Definitely one I will be watching.we'll see if this one does better than the deepblu/watoom
Atmos MissionOne Dive Computer Black-Black
Make the dive simple. 探索海洋就是這麼簡單
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Definitely one I will be watching.we'll see if this one does better than the deepblu/watoom
Atmos MissionOne Dive Computer Black-Black
Make the dive simple. 探索海洋就是這麼簡單
Ah, thanks for the clarification. I don't have a response as I want to think about it. I wish I had more insight to how the Perdix operates, as the battery consumption is simply amazing. I'm curious as to what Shearwater does in recreational mode.
It's pretty darn amazing compared to the Aeris A300 CS that I used to have! lol.They're running Buhlmann's formula in a loop I'm sure. You can get clever and do a binary search instead of simple-stupid adding one minute every time, increase recalculation interval and probably come up with some other juice-saving tricks too. But it's a backlit dot-matrix screen with the GPU and so on, so its "amazing" doesn't compare with 2 years on a CR24xx anyway.
But given the time that I don't have to recharge the batteries on my Perdixes (Perdices?), it is more than good enough. If I have to charge my DC more often than my dive lights, then Houston, we've got a problem.
Ken,You don’t need anything like a GPU to drive a dot matrix display. 10 years ago when I was building stuff with displays the display itself could have a framestore addressed by tiny messages saying ‘write these bytes here’ . This was all about power consumption for very small phones. All it has to do is clock a few 10k bytes out 60 times a second, often you can get away with slower than that, and so even less power.
cpu wise you are looking at the odd few hundred multiply and adds per iteration, then dozens of compares. This processor is 32mhz, a bit tight on flash but $1 10k off, uses 49uA/MHz so 1.6mA flat out. STM32L0 Series - STMicroelectronics
But mostly it would be asleep using 100s nA. The display and pressure sensor would dominate the power draw. Some of this family has direct drive for small screens, no glue required.
When I was having my head electronics replaced recently I got to see the inside of a variety of high end computers in for repair, they were using older versions of the same family. The OSTC Buhlmann implementation was for a small 8 bit processor.
Wow, from the owner's manual, looks like you can custom set GF high and GF low. That would be a real breakthrough, if true. Keep in mind this is another South Korean offering. Maybe they got it right?
Still only the odd 100uA. The cpu and display driver will be less that the led that tells you the thing is on. The real consumer is the screen backlight and maybe the pressure sensor. This is why Zoops etc all go for years on one coin cell.@KenGordon: you don't need an Nvidia-level GPU to drive a display, but you need the chips to translate what you write to your framebuffer to the actual lit-up pixels. As opposed to just "turn this LCD segment black" from the bad old days. And all of that takes juice.