Hi, I would like to present my first raspberry-pi project.
A Pip-boy like Personal Computer (if you are a Fallout Fan, you see what i mean) ! I also use it as display / stream server for my telescope (video an details soon !)
It’s made with a Raspberry-pi model B + a 2.8″ LCD 8bits parallel TouchScreen connected on GPIOS.
XWindow Desktop session can be controlled with Touchscreen or Keyboard.It is powered with a 5V-1A 2600mAh battery which gave approx 3h of autonomy (about 2h if wifi dongle is used).
Hardware parts :
– 1 xRaspberry Pi model B (30 – 35 €).
– 1 x ITDB02-2.8 TFT LCD 2.8″ Touchscreen from ITEAD STUDIO (15 – 20€).
– 1x Li-Po 2600mAh battery (10 – 15€) – 3 hours of autonomy.
– 2 x Plastic Transparent photo frame and 2 x fixing parts taken from snowboard gloves.
– 2 x microswitch (salvaged from a noisy toy).
– 25 x Female-Female Dupont wires.
Software parts :
– OS : Raspian wheezy .
– Custom Framebuffer and Touchscreen drivers based on FBTFT.
– AdvanceMame Emulator.
– Some Python scripts for microswitches management.
– Custom rc.local file, X11 configuration, evdev xinput configuration.
Everything is mounted on a self-made case, so the Raspi Pip-oy can be attached to arm.
It supports USB wifi dongle and Bluetooth mini-keyboard and many other USB devices.
It can connect to video stream (like IP network cameras) and run AdvanceMame Arcade Game Emulator.
2 switches are connected to GPIOS : the first to switch between displays (console/Dektop) and to command and the second to perform a safe shutdown..
ITDB28 TFT Touchscreen Wiring :
FBTFT Drivers :
The FBTFT drivers are now included in the Raspberry Pi kernel and can be installed with rpi-update.
You have to set and enable the driver module for your TFT.
For this project (TFT is a ITDB02-2.8), the device is registered with this command line :
sudo modprobe fbtft_device name=itdb28fb gpios=led:18,db0:14,db1:15,db2:4,db3:23,db4:24,db5:27,db6:8,db7:22,dc:3,wr:2,reset:25
– « gpios » must match your wiring / « name » is the specific fbtft driver for the TFT model.
– alternatively, you can modify gpios in the source (fbtft_device.c file) and compile the modified driver (https://github.com/torvalds/linux/blob/master/drivers/staging/fbtft/README)
– See https://github.com/notro/fbtft/wiki, there are many informations about TFT drivers on these pages.
You can also check the steps on Instructables : http://www.instructables.com/id/Raspi-Pip-boy-wearable-Pi/
General demo video :
Elphel Network Camera streaming display :
Mame playing demo :