tag:blogger.com,1999:blog-6053337542597571017.post8495014745664874182..comments2024-03-29T13:35:26.577+01:00Comments on Hack Correlation: Senseo custom firmware - updateLigiushttp://www.blogger.com/profile/04631687424641789584noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6053337542597571017.post-33819287088854833172014-03-24T14:29:06.544+01:002014-03-24T14:29:06.544+01:00Hi,
The project was finished but never put into ...Hi,<br /> <br />The project was finished but never put into actual use because I'm worried about the lack of isolation from mains voltage. Basically everything is floating at main voltage +/-3V which makes it very dangerous with water and hot pressure around :)<br />That being said, I did test it thoroughly on the breadboard (except the HV part) and corrected some issues, I will put the source code up on some public repository.<br /> <br />Most of the automated coffee machines do the procedure you have described above, however I believe for a different reason: by first 'wetting' the coffee it makes it stick better to itself (cohesion) and when running pressured steam through it it will not go through the holes so easily as dry coffee would go.<br />Without doing this the ground coffee would either:<br />a) go through the filtering holes into the cup<br />b) clog the filtering holes<br />However it's just a hunch.<br /> <br />I still want to complete this firmware sometime and test it on a spare machine I have laying around. I would however like to rewrite everything using interrupt-based time-sharing techniques (sort of multi-tasking, but not like it is done now) and add some safety features.<br /> <br />The problem is that the MSP430 does not start reliably when presented with a slow-rising voltage supply which might cause the outputs to come up in a random state. This might mean that if the power goes out for a second the heating element might be stuck in the on position (->overheat->pressure release valve or explosion) or the pump (emptying all the water on the floor and then burning the pump motor because of dry running).<br /> <br />Designing an industrial/consumer product is not easy :)Ligiushttps://www.blogger.com/profile/04631687424641789584noreply@blogger.comtag:blogger.com,1999:blog-6053337542597571017.post-42876739575916898922014-03-24T11:20:53.798+01:002014-03-24T11:20:53.798+01:00Hey, whats up with you're senseo project? ;)
...Hey, whats up with you're senseo project? ;)<br /><br />Another importand feature is the swelling-feature. If you'll make an espresso you do can do it like this:<br />-turn on the pump until a little bit of water comes into contact with your coffee pad<br />-turn of the pump and wait 5 seconds<br />-turn on the pump and finish you're coffee.<br />The aim of this procedure is that the coffee pad is swell up. Just had a try on it :)<br /><br />Sorry; my english is a little bit rusty... Anonymoushttps://www.blogger.com/profile/17922543743210865421noreply@blogger.com