Reef Angel Forum

rimai wrote:1. No
2. 2nd Gen relay boxes have a usb like connector on the side of the box that you can use to connect one expansion module or the expansion hub.
3. All expansion modules can be plugged into the hub. Currently there are Relay, PWM and I/O expansion modules. Some are only on special order basis for now.
4. The PWM expansion module is a little tiny box with 6 boosted independent PWM channels. It has another 328p inside of it working as a slave. You can communicate with it through I2C. I decided to make it with another 328p in slave mode to take the load of lighting effects off of the master head unit.
So, it is very simple to call any effect that you may want or even change effects if one would like to.
Attached is the PDE file that is loaded into the PWM expansion module.
One could actually very easily turn it into a stand-alone 6 channel PWM controller, by just modifying the code.
To call the effects on the module, you can issue the following commands:

Change individual channel, where x is a number from 0 to 5, which represent which channel you would like to change and y is the a number from 0 to 255, which represent the PWM duty cycle.

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PWMExpansion(x,y);

For Fast Cloud

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PWMExpansion(6,1);

For Slow Cloud

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PWMExpansion(6,15);

For Thunderstorm 1 (preset pattern)

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PWMExpansion(7,0);

For Thunderstorm 2 (random pattern)

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PWMExpansion(8,0);