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RE: IR LED product versions based on the new IR:6 technology to boost performance in security and biometrics applications

bidrohini — Thu, 19 Dec 2024 14:11:55 GMT

The new IR:6 thin-film chip technology from OSRAM represents a significant step forward in infrared LED performance.

RE: IR LED product versions based on the new IR:6 technology to boost performance in security and biometrics applications

DAB — Sun, 15 Dec 2024 20:38:27 GMT

Interesting technology.

RE: Engineer-to-engineer: understanding time-of-flight sensing

shabaz — Wed, 11 Dec 2024 02:58:42 GMT

I finally wrote up the detail regarding a Pi Pico implementation of a TMF8828 board, and some source code, here: [mention:e2230f2c0eff40eb8c23af79001c4b41:f7d226abd59f475c9d224a79e3f0ec07]

RE: Leveraging multispectral sensing to reduce food waste: ams OSRAM’s photonic innovation

shabaz — Sun, 08 Dec 2024 19:06:50 GMT

Another interesting part! Worth a RoadTest, if ams/OSRAM and element14 are interested in that?

Thank you for the blogs.. it's great to see all these interesting ams/OSRAM products and use-cases that have been revealed so far.

RE: Leveraging multispectral sensing to reduce food waste: ams OSRAM’s photonic innovation

DAB — Tue, 03 Dec 2024 21:25:15 GMT

Cool sensor.

RE: Leveraging multispectral sensing to reduce food waste: ams OSRAM’s photonic innovation

bidrohini — Tue, 03 Dec 2024 10:36:36 GMT

Is the AS7341-DLGT sensor compatible with Arduino?

RE: How ingenuity and expertise led to the development of our multi-pixel LED

DAB — Tue, 26 Nov 2024 20:55:29 GMT

Nice solution, put the light where it is needed.

RE: How ingenuity and expertise led to the development of our multi-pixel LED

beacon_dave — Mon, 25 Nov 2024 17:09:26 GMT

Some of the above links look like they may need updating.

Gen2 product (25,600-pixel):
https://ams-osram.com/products/leds/white-leds/osram-eviyos-hd-25-gen2-kew-gbbmd2u

RE: How ingenuity and expertise led to the development of our multi-pixel LED

shabaz — Mon, 25 Nov 2024 16:18:03 GMT

Very interesting article!

RE: How ingenuity and expertise led to the development of our multi-pixel LED

dougw — Mon, 25 Nov 2024 15:05:07 GMT

Remarkable technology - wow!

RE: Future of vital sign monitoring: ams OSRAM’s latest developments

dougw — Mon, 30 Sep 2024 13:55:15 GMT

Nice to see the latest progress...

RE: Engineer-to-engineer: understanding time-of-flight sensing

shabaz — Fri, 27 Sep 2024 04:42:28 GMT

I think the PCB works. I ported source code to the Pi Pico. It is in my TMF8828 GitHub repo, in the tmf8828_experiment_board folder.

I made the mistake of trying to port someone else's code, who had ported it to a Renesas chip, from the original Arduino library provided on the ams/Osram website. Whoever had done the port, had done it badly; they'd shoved all source code into a load of header files! So I had to split it out into something normal. I should have just started from the original Arduino library.

Anyway, when run, I do see responses from the sensor, as a stream of values, and they change depending on if there's something placed in front of the sensor or not. I still need to figure out why a lot of the values are zero though. Also, this is without a window in front of the sensor, it's bare currently, so it won't be behaving correctly (as I understand, the window may be vital, because I believe it provides an amount of 'crosstalk', and that is required for the time-of-flight to be calculated). I'm not 100% certain yet; perhaps sufficient crosstalk is present even without the window. It needs to be a certain amount, not too high, not too low.

There's supposed to be a calibration routine to run too. I need to figure these things out still. However, at least the board is functioning, and the code is doing something!

Example output dumped over the USB UART:

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RE: Engineer-to-engineer: understanding time-of-flight sensing

shabaz — Wed, 25 Sep 2024 20:44:14 GMT

I think I don't have enough solder on the pads, I was hoping that there would be so that a side-view could reveal if it were soldered correctly. It's too close to the board, I can't see anything. However, while the solder was being reflown with the hot-air tool, the part did bob down and up when pushed with tweezers from the top. But that's only a 75% guarantee that all the pads are connected! I'll only reattempt reflowing if it doesn't function, since it was already a risk getting flux into the windows. I've got two layers of tape on the top, but when wiping off the flux from the board, there's a chance some could still seep through.

The part is well-centered though. I always place a silkscreen outline to help with visual alignment.

The rest of the parts will be hand-soldered with an iron.

RE: Engineer-to-engineer: understanding time-of-flight sensing

shabaz — Wed, 25 Sep 2024 17:51:10 GMT

I knew it was going to be small, but seeing it in person shows just how small! I think I'm going to apply Kapton tape to the top before using the hot-air tool.

Quite an intricate part. In the photos below, the laser is on the left side, and the darker, blue-tinted right side contains the lens covering the sensor, i.e. the SPAD (single-photon avalanche diode) array.

My PCB Gerber/CAD files are on GitHub in case anyone else wants to give it a go too (no guarantees, the PCB could have faults).

RE: Engineer-to-engineer: understanding time-of-flight sensing

rsc — Tue, 17 Sep 2024 12:46:28 GMT

I'm using some SEN0381 sensors from DFROBOT (DigiKey

1738-SEN0381-ND) that work very well. I'm not sure what's inside.