A Golang RFID access control system for Chimera Arts & Maker Space.
Intended to run on a Raspberry Pi, connected to an Arduino that controls an electronic door latch.
The Arduino code just listens for the character "1" over the serial port, and if it gets it, will trigger the electronic door latch using a MOSFET transistor.
The go-inside binary in this repository is built to work on a Linux ARM operating system, like the RPi. If you need to run this application on other systems, it will need to be rebuilt using go build.
The Arduino code can be found in the servant directory.
First, you must upload the servant/servant.pde sketch onto your Arduino.
Download the go-inside binary (for Linux ARM distros) and place in desired directory (home director is just fine).
After that, run the go-inside binary:
$ go-inside -port="/dev/ttyACM0"
The port will be the location of your Arduino serial port connection. On Raspberry Pi, it usually starts with /dev/ttyACM. On OSX, it is usually at /dev/tty.usbmodem.
http://www.stuffaboutcode.com/2012/06/raspberry-pi-run-program-at-start-up.html
Create a file at /etc/init.d/go-inside:
#! /bin/sh
case "$1" in
start)
echo "Starting go-inside"
/usr/local/bin/go-inside
;;
stop)
echo "Stopping go-inside"
killall go-inside
;;
*)
echo "Usage: /etc/init.d/go-inside {start|stop}"
exit 1
;;
esac
exit 0
Make the script executable:
sudo chmod 755 /etc/init.d/go-inside
The register the script to run when the system starts up/shuts down:
sudo update-rc.d go-inside defaults
To build the package for ARM based systems (such as the Raspberry Pi) while on another platform (OSX, Windows), run the following:
GOARCH=arm GOOS=linux go build
- Negate the use of the Arduino and use the RPi's GPIO pins instead. Need to use a 3.3v transistor to trigger the door latch in order to accomplish this.
Written by Dana Woodman for Chimera Arts & Maker Space. Based on the rs232 library generously shared by jpad.
Licensed under the MIT license.