint-LcdController, you wil need to change the paths in lcdController.py, Hardware.py, and lcd appropriately

To run use sudo ./lcd start To stop use sudo ./lcd stop

To run at startup

sudo ./install.sh

To turn the printer on or off from another program, write a 1 or 0 to printerPower. For example,

echo 1 > printerPower

By default, a log is stored in log.txt. It can be changed in lcdContoller.py

By default, the serial port /dev/ttyAMA0 is used for the display. It can be changed in Lcd.py