Task:
- Complete your final project tracking your progress.
Time management
Before I started the final project, I watched the Fab Academy videos from 2020 and got an idea of the scope. After that, I sketched out a rough plan for myself and how much time I would need per part.
Unfortunately, my plan didn't work out. Due to the Corona pandemic and childcare restrictions, I was unable to keep to my schedule. I decided to continue step by step as I could. My priority subjects were code and hardware (electronics) since I had the least experience in these subjects.
What tasks have been completed, and what tasks remain?
I was able to finish the following parts for the help button and help hub: the code, two (working) assembled boards including display and RF modules and the corresponding enclosures. I still added the labeling design to the case design.
If I had had more time, I would have liked to do the packaging (cardboard box and storage) as a kit for the system.
What's working? what's not?
The three main components (code, hardware and enclosure) fit together and work. The system can transmit data via RF, send an email, and inform with output devices (display and LEDs) if everything worked.
During the first tests, the transmission sometimes did not work. I could find out that a contact from the battery holder was loose. I was able to fix the problem.
The first tests without antenna did not work at all. The modules had to be right next to each other. The modules with antenna worked reliably. Then the housing was adapted for the antenna.
What questions need to be resolved?
It is the first prototype, during the development I had these optimization points:
- better RF communication by using better modules, e.g. with this superheterodyne receiver. Adaptation of the board connections (pinheads) is necessary.
- Use of better antennas for more range and integration on the board and in the case design.
- Reduce size and height of boards and enclosures.
What will happen when?
Next, I would like to optimize the boards and the code. For this I am thinking of a cooperation with other Fab Academy participants or alumni (experts). As a result of the optimization I hope to be able to reduce the total cost.
Afterwards I would like to send some help! Button kits to my grandma-in-law in Germany and my family in Peru.
It would be interesting to test other materials (wood?) or processes to improve the haptic.
What have you learned?
I learned a lot during this time, both professionally and personally. The Fab Academy is a great experience that I would recommend to others.
I also learned that system integration is not a linear development and deepened my skills. Mainly I made a big progress in code and electronics. Now I really enjoy tinkering with circuit boards. I have improved my knowledge in the processes at the Fab Lab machines.
I realized that I like to teach others what I learned and would like to try a year as an instructor. Guideline: Don't give up! With motivation, patience and curiosity it works... and otherwise ask. :)