Thursday, 15 October 2015

Animating on Raspberry Pi 3.5 inch screen

My research is investigating how animations can be embedded into physical spaces. I have been experimenting with the Raspberry Pi as a small and inexpensive way of running animations.

 The Pi can deliver smooth animations through an HDMI cable. The problem with HDMI is the size of the connection which adds another 40mm onto the width of the 55mm Pi board and the rest of the cable is bulky. I would like to contain the contents within the footprint of the screen.

I bought a generic 3.5 inch screen off ebay which connects through th Pi'se GPIO pins. It doesn't plug and play and you have to load drivers to make the screen work with the Pi. I bought the screen from a China because of the costs, £10 compared to an adafruit screen which is about £39.

The instructions for using connecting the screen has a link to a raspberry pi image with all the drivers loaded.

Unfortunately the screen scans very slowly making it unusable for animation.

The screen connects to the pi via the GPIO and it could be that the GPIO slows down the signal.

There is an excellent tutorial on updating the Raspberry Pi drivers but  you need to put in the name of the screen and as the screen is generic which brand should I write in?

I installed the latest version of Raspbian 2015-09-24-raspbian-jessie.img and used SSHed into the pi using putty. SSH require knowing the IP address of your pi so I started the Pi connected via HDMI to a monitor, connected to the wifi through a small usb received

I think the device is tinylcd35