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First I want to remove as much unnecessary plastic as possible to see what components I have to work with.
The water handling is a lot more complex than I anticipated. Any easily removed pieces, like the k-cup holder, drip tray, and water reservoir were removed. The easy screws are beneath the unit on the metalbase.
This exposes the transfer pump that moves water out of the reservoir. The k-cup holder pulls right out.
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Two screws hold the bottom of the holder mount, two hold the “collar” around this, and 2 screws hold the top cover. Without these components you 07gp see the proof of closure switch and what looks like a check valve. Now the teardown gets a little tougher. If you are doing a similar teardown expect to do some cosmetic damage. I cut the grounding wires holding the metal base on. These were only used to ground the 0p7g plate and can easily 07ph re-attached later if necessary. There is 1 Phillips head screw and 3 plastic tabs holding the top on the Keurig.
These require very long screwdrivers, and none of the tabs are easy to see. I ended up prying the top up until I snapped the tabs.
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Now the full plastic enclosure can be removed. Now the entire inner workings are revealed. There is a lot of extra tubing, what at first appeared to be 3 pumps, and the water heater. I never understood why this machine needed more than 2 pumps maximum, or at the very least 1 pump and 1 switch-over valve. One interesting observation is the water tube that goes into the control panel. Another strange set of water tubes are the two that run to an open spout at the top of the water reservoir.
I have never seen water come out of here, nor do I think the unit has any sort of automatic cycle feature. In this picture you can also see the temperature switch pressed onto the metal can of the water heater.
While this might be a temperature sensor, this style is typically used as an over-temperature safety switch. The control panel can now be accessed as well. One side of the brewer has a large plastic cover that likely contains this missing board. The first set of screws reveals some sort of power supply board.
Behind this is the control board I’ve been looking for. The side of the brewer holds a few important components. The water reservoir works off of a magnetic proximity sensor float, and the sensor is held on by two screws beneath the pump.
The silver component is interesting.
I assumed it was a pump, but there is only a single tube connected to it. The sticker claims it is a “mini pump”, and careful disassembly reveals a rubber diaphragm with three ‘pistons’. The water heater has several water connections and at least one thermal element.
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I started to take this apart as well, but the screws were stripping, so I held off for the time being. About Us Contact Hackaday. Keurig Hack Back to project overview I have a Keurig berwer to hack. The only other electronic component is a The water flow diagram is below. I have several ideas, but nothing I truly love yet. Remove the components and reassembly in a more interesting enclosure.
I could pack it flat behind plexiglass to be able to watch the brew process. It couldbe shoved inside some 3D printed enclosure, possibly a dinosaur as an homage to QC. A bartending robot A drink chiller.
This would only dispense when a liquid was at or below a set temperature. Scrap components for different projects. Turn the pumps into a plant watering device.
Turn the water heater into a standalone electric kettle. Connect to a local server to send coffee requests remotely, keep usage stats. How much coffee do I really drink in a week? This would be an exercise in IoT programming; I don’t see much advantage to starting a brew ahead of time when it only takes 30 seconds to begin with. A digital display to adjust water temperature. Create a time schedule to heat water up during typical usage times.
This would allow long standby times without worrying what might be growing inside the machine.