2 ms·
I wonder which IR proximity sensor they used. I'm currently using the OSRAM SFH7773 in my projects — it's the cheapest one I could find, but it is still quite e
by jwr 13y ago
I wonder which IR proximity sensor they used. I'm currently using the OSRAM SFH7773 in my projects — it's the cheapest one I could find, but it is still quite expensive ($1.20 at qty 25 from RS/Allied). They are using 64 of them.
I also wonder how they deal with interference. Each sensor emits IR pulses and measures the light that bounced back. On the SFH7773 at least, there is no way to synchronize the pulses to an external source. Which means you will get light bleeding inbetween sensors.
Sadly, the publication is not (yet) available.
On a side note: I noticed that ETH Zurich seems to be doing a lot of groundbreaking work recently in electronics and robotics related fields.
- sspiff 13y agoSince it's a prototype, I don't think costs (in the range of 64*$1.2) are any kind of problem.
- andrewfelix 13y agoI would have thought a single camera would achieve better fidelity than 64 proximity sensors.
- pbhjpbhj 13y agoWhere would you put the single camera to have a view of the fingers of both hands whilst on the keys? The 64 sensors are acting as a single camera I imagine [yeah sorry didn't RTFA].