02/28/2022 at 18:35 •
In this world-political gloom, I do have a bit of good news to announce:
Our paper on the glove has finally been published after months of writing, correcting and adapting. Like the whole project, the paper is freely available.
01/31/2022 at 16:29 •
In addition to my Master's degree, I have been able to complete a lot in the last few weeks:
- Uploaded software & hardware repo to GitHub with latest code, pcb files, instructions and a lot of docu on the project
- Uploaded some exemplary videos from the aforementioned study that I did last summer
- Wrote and submitted a 30 pages scientific paper for the MDPI – Sensors Journal, which is currently under review. Most probably it will be published in February!
- Updated this hackaday site with new pictures, instructions and info. Still, most files are now hosted on GitHub.
Very happy to reach this point after four years in this project. I will keep you posted, when the paper is out!
10/14/2021 at 14:58 •
Sorry for the big gaps in the project log. There is just too little time to document everything while working.
So since the last post, there has been a second revision of my PCB. I changed some small things and added LEDs and a MEMS (gyroscope, accelerometer and magnetometer – to be able to turn of all motors when glove is not in regular position). It all worked out quite well, and just in time for the trial I had all 4 prototypes (2 sizes, one spare glove each) ready. You can have a look at the photos for details for now. Of course, I will upload material, blueprints and code as soon as I had time to put everything in order, probably in February when the thesis is finished.
So after finishing the prototypes I was able to successfully conduct the study in August and September without any technical problems or other issues. I also attached some pictures from the study – thanks for the photos to Kjell Wistoff.
Right now I am doing the transcription and analysis of the data gathered. In the next few months, I will write my master's thesis and submit it at the end of January. The thesis will be open access and therefore be uploaded as well. A paper on the study is also planned to be published. More on this as soon as there is solid news.
So far for now...
05/25/2021 at 13:09 •
a short post, because it is quite busy around here...
I finished the first revision of my new module which now hosts:
- the ToF camera (pico flexx)
- a Raspberry Compute Module 4
- my new motor-driver and CM-carrier board.
Now you only need to plug in a battery pack via USB-C and off you go!
I will now test the unit to identify possible errors and pitfalls. Subsequently, I will carry out a pre-test with subjects, in which I want to gather first insights into the expected parameters in the obstacle course and concretize the preparation of the study...
03/19/2021 at 10:32 •
Sorry for letting pass so much time since the last update. But now there is even more exciting news to report:
I am very happy that now after some failed attempts at other institutes I am able to write my master thesis at the ZEISS Vision Science Lab (Ophthalmic Research Institute at the University Hospital Tübingen, Germany), from whom I also get a budget to conduct a small empirical study with 10-20 participants. Furthermore, as coincidence would have it, I was able to successfully apply for a grant to build the prototype tested in this study: The Kickstart @ TH Köln project (financed by federal funds) provides me with a budget to realize a revised version of the device. This way I can finally start to work through the list of shortcomings and get professional help for the trickier problems.
And no worries: the project stays open!
The last few months, during which I have not posted any updates, I have spent little time on the device itself and a lot on defining the study design (and learning the necessary statistical basics for it), writing proposals, and soliciting formal bids for procurements. This has been exhausting at times, which makes it all the more exciting that everything is now in place and I can begin the actual work.
So far for today. I will keep you posted when there is more to report!
08/17/2020 at 14:39 •
I just had the feeling, it is time for a new update on my project so that there is at least a post every few months. Because: the project is still running and I spend 1-2 days a week to push it further. Unfortunately there is not so much to show these days, as I am eagerly writing code on a complexity level way above my knowledge and skill set...
The main issue over the last weeks was to make the code more efficient (to save processing cycles and ultimately heat and battery usage...) and to let the calculations run concurrently. I therefore hat to rebuild and rewrite wide parts of my code which ended in quite a mess sometimes. However, I am nearly done now and I promise to push commits more frequently when the structure once has an acceptable form...
Just some benchmark data:
The whole processing of a depth frame now only takes about 3ms.
The process of writing the values to the motor drivers takes about 5ms.
I can now easily reach the full 45fps on a Rpi4 OR let the cpu sleep for about 80% of the time if I use 25fps...
The total latency is now at ~30ms – perfect for multisensory integration.
I will keep you updated!
stay save and healthy...
04/27/2020 at 21:43 •
Hey folks. This is just a very short update to keep you in the loop:
I am still working on this project – du to covid I do have even more time to put into the project. But at the same time I need to get the scientific part of my MA thesis done. Therefore I am eagerly reading literature and papers around the topic and preparing a little study with the device that hopefully takes place end of the year or so... No one knows how long this virus will take.
For this I am preparing an app, that is remotely connected to the Raspi via UDP over Wifi, which allows me to see all the data, settings, bugs etc. This was an important step for me to boost the debugging process and to be able to support people with their first contact with the device (as I can see, what they "see" or feel...). So here is a small Screenshot to show you my work in progress... I am pretty happy about this already as the connection is stable at 25fps :-)
01/27/2020 at 18:17 •
I am writing a short update on the project as there was no movement on a content but on a administrative level: I applied for a research fund (consisting of 10k €) and made it to the final round. Unfortunately I got declined so I again have to look for some more money to realize a empirical study about the device. mmmmh, could crowd funding work?
The good thing is: a lot of theoretical work is now already done due to the application and I still can use it for my MA thesis..
I will keep you updated!
11/17/2019 at 11:50 •
The Hackaday Prize winners are out! And Unfolding Space won an honorable mention for "Best Concept".
Once more I can express my admiration for the high level of quality and elaboration of the finalists' projects. I am super happy and I really feel "honored" (haha) to be among this year's winners.
I definitely know where to spend money on and I am very happy to have this opportunity and privilege to continue to work on something that exciting and demanding at the same time.
Thank for your support and also thanks to Supplyframe and the other Sponsors to make this happen.
11/09/2019 at 18:42 •
I invested some time to make my files, schematics and instructions clearer. You can see the updated picture all over the page. Comment, if you spotted a mistake! This is my new general schematic (would you call it the same? Don't know if it is the right term...)