Here's my version of the classic Rock-Paper-Scissors game, but it's just you against the ATMEGA328P-PU. The scorekeeper is across the top with a yellow LED for even, green LED's for the player, and red LED's for the chip. If one side gets 5 up on the other, the scorekeeper flashes for the winner. The middle Rock-Paper-Scissors LED's indicate each side's play. For now, the micro tries to just randomly pick a play, but the plan is to have it reading my mind down the road.

The version I built here is a stand-alone board, but I used the Arduino software for programming and the game can also be built using an Arduino UNO board.

Step 1: Parts and Tools

You can build this project using an Arduino UNO or MEGA and a breadboard, but here are the parts I used to build the stand-alone game.

  • (1) White Bread Shield for Arduino (Tinkineering)
  • (1) Atmel ATMEGA328P-PU (Digikey)
  • (1) 28-Position DIP Socket (Digikey)
  • (1) 16MHz Crystal (Digikey)
  • (2) 22pF 50V Capacitor - Ceramic (Digikey)
  • (1) 1M-Ohm 1/4W Resistor (Digikey)
  • (1) Power Jack (Digikey)
  • (1) 1N4001 Diode (Digikey)
  • (1) 5VDC 1A Voltage Regulator (Digikey)
  • (1) 0.1uF 50V Capacitor - Aluminum (Digikey)
  • (1) 0.33uF 50V Capacitor - Aluminum (Digikey)
  • (2) 0.1uF 50V Capacitor - Ceramic (Digikey)
  • (4) SPST Tactile Switch (Digikey)
  • (4) 10k-Ohm 1/4W Resistor (Digikey)
  • (8) 3mm Green LED (Digikey)
  • (7) 3mm Red LED (Digikey)
  • (1) 3mm Yellow LED (Digikey)
  • (16) 220-Ohm 1/4W Resistor (Digikey)
  • Hook-Up Wire
  • Card Stock for Faceplate

  • Wall Wart Power Supply - If you have one that works with the Arduino UNO, your power supply will work with the power jack listed above.
  • Soldering Iron and Solder
  • Wire Cutters for Trimming Leads
  • Wire Strippers for Hook-Up Wire
  • Scissors and a Hole-Punch for the Faceplate
<p>Nice. You could also add some code to find the player's pattern and beat the player, thus making a more challenging game.</p>
<p>Version #2 should include &quot;lizard&quot; and &quot;Spock.&quot; :D</p>
<p>Very nice instructable! </p><p>You can get rid of the pull - down 10k resistors on the pushbuttons by using the internal pull-up resistors within the ATMEGA328P chip and having the pushbutton ground the input pin instead and reversing the logic in software. Just would eliminate the need for three 10K resistors!</p><p>In any event, a very nice instructable!</p><p>Best Wishes</p>
<p>Thanks for the feedback and the tip. I'll have to keep that in mind on the next project.</p>

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Bio: Open source products and projects for makers, hackers, mashers, engineers, builders, tweakers, tuners, and fellow tinkerers.
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