Login

I've been reading about food trends 2025 and some sound interesting while others seem like passing fads. What food trends 2025 are you actually excited to incorporate into your cooking?

I'm interested in both ingredients and techniques - things that might become part of our regular home cooking ideas. Also curious about seasonal recipes that align with these trends. What do you think will be the most lasting food trends 2025?

I’ve been prototyping a small device that uses a single photon avalanche diode for low-light sensing, but I’m hitting a wall with the signal-to-noise ratio in practical, non-lab conditions. Has anyone else tried to move this kind of setup out of a controlled environment? I can’t tell if my issue is with the quenching circuit design or if I’m just asking too much from the component without a full cryogenic setup.

I did some field tests with a SPAD in a little enclosure outside the lab. Temperature swings, power supply ripple, and ambient light pulled my dark counts up and wrecked the SNR pretty quickly. Even when I kept it under a hood, the afterpulsing and timing jitter felt worse than in bench tests.

My hunch says the quenching circuit is the choke point. I went from a passive pull-up to a fast active quench and saw the recovery time shrink, but the noise floor barely moved. The parasitics and detector capacitance charging currents were eating the margin.

I keep wondering if the real issue is the whole premise in non lab light levels. You can do measurements that look good on paper, but when a street light flickers or a car passes by, the signal just disappears.

I added a narrowband filter and a small aperture, plus a light trap to cut stray light. It bought me a bit of margin in specific scenes, but it didn’t fix the core SNR problem under real world noise.

I tried a quick alignment check and a slightly different optical coupling; the improvement was tiny and only under controlled swings. In practice, drift made it worse after a few hours.

What exact metric did you use for SNR, and over what integration time?

Login
Username:
Password:	Lost Password?
	Remember me