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A project log for 256 Channel Firework Controller

Use two cheap 16-relay boards to multiplex and remotely control up to 256 channels of firey madness

Aleks ClarkAleks Clark 07/01/2015 at 10:350 Comments

Well, small update cause the 4th is nearly upon us. Took the board outside, and it decided not to work. Yay. The problem seems to be on the i2c bus and/or the power/ground lines. I will either need to slow it down ( http://arduino-pi.blogspot.com/2014/03/speeding-up-i2c-bus-on-raspberry-pi-and.html ) or add additional pullups on the power lines. Unsure why it started failing all of the sudden, unless the humid air outside added capacitance somehow.

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