Complete with LEDs, sensors, and an 802.15.4 wireless module (To be used in the near future in conjunction with a remote scoreboard, among other things). Every time either side of the table is cleared, it allows for that team to select their team color.
Using Ethernet or 802.11 with a microcontroller is a real PITA.
I decided to go with MiWi P2P instead of Zigbee. It’s significantly less bloated, and the MRF24J40MA is only like $9, compared to like twice as much for an Xbee. Yes, the xbee can handle the stack on its own, but I will only ever be using wireless in applications with a decent microcontroller like a dspic33f, so I don’t see any reason to shell out the extra cash.
Yes. But you’ll need to use a modulated sensor, a simple intensity one won’t work.
You can use a single 8-pin LM567 to do it. Set up the ‘AC Test Circuit’ in the datasheet. Use pin 5 to drive a transistor to drive the IR LED. Hook a phototransistor up to pin 3, and pin 8 is an open collector output that’ll be on when the sensor detects something.
The project required a lot of IOs: 144 outpits (RGB*24), plus sensor stuff.
So I used 4 40-pin PIC18Fs to handle the dirty work (6 cups per chip. They collect sensor data and handle PWM routines), and a single dsPIC33F to control color fading, interface, etc.
Using Ethernet or 802.11 with a microcontroller is a real PITA.
I decided to go with MiWi P2P instead of Zigbee. It’s significantly less bloated, and the MRF24J40MA is only like $9, compared to like twice as much for an Xbee. Yes, the xbee can handle the stack on its own, but I will only ever be using wireless in applications with a decent microcontroller like a dspic33f, so I don’t see any reason to shell out the extra cash.
Nice, that would work well with my beer pong playing robot.
Why did you choose 802.15? Just happen to have a ZigBee dev kit kicking around?
Table looks good either way.
thts so sick
What do you do when there are two cups left?
good god man, my eyes. that’s bright as hell
cool though =)
That is awesome. Because of the lights that table would look really cool with translucent dishwasher safe beer pong cups.
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how the heck did you do that?
thats deff th most awsome thing ever!! lol
a what now?
nice
holy crap, that musta been spendy!
How much would it cost to make?
You Must Pong At M.I.T.
lol
Good to see that college education at work! lol
coolest shit ever
bad ass
yo does anybody know how to make a auto ball washer, i herd something about useing a aquarian pump
Yes. But you’ll need to use a modulated sensor, a simple intensity one won’t work.
You can use a single 8-pin LM567 to do it. Set up the ‘AC Test Circuit’ in the datasheet. Use pin 5 to drive a transistor to drive the IR LED. Hook a phototransistor up to pin 3, and pin 8 is an open collector output that’ll be on when the sensor detects something.
is there a way to do simple on/off without a microcontroller but still using ir sensors?
The project required a lot of IOs: 144 outpits (RGB*24), plus sensor stuff.
So I used 4 40-pin PIC18Fs to handle the dirty work (6 cups per chip. They collect sensor data and handle PWM routines), and a single dsPIC33F to control color fading, interface, etc.
Each circle is a block (I believe 3/4″ thick) of acrylic, sanded to be frosty. There are 5 LEDs mounted inside the block, which is why only it glows.
damn thats sick!! i like the color change thingy. howd u get the light to stay in each circle?