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This week we finished the Android App Ynfra and the corresponding Raspberry component Ynfra rpi so that we were able to control an LED strip using an Android app. Furthermore we started mirroring our projects to GitHub.
Interoberlin geht ein Licht auf. In dieser Session haben wir die App Ynfra und die Rasperry Komponente Ynfra rpi soweit fertiggestellt, dass wir den Infrarot Empfänger eines LED Bandes per App ansteuern konnten.
Nebenbei haben wir drei unserer Android Projekte auf Github gespiegelt.
Having already too many projects at the same time we started a new one today. Like in our project Bolyde we want to realize a remote control. This time we want to control an LED strip which normally works with a infra-red remote. Also this time there will be a Raspberry involved.
Gotcha! This session we managed to control throttle and steering of our model boat via our Android app.
Let’s start at the beginning: We went to a model shop in Berlin Mitte in order to buy a new remote control. All other parts of the boat’s electronic were still working more or less. We decided to get a minimum equipment in order to get the whole thing work from end-to-end without paying too much.
We opened the remote control we bought and measured the different electric potentials which were applied when the throttle was triggered or the steering wheel was turned. Afterwards we disconnected the original control triggers and steering wheel from the mainboard and soldered two different cables on it that were then connected with Raspberry Pi’s I/O pins.
After putting some effort in configuration we could watch first results: propeller as well as the rudder reacted on input of the Androd app! We still have to fight some latency issues but we hope we can get it ready for a first trial next week.
We are planning to achieve a simple communication between an Android device and a Raspberry Pi. At the end of the day we managed to send an HTTP GET from our Android phone which contain accelerometer values to the Raspberry which then outputs the values on.
Until next week we want to improve the scalabilty and the user interface of our app.
During this session we worked on communication between an Android app and a Raspberry Pi. We are planning to send data from the acceleration sensor of a mobile device to Raspberry Pi in order to use it for remote controlling a model boat. The first steps are done. Until next Thursday we plan to add more configuration features to the app. Furthermore we want to put some basic communication output on Raspberry e.g. some LEDs to see if the values are transmitted correctly.
Update: In order to speed up our deployment processes we started to include a C++ cross compiler in our continuous integration system Jenkins so that we can compile binaries for Raspbian on our debian server.