This is a code intended to control a Colormaq Washing Machine 11 Kg with an arduino uno.
The mainboard of my washing machine fried after a electrical surge. I
discovered that the TRIACs were still working, so I made a board that could
fire their triggers using an Arduino. The schematic is provided in the file
wash_machine.sch.
The messages in the 20x4 LCD display are written in Portuguese, but the comments and the serial messages are all in English.
Six modes are available:
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Simple Wash: The most basic washing process, it is depicted in Figure 1
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Normal Wash: Repeat the whole "Simple Wash" process three times, where only the first "wait step" of the first "Simple Wash" process will be 15 min instead of 5 min.
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Delicate wash: Same as the Normal Wash, but the interval between two alternate shaft rotations is increased.
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Double Wash: Repeat "Simple Wash" two times.
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Just Centrifuge: Only performs centrifugation.
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Just Soak: Fill the tank and end the process.
Figure 1: "Simple Wash" flowchart
After finish the selected mode, the machine will emit a beep. If the tank takes too long to fill, the machine will display an error on the LCD screen, beep for a few seconds and stay on hold.
The machine displays a time estimation of the wash cycle, but it is imprecise. I think it should be improved with a hardware clock module.
As interface, the project uses a 20x4 LCD to display the menu, a select button and a start button. There are also serial messages for debug purposes.