Get sensor data into your p5 sketches -- the server files
These are the files necessary for the server end of the p5bots setup. While the instructions below help you get the example file up and running, you'll need the client-side library as well to make your own work with the p5 and p5bots APIs.
File > Examples > Firmata > StandardFirmatato your board. To do this, you'll have to select your board and serial port from the
Toolsmenu. (More instructions from Arduino.) Note: If you are only using serial, you can skip this step.
npm install -g p5bots-server
but if you don't have root access to your computer or just wanna keep things local, that's chill, too:
npm install p5bots-server
To test your setup, you can run any of the examples in
examples/quicktest.js. (It's inside the
Currently, the RGB LED test is uncommented. To run it, set up the breadboard like this:
This setup uses a common-anode RGB led. The pin with the longest leg is the anode, and should go into the hole connected to ground. Red is pin 9, green 10, blue 11.
If you installed globally, run:
bots-go -d 'node_modules/p5bots-server/example'
If you installed locally, you can run:
node ./node_modules/.bin/bots-go -d './node_modules/p5bots-server/example'
or navigate to
node_modules/p5bots-server and run:
npm run examples-go
Open your browser to
localhost:8000 and you should see a circle whose color is also displayed on your RGB Led. Try pressing the arrow keys.
For other examples, check out
p5bots-server/example/quicktest.js and try other layouts. From the
/p5bots-server folder, you can run
npm run examples-go to get the server up.
If you get an error telling you the board cannot be found, or something like:
Error: Error: Cannot open /dev/cuusbmodem1421
you may have to adjust the board declaration in
Either use the port you noted down in setup, assuming you haven't moved the board, or check out the console, where we are listing the ports via the serial command. The one that looks like
/dev/cu.* is likely the one you need.
If when installing the package you get something like:
npm ERR! errno: 3,npm ERR! code: 'EACCES',npm ERR! path: '/usr/local/lib/node_modules/p5bots-server',npm ERR! fstream_type: 'Directory',npm ERR! fstream_path: '/usr/local/lib/node_modules/p5bots-server',npm ERR! fstream_class: 'DirWriter',npm ERR! fstream_stack:npm ERR! ['/usr/local/lib/node_modules/npm/node_modules/fstream/lib/dir-writer.js:36:23',npm ERR!'/usr/local/lib/node_modules/npm/node_modules/mkdirp/index.js:37:53',npm ERR! 'Object.oncomplete (fs.js:107:15)' ] }npm ERR!npm ERR! Please try running this command again as root/Administrator.
you may have to install using
sudo install -g p5bots-server
or else install locally.
bots-go can be run with the following options:
-d, --dir <d> Set base directory for server-f, --file <f> Set file to use for the index page-p, --ufilepath <p> Path to file containing user-defined server-side listeners.-n, --ufilename <n> Path, inluding file name, to user-defined server-side listeners.
You can also find these by running
node /appjs -h