Drawing robot

This project uses an RaspberryPi 3, a PCA9685, some servo motors and a pen to draw a picture like a human would do.

Bokeh is used to provide a web app which allows to upload and modify images in the webbrowser as well as simultaneously watch the drawing process in a simulator. Image upload from the controlling device is possible.

Usage

Startup

• check and modify config.ini
• start with bokeh serve drawing-robot on level above the "drawing-robot" directory
• if you're using an external device to control it make sure that the IP is whitelisted: bokeh serve --allow-websocket-origin localhost:5006 --allow-websocket-origin IP_OF_EXTERNAL_DEVICE:5006

Web Interface

• open the bokeh app in your browser: http://localhost:5006/drawing-robot
• upload an image by clicking on the choose file button
• check the image modification process by scrolling down
• you might want to change output size, threshold or edge detection algorithm and recalculate the result by clicking on apply changes
• if you're satisfied you might want to open the simulator Tab and start the drawing process by clicking onto the start button
• you can pause the drawing process by clicking on the Stop button - the robot will finish it's current line and halt then
• you might also go back to the Image processing tab and change the image, the drawing process and simulator will then be reset.

Documentation

• See documentation/installation-raspbian.md for infos how to set things up on a RaspberryPi (3) using a fresh Raspbian.
• See documentation/links.md for some links related to the project.
• See documentation/raspi-robot.md for more informations on setting up the Raspberry Pi.