Hack Correlation

I will probably have to split this article into several parts, as I move along. In the initial article (see  http://hackcorrelation.blogspot.de/2017/01/ionik-cloud-hub.html ) I took a look at the hardware and started doing some basic hacking. However, I quickly ran into limitations and decided to try and port OpenWRT for the platform. There are quite a few steps and preparations needed to do this, however, this is for documentary purposes only. You don't need to do any of the stuff below (except backup), you can just flash my OpenWRT firmware and be none the wiser. However it might be useful if you want to port it to a new device, I could not find any tutorial about this. Step 0 - BACKUP In case everything blows up you will want to be able to restore everything to the factory condition. I first reset the root password to 'admin' by going to this link: http://10.10.10.254:8000/goform/SystemCommand?command=%2Fsbin%2Fchpasswd.sh+root+admin&SystemCommandSubmit=App...

Living close to a densely populated area means that it's hard to do consistent testing without spending a lot of fuel, which is also expensive. Nevertheless, I took the pen&paper approach and started working my way from the basics. I studied all the Bosch sensors from this page , used a bit of common sense and figured out that my sensor is a Bosch 0281002691, or similar, with a 180 MPa (26000 psi) nominal rating. This might be wrong but It's a good place to start. I've already used Torque and my multimeter to get some data and it seems to fit with the sensor I've chosen. It might be wrong, but so far it clicks into place. Using the data I've gathered I've created a simple JS page that shows some logs and tries to simulate what my module (and sensor) does: https://jsbin.com/goyavabuju/edit?html,output (Note that this is the HTML/JS result after I did the interpolation.) So the basic function is: the ECU commands the pump, this delivers a pressure...

My old post on the Saeco Talea Giro machine teardown  (including deprecated one ) has had tremendous success and I frequently get questions on how to fix this or that. I am no specialist on this stuff but I've managed to keep my unit running after it was used in an office environment (>50000 coffees). So for me it's mostly guesswork and some logic, but I'll display this so that you can help figure out the problem with your own unit. I'll try to make this accessible to non-technical people, let me know if some idioms are too advanced. I will try to update this guide with usual questions, but this is not a replacement for professional servicing. Before troubleshooting  make sure that the unit is  cleaned and descaled  and has enough water. Use the manual for this, each unit is different. Also, try turn the unit off and on, perhaps leaving it 1h undisturbed. This works around some of the bugs in software (firmware). Learn the sounds of the machine and try t...