Quick-Draw

Have yourself a high noon standoff right in your own home

To be submitted as part of "YeeHaw Hacks" hackathon by MLH

Video Demo

Who Lives, Who Dies, Who Tells Your Story

Now, who doesn't love them a good ol' fashioned duel! Sure is a shame they're outlawed... unless?

Execution

+---------------------------+
|Server waits for connection|    Establish TCP connection with server
+-+-------------------------+
  |
  |
  v
+-+---------------------+
|Client-Server handshake|        Complete handshake to check
|   (for each client)   |        if communication is working
+-+---------------------+
  |
  |
  v
+-+--------------+
|Countdown begins|               The duel will commence after we count to ten
+-+--------------+
  |
  |
  v
+-+-----------+
|Clients shoot|                  Server recieves packets and determines winner
+-+-----------+
  |
  |
  v
+-+----------------------+
|Server broadcasts winner|       Send client unique packet with win/loss
+------------------------+

Do It Yourself

Hardware

• NodeMCU
• Push Button
• 10K ohm resistor
• RGB LED
• Breadboard
• Wires
• Toy gun (optional)

Software

• Go
• Arduino CLI
• Make
• BASH (for automating installing NodeMCU cores)

---

# Building & running the server
###############################

cd server
go build

# Make sure to port forward port 1337
# before running the server

./qd-server


# Compiling and flashing the NodeMCU
####################################

cd client
chmod +x prepare.sh
./prepare.sh

# Edit NodeMCU/connection.h and set the
# variables to meet your connection needs

# Set PORT to the port of your NodeMCU
make PORT=/dev/ttyUSBX flash