@philipptrenz/photo-booth1.4.4 • Public • Published
A multi-platform photo booth software using Electron and your camera
(Source: The Verge, accessed 08 March 2018)
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How it works
Simply connect your camera via USB or even via wifi to the computer running this application, for example a Raspberry Pi. The app shows a countdown by clicking at the screen (or tapping at a touchscreen), triggers your camera to take a photo, downloads it from your camera, shrinks it to a smaller size and displays it on the screen. First in fullscreen, then added to a gallery of previous taken photos.
photo-booth also provides a web application by running a webserver. Every newly taken photo gets immediately pushed to the webapp. From there it's easy for your guests to download their photos. There's also the option to leave a e-mail address for sending the photos afterwards. You only have to provide a Wi-Fi hotspot.
Because of the use of gphoto2 it works with nearly any camera like plug and play. A list of supported devices can be found here.
I tested it under Ubuntu Linux (64bit), MacOS and Raspbian (Raspberry Pi 3, ARM). It will probably not work on Windows. Anyway, the documentation here will be focused on Linux based systems.
Raspbian STRETCH (with desktop):
# Install needed dependenciessudo apt updatesudo apt install git libxss-dev libgconf-2-4 libnss3# Install nodewget -O - https://raw.githubusercontent.com/audstanley/NodeJs-Raspberry-Pi/master/Install-Node.sh | sudo bash;# Install latest version of libgphoto2, choose last stable releasewget https://raw.githubusercontent.com/gonzalo/gphoto2-updater/master/gphoto2-updater.sh && sudo bash gphoto2-updater.sh# If you are using a Raspberry Pi > 1: Activate hardware accelerationsudo apt install libgl1-mesa-drisudo su -c 'grep -q -F "dtoverlay=vc4-kms-v3d" /boot/config.txt || echo "dtoverlay=vc4-kms-v3d" >> /boot/config.txt'# Clone the repositorygit clone https://github.com/philipptrenz/photo-booth.git && cd photo-booth# Installnpm install
To run photo-booth the following command should do it. To run the webapp on port 80 and for the usage of GPIO pins at the Raspberry Pi root privileges are required.
Important: The command needs to be run from a terminal on the GUI, executing via SSH will most likely fail!
sudo npm start
Basically, it's not a good idea to run a web server as root, if you do not need GPIOs consider setting up a redirect from port 80 to 8080 on your system. That can be achieved by a iptables rule for example. Then you can start photo-booth with
HINT: The little linux tool
unclutter can hide the cursor.
Start photo-booth on boot (for Raspberry Pi)
To start photo-booth on boot add the following line at the end of
@sudo node /home/pi/photo-booth/scripts/cli.js
There are a few settings and options that you should take a look at.
The project includes a config.json file. There you can set several parameters, e.g. to start in fullscreen or not or if you want to keep your taken photos on your camera.
It looks like this:
Best way to modify the
config.json is by copying it to
my.config.json, photo-booth will prefer the latter one:
cp config.json my.config.json
- Images get shrinked after got downloaded from the camera, set the size with maxImageWidth
- You have to figure out the captureTarget of your camera. Even if you choose to keep images at the camera, if gphoto2 chooses to store by default to the RAM of your camera, images get deleted when camera get turned off. Figure out the right captureTarget by running
gphoto2 --get-config=capturetarget, then choose something should named sd card or so. This should be your first try if a photo gets taken, but it won't show up at the screen.
- If you want to keep images on camera, set
- The errorMessage is pure HTML, just fill in whatever you want
How to use the integrated webapp
As mentioned above photo-booth has a built in web page where images can be downloaded.
For an easy way to use it, start a open wifi hotspot on the computer photo-booth runs on. If you use a Raspberry Pi, there're enough tutorials out there to figure it out (i.e. here. Then connect your device, e.g. a smartphone, with the wifi, open your browser and type in the ip address of the Pi. More elegant is it to configure a DNS redirect so the users can type in a web address like "photo.app", therefore I use
dnsmasq which is also configured as DHCP server.
Use a push button to trigger photos
You can connect a physical push button to the GPIO Pins of your Pi to trigger photos!
Therefore activate the GPIOs by setting
"useGPIO": true in config.json. Then connect the first port of the push button to the ground pin of your Pi, second to GPIO 3 (PIN 5) and to a resistor of about 10k-100kΩ, the other end of the resistor to 3.3V (e.g. PIN 1). That's all!
Make sure you run the application as root (
sudo npm start), GPIOs need root privileges.
_______RASPBERRY PI_______ | |----3.3V---●o | ~50kΩ → ▯ oo | |----GPIO3--●o | [-\ oo | \------GND---●o | oo | oo | oo | oo | oo | oo | oo | oo | | |
If you have any problems, start reading here. If you do not find anything, check under Issues, if someone else already had a similar problem. If you still have no solution, open a new issue.
Why are all images in grayscale?
config.json and change
My camera takes a photo, but it does not show up
This may be related to wrong capture target settings. Run
gphoto2 --get-config capturetarget from the console, the output looks something like this:
Label: Capture Target Type: RADIO Current: Internal RAM Choice: 0 Memory card Choice: 1 Internal RAM
Identify the number of the memory card and change the
captureTarget property in
An article was also published in the blog of my degree course (in German).