Arduino Forum

Community => Exhibition / Gallery => Topic started by: FalconFour on Jun 05, 2011, 08:41 am

Title: Musical Relays (relay sequencer)
Post by: FalconFour on Jun 05, 2011, 08:41 am
I got bored.


http://www.youtube.com/watch?v=kbwwbK1o5n4

This was also kinda cool to play around with my new i2c LCD backpack from adafruit (seen on the breadboard, driving the LCD), as well as my modifications to the i2c LED library to exponentially improve performance by bursting full commands to the LCD instead of bit-banging each bit. With all respect to ladyada and related parties, that's a *really* novice way to interface with the LCD over i2c, I'd really love to know what the reasoning was there... but with the modified library, animation even moves pretty smooth on the i2c LCD ;)
(also not sure if/how I should share those mods either... the code is exactly compatible with the original, just infinitely faster. also, none of this is necessary in the code below, which is tweaked back to standard LiquidCrystal.)
Title: Re: Musical Relays (relay sequencer)
Post by: tastewar on Jun 06, 2011, 04:29 am
Try posting on their forums -- they seem generally to be genuinely open to improvements.
Title: Re: Musical Relays (relay sequencer)
Post by: liuzengqiang on Jun 08, 2011, 04:57 am
Wow! When I was a grad student I used a relay board to save money on digital multimeter. The clicking was every 3 seconds. I dreaded sitting next to the computer. I should have gotten what you did and made the click more musical! I hope there's something that makes puff sound like what you would do with mouth  :smiley-mr-green: