Hi-Striker control panel
Monday, 19 October 2009
Yesterday I finished the control panel for the Selleck Striker and started hooking it up:
reset button – Before a new contestant hits the striker, the reset button clears the LEDs, then checks the difficulty setting and applies any changes. It’s a SPST, switching 5V from the Arduino to one of its analog input pins. High on the pin = reset.
play/demo switch – Demo Mode plays a scrolling LED effect, Play Mode waits for a change in the pressure (like a hammer strike!). This is a SPDT (though I could have just used a SPST) switching 5V from Arduino to one of its analog input pins. High on the pin = Demo Mode, low on the pin = Play Mode.
difficulty knob – Just a 100K potentiometer that sends 0 to 5V to one of the analog input pins. This will allow us to adjust how much force is needed to get to the top.
score display – This 3-digit numeric LED display will show the “score” of the strike. I’m still not sure how I’ll calibrate it, but the idea is that you get a finer resolution score than the 0-50 LEDs in front. I’m thinking of having this also display the “difficulty” setting when you twist the knob.
striker connector – This is an RJ-45 connection for the striker portion, so that the two halves aren’t permanently tethered to each other. I’m only using three of the eight conductors.
audio out - This 1/4″ mono jack will send sound effects and other audio to the sound system.
Also note the the three Arduinos in the bottom of the photo. The Mega on the right will handle the LEDs and input elements, the NG in the middle drives the 3-digit LED display, and the Duemilanove with the wave shield on the left plays the sound effects. They’ll be communicating via their serial ports.