Dash point of sale embedded system

Point of sale embedded system based on Dash cryptocurrency. The whole project was done on a Raspberry Pi 3 model B+ with the original 7" touch screen running Raspbian Stretch OS. Based on moocowmoo's dashvend project

Requirements

Hardware requirements

• Raspberry Pi 3 model B+
• Raspberry Pi official 7" touch screen
• Qibixx MDB Pi Hat
• External drive for blockchain storage

Software requirements

• Raspbian Stretch OS

Installation

The first thing to do is an update/upgrade:

sudo apt-get update && sudo apt-get upgrade

Position yourself in the root of the repository and run the make command.

make

Edit the config file and set your variables.

Place the following commands in crontab:

@reboot python3 <path-to-dash-pos>/dash-pos/bin/start_dashvend.py
0 */1 * * * python3 <path-to-dash-pos>/dash-pos/bin/conversion/conversion_dash_hrk.py

Conversion only works for HRK (Croatian kunas)

MDB

To get your Raspberry Pi to work with the Pi Hat follow this official documentation.

Display

If you want to use the original 7 inch touch screen in /etc/enviroment add the following line:

DISPLAY=:0

and in ~/.bashrc add the following line:

export DISPLAY=:0

In /boot/config.txt place the following lines:

display_rotate=1 # or different numbers depending on the orientation

Finally, in /etc/xdg/lxsession/LXDE-pi/autostart place the following lines:

@unclutter -idle 0 # remove mouse pointer
@<path-to-dash-pos>/dash-pos/bin/fliptouch.sh # flip the touch screen(change the script depending
					      # on your rotation
@xset s off # disable screen turn off after 10 minutes
@xset -dpms # disable screen turn off after 10 minutes

Video demo

Demonstration video