Aside from the GPS Bluetooth receiver, another cool DIY device was created by Irish photographer David Hunt: the Camera Pi.
The Camera Pi is basically an old battery grip stuffed with a tiny computer, complete with a couple of USB ports, HDMI, General Purpose Input/Output, and a network adapter. For the computer, Hunt used a Raspberry Pi, which is available for €35, to power the device.
Hunt said that the benefits of using the Camera Pi includes remote controlled operation; easy triggering of the camera shutter; wireless tethered shooting; easy backups; on-the-go image conversion; and having a custom intervalometer.
If you’re interested with the project, you can hit the source link below to learn more on how Hunt built the Camera Pi from scratch.