Point of Sale

Introduction

This application is two things. First, it is a point of sale system designed for small businesses that have an entry fee and also sell various items. Second, it is an introductory/example/demo programming application that bridges the gap between a hello world or TODO list example and advanced tutorials.

Additionally, it combines a printer for food orders and a food notification buzzer when coupled with a Raspberry Pi.

Dependencies

Languages

• go
• mysql
• python (optional - for the buzzer)

Hardware (optional)

• a Raspberry Pi 2 (other versions require a different printer)
• a Mini Thermal Receipt Printer
• the buzzer from a Sunfounder Sensor Kit

Note: the hardware will need to be connected together and configured. See the complete setup details for more information.

Install

You'll need glide to install the dependencies:

• go get github.com/Masterminds/glide

Get the code

• go get github.com/zramsay/point-of-sale

Install the dependencies

• glide install

Create the database

• mysql -u root -p -e "CREATE DATABASE myBusiness"

Load it

• mysql -u root -p myBusiness < sample.sql

Compile and run the app

• go build && ./point-of-sale -password yourMySQLpasswordHere

View it

• visit http://localhost:8081 in your browser

See here for detailed installation and setup instructions.

Motivation

This app was built to address the needs of a small family business for which existing point of sale systems did not offer a solution. It doubles as an educational tool for budding developers by covering several concepts in as few lines of code as possible.