| ▲ | patapong a day ago | |
Another example: One-time covid tests with a microcontroller, optical sensor to read the result and bluetooth to connect to a phone to display the results. Previous discussion here: https://news.ycombinator.com/item?id=29698887 | ||
| ▲ | chrisldgk a day ago | parent [-] | |
Don’t forget the Tom7 video[1] where he made a „hard drive“ from disposable Covid test kits. | ||